Manufacturer since 2009 · Tongling, Anhui ISO certified Licensed for hazardous & precursor chemicals
[email protected] · +86 186 5620 1888
Eapearl Chemical

Iron oxide red

Iron oxide red

CAS 1309-37-1 EC 215-168-2 Fe2O3 Powder SDS published CLP Danger

⚠️ Note: This safety data sheet is provided in English; a localized version is being prepared.

MolGod_SDSCARD_1
REACH 2020/878
v2 · 08.09.2026

Specification

Product NameIron oxide red
Other NamesIron oxide red
CAS No.1309-37-1
EINECS No.215-168-2
MFFe2O3
Molecular weight159.69
Purity95%
AppearanceOrange-red to purplish-red cubic crystal powder
Density5.24 g/cm³
Melting point1565 °C
solublenessinsoluble in water
flash (ing) point~110°C

Values are typical for the standard grade. Tighter specifications are available — state the target in your inquiry and we confirm against the production batch.

Hazard classification

GHS pictogram GHS05 — Corrosive GHS pictogram GHS07 — Irritant / harmful GHS pictogram GHS08 — Health hazard GHS pictogram GHS09 — Hazardous to the environment

Danger

Classification source — PubChem C&L (consensus filter, not harmonised)

No harmonised entry exists for this substance; the classification shown is the supplier consensus reported to ECHA and should be confirmed for your intended use.

  • H370 Causes damage to organs
  • H372 Causes damage to organs through prolonged or repeated exposure
  • H315 Causes skin irritation
  • H318 Causes serious eye damage
  • H335 May cause respiratory irritation
Precautionary statements (2)
  • P264 Wash thoroughly after handling
  • P260 Do not breathe dust/fume/gas/mist/vapours/spray

Substance identity verified against the registry entry on 2026-09-02.

Packaging and shipping

Dag25kg
IBC Dag25kg
ISO tank (20ft)24–26 m³
ISO tank (40ft)48–50 m³
Iron oxide red
Iron oxide red
Iron oxide red
Iron oxide red

Iron oxide red, with the chemical name of iron(II,III) oxide, is a long-standing and highly performing red inorganic pigment. Due to its extremely high chemical stability, excellent light and weather resistance, strong covering power and tinting strength, as well as its non-toxic and environmentally friendly properties, it has become an indispensable core material for durability coloring in numerous industrial fields such as building materials, coatings, plastics, rubber, ceramics, etc. We are committed to providing stable product quality and professional technical support to help customers enhance the appearance value and long-term durability of their products.

Iron oxide red (iron red) - The entire series of factories provide support for applications such as building material coloring, industrial coatings, plastics and rubber, and artistic pigments.Iron oxide red (iron red) - The entire series of factories provide support for applications such as building material coloring, industrial coatings, plastics and rubber, and artistic pigments.Iron oxide red (iron red) - The entire series of factories provide support for applications such as building material coloring, industrial coatings, plastics and rubber, and artistic pigments.

Iron oxide red (iron red) - The entire series of factories provide support for applications such as building material coloring, industrial coatings, plastics and rubber, and artistic pigments.

Product Description

Anhui Eapearl Chemical Co., Ltd. As a professional supplier of inorganic pigments and chemicals, relying on a mature supply chain network and strict quality control, we provide customers with high-performance and multi-specification iron oxide red product series and coloring solutions. Iron oxide red, with the chemical name of ferric oxide, is a red inorganic pigment with a long history and excellent performance. Due to its extremely high chemical stability, excellent light and weather resistance, strong covering power and coloring power, as well as non-toxic and environmentally friendly characteristics, it has become an indispensable core material for durability coloring in many industrial fields such as building materials, coatings, plastics, rubber, ceramics, etc. We are committed to providing stable product quality and professional technical support to help customers enhance the appearance value and long-term durability of their products.

Core Characteristics and Application Value

The wide application of iron oxide red stems from its unique advantages as an inorganic pigment, providing a durable guarantee for “red-based” modern industries:

Exceptional durability: Excellent light resistance, weather resistance, and high-temperature resistance. The color remains stable even under long-term exposure to the sun, wind, rain, and high temperatures, and it is not prone to flaking or fading, with a much longer service life than organic pigments.

Outstanding physical properties: It has extremely high covering power and excellent coloring ability. A small amount of addition can achieve a full and uniform red effect, and it can effectively shield ultraviolet rays to protect the substrate.

Excellent chemical stability: Resistant to acids, alkalis, and solvents. The color remains stable in complex chemical environments and is suitable for demanding industrial environments. Safety and Environmental Protection: Non-toxic and odorless, safe for both human body and the environment, in compliance with various environmental protection regulations (such as EU REACH), it is an ideal alternative to some heavy metal pigments (such as lead chromate).

Iron oxide red (iron red) - The entire series of factories provide support for applications such as building material coloring, industrial coatings, plastics and rubber, and artistic pigments.

Iron oxide red (iron red) - The entire series of factories provide support for applications such as building material coloring, industrial coatings, plastics and rubber, and artistic pigments.

Delivery&Payment method

Iron oxide red (iron red) - The entire series of factories provide support for applications such as building material coloring, industrial coatings, plastics and rubber, and artistic pigments.

Frequently asked

In what packaging is Iron oxide red shipped?

Standard formats are Dag (25kg), IBC Dag (25kg), ISO tank (20ft) (24–26 m³), ISO tank (40ft) (48–50 m³). Other packaging can be arranged for full-container orders.

Is a safety data sheet available for Iron oxide red?

Yes. A full safety data sheet for CAS 1309-37-1 is published and linked from this page; a signed copy is issued with the shipping documents.

What purity do you supply?

The standard grade is 95%. Tighter specifications are confirmed against the production batch before shipment.

Related products

🧬 3D-molecuulvisualisator
Molecuul laden...
3D-model Iron oxide (Fe2O3), CAS 1309-37-1, molecuulformule Fe₂O₃, molaire massa 159.69 g/mol

Gegevens overgenomen uit regelgevende registers en vakliteratuur, met vermelding van bron en editie. Zij vervangen niet het veiligheidsinformatieblad van de leverancier. Velden zonder vastgelegde bron zijn als zodanig gemarkeerd.

📊 Fysisch-chemische gegevens — CAS 1309-37-1MolGod_PROPHUB_MAIN
📊 Fysisch-chemische eigenschappen

Snel overzicht

Formule: Fe₂O₃
MW: 159.69 g/mol
CAS: 1309-37-1
🔬 Geavanceerde eigenschappen

Chemische identificatoren

SMILES: O=[Fe]O[Fe]=O

Laatst bijgewerkt: niet bevestigd

Chemisch overzicht: Iron oxide (Fe2O3)MolGod_OVERVIEW_1
MolecuulformuleFe₂O₃[1]
Molecuulmassa159.69 g/mol[1]
Smeltpunt1539 °C[1]
Dichtheid5.25 g/cm³[1]
IUPAC-naamoxo(oxoferriooxy)iron[1]
SMILESO=[Fe]O[Fe]=O[1]
InChIKeyJEIPFZHSYJVQDO-UHFFFAOYSA-N[1]

Synoniemen: Iron trioxide · Iron oxide, red · iron(3+) oxide · iron (III) oxide · Anhydrous Ferric Oxide

Gegevensbronnen: PubChem (NLM/NIH)
Laatst bijgewerkt: 2026-09-21

📚 Wetenschappelijke referenties (Chicago Author-Date) (1 bronnen)
  1. PubChem. National Center for Biotechnology Information (NIH/NLM), chemical compound database. dotyczy: Molecuulformule · Molecuulmassa · Smeltpunt · Dichtheid · IUPAC-naam · SMILES · InChIKey

WETENSCHAPPELIJK ONDERZOEK

[1]PubMed2025
Lei M, Zhang R, Wang L et al.. (2025). "Nanoparticle-Mediated Regulation of Intracellular Ferric Ions to Induce Motor Neuron Differentiation for Spinal Cord Injury Repair.". ACS nano. https://doi.org/
📚 Wetenschappelijke referenties (Chicago Author-Date) 1 refs · 1 baz

MOLECULE Bibliografie per CAS (live uit 13+ databases)

Bronnen: db:pubmed (1)

  1. db:pubmed Lei M, Zhang R, Wang L et al.. (2025). "Nanoparticle-Mediated Regulation of Intracellular Ferric Ions to Induce Motor Neuron Differentiation for Spinal Cord Injury Repair.". ACS nano. https://doi.org/10.1021/acsnano.5c10725
Regelgevingsstatus van de stof
Deze stof is onderworpen aan reglementaire vereisten: beheer van gevaarlijke afvalstoffen (BDO-register). Details in de sectie "Regelgevingsstatus (REACH/ECHA/CLP)" en op de SDS. Regelgevingsinformatie — beperkt de aankoop in deze winkel niet.
🧮 StoichiometrierekenmachineMolGod_STOICH_1
🧪 Chemische gegevensMolGod_CHEMDATA_1
CAS-nummer
1309-37-1
Molecuulformule
Fe₂O₃
Molaire massa
159.69 g/mol
IUPAC-naam (EN)
oxo(oxoferriooxy)iron
SMILES
O=[Fe]O[Fe]=O
InChIKey
JEIPFZHSYJVQDO-UHFFFAOYSA-N
📡 Data sourcesMolGod_SOURCES_1

The data in this widget comes from the following verified scientific sources:

  • PubChem — National Center for Biotechnology Information (NCBI/NIH), USA
  • ChEMBL — European Bioinformatics Institute (EMBL-EBI), UK
  • NIST WebBook — National Institute of Standards and Technology, USA

Data is cached locally for speed — the widget also works offline.

⚗️ Physicochemical propertiesMolGod_PHYSTAB_2
Density
5.2500 g/cm³ @ 20°C

Source: PubChem, NIST WebBook. Last updated: date not confirmed

🔍 Externe identificatorenMolGod_EXTID_1
4 van 16 ID-systemen25%
DatabaseIdentificatorActies
CAS Registry Number1309-37-1Openen →
PubChem CID518696[1]Openen →
InChIKeyJEIPFZHSYJVQDO-UHFFFAOYSA-N[1]Openen →
SMILESO=[Fe]O[Fe]=O[1]

Bronnen: PubChem (NIH), Wikidata SPARQL, KEGG, ChEMBL (EBI), CompTox CTX (EPA).

📚 Wetenschappelijke referenties (Chicago Author-Date) (1 bronnen)
  1. PubChem. National Center for Biotechnology Information (NIH/NLM), chemical compound database. dotyczy: PubChem CID · InChIKey · SMILES
📡 Spectroscopie — CAS 1309-37-1MolGod_SPECHUB_MAIN
📊 Databases met spectroscopische spectra — inline-gegevens 8 bronnen MolGod_SPECDB_2

Spectra worden op aanvraag opgehaald uit 9 bronnen. Elk spectrum wordt opgeslagen in onze database — de volgende keer openen = geen enkele aanvraag naar de externe API. Download JCAMP-DX / CSV / PNG bij elk spectrum zonder te zoeken.

IR IR (Infrared) — NIST WebBook
Public domain (US Federal)
▶ Klik om het spectrum te laden
🔗 Bron
punten
📚 NIST Chemistry WebBook, SRD 69
MS (NIST) Mass Spectrum (EI) — NIST WebBook
Public domain (US Federal)
▶ Klik om het spectrum te laden
🔗 Bron
punten
📚 NIST Standard Reference Database 1A
UV-Vis UV/Visible Absorption — NIST WebBook
Public domain (US Federal)
▶ Klik om het spectrum te laden
🔗 Bron
punten
📚 NIST Chemistry WebBook, SRD 69
MS (MoNA) MoNA — MassBank of North America
CC-BY 4.0
▶ Klik om het spectrum te laden
🔗 Bron
punten
📚 MassBank of North America (UC Davis) DOI: 10.1002/jms.1777
IR/NMR/MS (SDBS) SDBS — Spectral Database for Organic Compounds (Japan AIST)
Free for non-commercial

Referentiebron — geen openbare API. Openen in een externe database:

🔗 IR/NMR/MS (SDBS) →
📚 SDBSWeb: https://sdbs.db.aist.go.jp (AIST, Japan)
JP Monograph Japanese Pharmacopoeia — Monographs
Reference only

Referentiebron — geen openbare API. Openen in een externe database:

🔗 JP Monograph →
📚 Japanese Pharmacopoeia 18th Edition (2021)
WHO INN WHO — International Nonproprietary Names
WHO Model Lists (free)

Referentiebron — geen openbare API. Openen in een externe database:

🔗 WHO INN →
📚 WHO INN Programme
DOAJ DOAJ — Directory of Open Access Journals
OA journal index (mixed)

Referentiebron — geen openbare API. Openen in een externe database:

🔗 DOAJ →
📚 DOAJ — doaj.org
🔬 Interactieve spectra (live — NIST / MoNA / NMRShiftDB / SDBS) (2)

Gegevens worden live opgehaald uit meerdere bronnen (priority-chain). JCAMP-DX / CSV / PNG beschikbaar om te downloaden onder elk spectrum. ⓘ Eén bron ★★☆☆☆

IR — Fourier-transform infrarood

IR — Fourier-transform infrarood wordt geladen…

MS — massaspectrometrie (EI 70eV)

MS — massaspectrometrie (EI 70eV) wordt geladen…

Structurele eigenschappenMolGod_STRUCT3D_1

Structurele gegevens worden geladen...

❓ Veelgestelde vragen (5)MolGod_FAQ_1
What is the melting point of 1309-37-1?
The melting point of 1309-37-1 is 1539.
Nuttig?
What is the density of 1309-37-1?
The density of 1309-37-1 is 5.25.
Nuttig?
What is 1309-37-1?
1309-37-1 (CAS 1309-37-1) is a chemical compound. The chemical data comes from PubChem (National Institutes of Health, USA).
Nuttig?
What is the CAS number of 1309-37-1?
The CAS number for 1309-37-1 is 1309-37-1. A CAS Registry Number is the standard identifier for a chemical substance in scientific literature and in trade.
Nuttig?
How should 1309-37-1 be stored?
1309-37-1 should be stored as its safety data sheet directs \— typically in a dry, cool, well-ventilated place, away from heat and from materials it is incompatible with.
Nuttig?
➕ Stel een vraag voor
Structuurbestanden downloadenMolGod_STRDL_1

Moleculaire structuurbestanden uit de PubChem-database (NIH). Compatibel met programma's: Avogadro, PyMOL, Jmol, ChemDraw.

Bron: PubChem, National Library of Medicine (NIH). CID: 518696

🔄 Omrekenaar voor concentratie-eenheden LIVE MolGod_UNITCONV_1

Voer de concentratie Iron oxide (Fe2O3) in een willekeurige eenheid in — de rest wordt automatisch berekend.

MW: 159.69 g/mol · IUPAC Gold Book ↗

⚗️ Conversieformules + citaten (per formule)
ConversieFormuleNauwkeurigheidBron
% (w/v) ↔ molarityc (mol/L) = (% × 10) / MW±0.5% rel. when density ≈ 1.0 g/mLIUPAC (2019)
millimolar ↔ molarc (mol/L) = mM × 10⁻³ExactCohen ER, Cvitaš T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor AJ (2007)
molarity (mol/L)c = n/V = (m/MW)/V±0.1% (depends on MW precision)IUPAC (2019)
parts per million (mg/L) ↔ molarityc (mol/L) = ppm / (1000 × MW); equivalently ppm = mg/L for dilute aqueous±1% (density-independent for dilute solutions)IUPAC (2019)
mg/mL ↔ molarityc (mol/L) = (mg/mL × 1000) / MW / 1000 = mg/mL / MW × 1±0.2%Cohen ER, Cvitaš T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor AJ (2007)
g/L ↔ molarityc (mol/L) = (g/L) / MW±0.1% (depends on MW precision)Cohen ER, Cvitaš T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor AJ (2007)
mmol/L ↔ molarityc (mol/L) = mmol/L × 10⁻³ExactCohen ER, Cvitaš T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor AJ (2007)
Celsius ↔ KelvinT(K) = t(°C) + 273.15±0.01 K (ITS-90 scale)BIPM (Bureau International des Poids et Mesures) (2019)
Celsius ↔ FahrenheitT(°F) = T(°C) × 9/5 + 32±0.1 °FThompson A, Taylor BN (2008)
density-corrected % ↔ molarityc (mol/L) = (%w/w × ρ × 10) / MW, ρ in g/mL±0.1% when ρ known to 3 decimalsCohen ER, Cvitaš T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor AJ (2007)
📚 Bibliografie (8 gezaghebbende bronnen)
  1. Thompson A, Taylor BN (2008). Guide for the Use of the International System of Units (SI). NIST Special Publication 811 · DOI: 10.6028/NIST.SP.811-2008
    → Primary SI standard for US scientific usage
  2. Cohen ER, Cvitaš T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor AJ (2007). Quantities, Units and Symbols in Physical Chemistry — The IUPAC Green Book. RSC Publishing, 3rd ed. · DOI: 10.1039/9781847557889 · ISBN: 978-0-85404-433-7
    → Canonical IUPAC guide for chemistry quantities/units
  3. BIPM (Bureau International des Poids et Mesures) (2019). The International System of Units (SI), 9th edition. BIPM ·
    → International SI definitions (incl. redefined kilogram 2019)
  4. ISO/IEC (2022). Quantities and units — Part 1: General. International Organization for Standardization — ISO 80000-1:2022 ·
    → General rules for physical quantities and units
  5. ISO/IEC (2019). Quantities and units — Part 9: Physical chemistry and molecular physics. International Organization for Standardization — ISO 80000-9:2019 ·
    → Concentration / molality / amount-of-substance conventions
  6. Tiesinga E, Mohr PJ, Newell DB, Taylor BN (2021). CODATA recommended values of the fundamental physical constants: 2018. Rev. Mod. Phys. 93(2):025010 · DOI: 10.1103/RevModPhys.93.025010
    → Avogadro, gas constant, molar volume (2019 SI revision)
  7. IUPAC (2019). Compendium of Chemical Terminology — the IUPAC Gold Book (online). IUPAC · DOI: 10.1351/goldbook
    → Definitions of mass fraction, molality, normality, ppm, activity
  8. Mills IM, Cvitaš T, Homann K, Kallay N, Kuchitsu K (1988). Quantities, Units and Symbols in Physical Chemistry. Blackwell Scientific Publications, 1st ed. · ISBN: 0-632-01773-5
    → Historical predecessor of IUPAC Green Book
Vergelijkbare moleculaire structurenMolGod_SIMSTR_1

Vergelijkbare structuren worden geladen...

🧪 Wizard voor het bereiden van oplossingen WIZARD MolGod_PREP_1
① Selecteer concentratie
② Doelvolume
③ Oplosmiddel

Berekeningen volgens: IUPAC Gold Book ↗, Merck ↗

Computationele chemieMolGod_COMPCHEM_1

Computationele gegevens worden geladen...

🛡️ Veiligheid — CAS 1309-37-1MolGod_SAFEHUB_MAIN
Mededeling over gegevensbeperkingen. De veiligheidsinformatie op deze pagina is uitsluitend ter informatie en vervangt geen volledig veiligheidsinformatieblad (SDS). Raadpleeg vóór gebruik van het product het actuele veiligheidsinformatieblad van de fabrikant en de GHS/CLP-richtlijnen. De CLP-indeling geldt voor de zuivere bulkstof, niet voor commerciële formuleringen.

GHS/CLP-indeling — Verordening (EG) nr. 1272/2008 + UN GHS Rev. 9 (2021).

⚠️ Gevaar (Danger)
GHS05 — Bijtend
GHS05 Bijtend
GHS07 — Irriterend / schadelijk
GHS07 Irriterend / schadelijk
GHS08 — Gezondheidsgevaar
GHS08 Gezondheidsgevaar

🚨 Gevarenaanduidingen (H)

  • H370 — Veroorzaakt schade aan organen.
  • H372 — Veroorzaakt schade aan organen bij langdurige of herhaalde blootstelling.
  • H315 — Veroorzaakt huidirritatie.
  • H318 — Veroorzaakt ernstig oogletsel.
  • H335 — Kan irritatie van de luchtwegen veroorzaken.

🛡 Voorzorgsmaatregelen (P)

  • P264 — Na het werken met dit product … grondig wassen.
  • P260 — Stof/rook/gas/nevel/damp/spuitnevel niet inademen.

⚠ Indeling op basis van een consensus van bronnen (PubChem / kennisgevingen van leveranciers) — niet geverifieerd tegen de geharmoniseerde indeling in bijlage VI (CLP). De omvang van de gevaren kan ruimer zijn dan de officiële indeling; verifieer vóór gebruik aan de hand van het actuele veiligheidsinformatieblad van de leverancier.

⚠ IARC — Groep 3: niet in te delen wat betreft kankerverwekkendheid voor de mens (beoordeeld door IARC). (Onafhankelijke beoordeling van het bewijs voor kankerverwekkendheid door IARC/WHO — vult de bovenstaande CLP-indeling aan.)
Referentie (Chicago): IARC. n.d. IARC Monographs on the Identification of Carcinogenic Hazards to Humans: CAS 1309-37-1. Lyon, France: International Agency for Research on Cancer, World Health Organization. https://monographs.iarc.who.int/list-of-classifications/.
Indeling uit de lokale MOL-GOD-lijst (snapshot) — niet geverifieerd tegen de actuele IARC-lijst. Verifiëren

Vertalingen: CLP-verordening (EG) 1272/2008, Bijlage III en IV. Gegevens: PubChem/NLM.

📚 Geconsolideerde wetenschappelijke referenties — Chicago Author-Date 10 bronnen

Referenties verzameld uit alle tabbladen van de Safety Hub. CAS: 1309-37-1 · PubChem ↗

  1. Parlament Europejski i Rada UE. 2008. "Rozporządzenie (WE) nr 1272/2008 w sprawie klasyfikacji, oznakowania i pakowania substancji (CLP)." Dz.Urz. UE L 353. [↗] GHS, Regelgeving
  2. United Nations Economic Commission for Europe (UNECE). 2021. "Globally Harmonized System of Classification and Labelling of Chemicals (GHS), Ninth Revised Edition." United Nations, Geneva. [↗] GHS
  3. Goldfrank, Lewis R., Robert S. Hoffman, Mary Ann Howland, et al.. 2019. "Goldfrank's Toxicologic Emergencies, 11th ed.." McGraw-Hill Education, New York. ISBN 978-1-25-985961-8. Pierwsza pomoc, Toksykologia
  4. National Institute for Occupational Safety and Health (NIOSH). 2023. "NIOSH Pocket Guide to Chemical Hazards (DHHS Publ. 2005-149)." U.S. Department of Health and Human Services / CDC, Cincinnati, OH. [↗] Pierwsza pomoc, PPE, Toksykologia
  5. European Committee for Standardization (CEN). 2016. "EN 374-1:2016 — Protective gloves against dangerous chemicals and micro-organisms." CEN, Brussels. [↗] PPE
  6. UNECE. 2023. "European Agreement Concerning the International Carriage of Dangerous Goods by Road (ADR 2025)." United Nations, Geneva. [↗] Utylizacja, Regulacje
  7. National Fire Protection Association (NFPA). 2022. "NFPA 400 — Hazardous Materials Code." NFPA, Quincy, MA. [↗] Magazynowanie
  8. Urben, P.G. (ed.). 2017. "Bretherick's Handbook of Reactive Chemical Hazards, 8th ed.." Butterworth-Heinemann / Elsevier, Oxford. [↗] Magazynowanie
  9. Ministerstwo Klimatu i Środowiska RP. 2023. "Baza danych o produktach i opakowaniach oraz o gospodarce odpadami (BDO)." Ministerstwo Klimatu i Środowiska, Warszawa. [↗] Utylizacja
  10. International Agency for Research on Cancer (IARC / WHO). 2024. "IARC Monographs on the Identification of Carcinogenic Hazards to Humans — List of Classifications." WHO, Lyon. [↗] Toksykologia

Tabbladen met eigen referenties (Emergency, PPE, Storage, Waste) bevatten aanvullende bibliografische vermeldingen binnen hun respectieve secties.

📈 Analytische statistiek (t-test · RSD · Grubbs · Q-Dixon) ICH Q2

Plak een reeks herhaalde metingen (CSV of één getal per regel). De calculator berekent het gemiddelde, de standaardafwijking en 95% CI, en detecteert uitschieters (Grubbs + Dixon Q).

Scheidingsteken: komma, spatie, tab, nieuwe regel. Minimaal 3 metingen.
📐 Statistische formules
  • x̄ = Σxᵢ / n — rekenkundig gemiddelde
  • s² = Σ(xᵢ - x̄)² / (n-1) — steekproefvariantie
  • s = √s² — standaardafwijking
  • RSD% = (s / x̄) × 100% — relatieve standaardafwijking
  • CI₉₅ = x̄ ± t(0.05, n-1) × s / √n — Student's t
  • G = |xᵢ - x̄| / s — Grubbs-test
  • Q = |xsuspect - xnearest| / |xmax - xmin| — Dixon Q-test

Bron: ICH Q2(R2) Validation of Analytical Procedures · ICH PDF ↗

🧪 Bufferrecept-calculator UNIEK

Kies een buffer uit de lijst van 20 populaire systemen → voer de streef-pH in → ontvang een exact recept met de af te wegen massa's.

Stap 1: Kies een buffersysteem

📜 Receptgeschiedenis (laatste 10)
📅 Project Planner — Lab Experiment Manager NIEUW

Plan uw volledige laboratoriumproject: voeg experimenten toe met reagentia, replicaten en duur. U ontvangt een Gantt-diagram, een boodschappenlijst (met links naar de winkel!), een budget met 10% marge en een GHS-risicomatrix.

🧪 Oplosbaarheid en compatibiliteit met oplosmiddelen MolGod_SOLUB_1
Molecuul
Iron oxide (Fe2O3)
Formule
Fe₂O₃
logP (XLogP3)
Massa (g/mol)
159.69
Polariteit

⚠️ Ionische / anorganische verbinding — de Hansen-parameters (δD/δP/δH) zijn niet van toepassing: het oplossen wordt bepaald door de kristalroosterenergie en de solvatatie van ionen, niet door moleculaire cohesie. Het HSP-blok en de Hansen-bol zijn weggelaten. HSP-afhankelijke kolommen (Compat./Ra/Visueel) zijn gemarkeerd met „n.v.t." — baseer de keuze van het oplosmiddel op experimentele gegevens.

Solvent compatibility table not available for this substance.
The Hansen parameters fall outside the range of the method, so the distance Ra cannot be calculated, and the database holds no solubility measurement to put in its place. Rather than eleven ratings with nothing behind them, we show none. Base the solvent choice on the safety data sheet and on experimental data.
📚 Wetenschappelijke referenties voor oplosmiddelen (Chicago Author-Date) — klik om uit te vouwen

11 solvents · 54 full citations (NIST/CRC/IARC/Hansen/Reichardt/Smallwood/Wypych/Armarego/Snyder/GESTIS) — below.

Water (H₂O)
  1. NIST — NIST Chemistry WebBook — Water (CAS 7732-18-5)
  2. CRC — CRC Handbook of Chemistry and Physics, 104th ed., Sec. 8 (Properties of Water)
  3. IAPWS — IAPWS Release on Static Dielectric Constant of Water
  4. Reichardt 2011 — Solvents and Solvent Effects in Organic Chemistry
  5. GESTIS — GESTIS Substance Database — Water
Ethanol (EtOH)
  1. NIST — NIST Chemistry WebBook — Ethanol (CAS 64-17-5)
  2. CRC — CRC Handbook — Ethanol physical constants
  3. Snyder & Kirkland — Modern Liquid Chromatography — Ethanol eluotropic
  4. Smallwood — Handbook of Organic Solvent Properties — Ethanol
  5. GESTIS — GESTIS Substance Database — Ethanol
Methanol (MeOH)
  1. NIST — NIST Chemistry WebBook — Methanol (CAS 67-56-1)
  2. CRC — CRC Handbook — Methanol physical constants
  3. Snyder & Kirkland — Modern Liquid Chromatography — MeOH eluotropic, eo=0.95
  4. GESTIS — GESTIS Substance Database — Methanol
Acetone
  1. NIST — NIST Chemistry WebBook — Acetone (CAS 67-64-1)
  2. CRC — CRC Handbook — Acetone physical & thermodynamic constants
  3. Hansen 2007 — Hansen Solubility Parameters — Acetone (dD=15.5, dP=10.4, dH=7.0)
  4. Smallwood — Handbook of Organic Solvent Properties — Acetone
  5. GESTIS — GESTIS Substance Database — Acetone
Acetonitrile (ACN)
  1. NIST — NIST Chemistry WebBook — Acetonitrile (CAS 75-05-8)
  2. CRC — CRC Handbook — Acetonitrile constants
  3. Snyder & Kirkland — Modern Liquid Chromatography — ACN gold-standard HPLC eluent
  4. Reichardt 2011 — Solvents and Solvent Effects — ACN dipolar aprotic
  5. GESTIS — GESTIS Substance Database — Acetonitrile
DMSO
  1. NIST — NIST Chemistry WebBook — DMSO (CAS 67-68-5)
  2. Wypych 2019 — Handbook of Solvents Vol. 1 — DMSO comprehensive properties
  3. Hansen 2007 — HSP — DMSO (dD=18.4, dP=16.4, dH=10.2)
  4. Reichardt 2011 — Solvents and Solvent Effects — DMSO E_T(30)=45.1, dipolar aprotic
  5. GESTIS — GESTIS Substance Database — DMSO
THF
  1. NIST — NIST Chemistry WebBook — THF (CAS 109-99-9)
  2. Armarego 2009 — Purification of Laboratory Chemicals — THF drying & peroxide test
  3. Hansen 2007 — Hansen Solubility Parameters — THF (dD=16.8, dP=5.7, dH=8.0)
  4. Smallwood — Handbook of Organic Solvent Properties — THF
  5. GESTIS — GESTIS Substance Database — Tetrahydrofuran
DCM (CH₂Cl₂)
  1. NIST — NIST Chemistry WebBook — Dichloromethane (CAS 75-09-2)
  2. IARC 71 — IARC Monograph 71 — DCM (Group 2A carcinogen)
  3. Hansen 2007 — Hansen Solubility Parameters — DCM (dD=18.2, dP=6.3, dH=6.1)
  4. Reichardt 2011 — Solvents and Solvent Effects — DCM polarity index
  5. GESTIS — GESTIS Substance Database — Dichloromethane
Chloroform (CHCl₃)
  1. NIST — NIST Chemistry WebBook — Chloroform (CAS 67-66-3)
  2. IARC 73 — IARC Monograph 73 — Chloroform (Group 2B carcinogen)
  3. Hansen 2007 — Hansen Solubility Parameters — CHCl3 (dD=17.8, dP=3.1, dH=5.7)
  4. Reichardt 2011 — Solvents and Solvent Effects — CHCl3 H-bond donor strength
  5. GESTIS — GESTIS Substance Database — Chloroform
n-Hexane
  1. NIST — NIST Chemistry WebBook — n-Hexane (CAS 110-54-3)
  2. ATSDR n-Hexane — ATSDR Toxicological Profile for n-Hexane — neuropatia obwodowa (n-Heksan NIE jest kancerogenem IARC)
  3. Hansen 2007 — Hansen Solubility Parameters — n-Hexane (dD=14.9, dP=0, dH=0)
  4. Snyder & Kirkland — Modern Liquid Chromatography — n-Hexane NP standard, eo=0.00
  5. GESTIS — GESTIS Substance Database — n-Hexane
Toluene
  1. NIST — NIST Chemistry WebBook — Toluene (CAS 108-88-3)
  2. IARC 71 — IARC Monograph 71 — Toluene
  3. Hansen 2007 — Hansen Solubility Parameters — Toluene (dD=18.0, dP=1.4, dH=2.0)
  4. Smallwood — Handbook of Organic Solvent Properties — Toluene
  5. GESTIS — GESTIS Substance Database — Toluene
Oplosbaarheidstheorie (toegepast bij de voorspelling van compatibiliteit):
  1. Yalkowsky, Samuel H., and Shri C. Valvani. 1980. "Solubility and Partitioning I: Solubility of Nonelectrolytes in Water." Journal of Pharmaceutical Sciences 69 (8): 912–922. https://doi.org/10.1002/jps.2600690814 — General Solubility Equation (GSE): logS = 0.5 − logP − 0.01(MP−25).
  2. Hansen, Charles M. 2007. Hansen Solubility Parameters: A User's Handbook. 2nd ed. CRC Press. https://doi.org/10.1201/9781420006834 — HSP-triplet (dD, dP, dH) + Ra-formule.
  3. Stefanis, E., and C. Panayiotou. 2008. "Prediction of Hansen Solubility Parameters with a New Group-Contribution Method." Int J Thermophys 29: 568–585. https://doi.org/10.1007/s10765-008-0415-z
  4. Reichardt, Christian, and Thomas Welton. 2011. Solvents and Solvent Effects in Organic Chemistry. 4th ed. Wiley-VCH. https://doi.org/10.1002/9783527632220 — E_T(30) polarity scale, solwatochromia.
  5. Snyder, Lloyd R., Joseph J. Kirkland, and John W. Dolan. 2010. Introduction to Modern Liquid Chromatography. 3rd ed. Wiley. https://doi.org/10.1002/9780470508183 — Eluotropic series, polarity index.
  6. Van Krevelen, D. W., and K. Te Nijenhuis. 2009. Properties of Polymers. 4th ed. Elsevier. https://doi.org/10.1016/B978-0-08-054819-7.X0001-5 — Hoftyzer–Van Krevelen group contribution dla dD/dP/dH z SMILES.
  7. Marcus, Yizhak. 1998. The Properties of Solvents. Wiley Series in Solution Chemistry, Vol. 4. ISBN 9780471983699 — Volledige tabellarische set van 250+ oplosmiddelen (ε, μ, doniciteit, acceptorgetallen).
  8. PubChem Compound Database — CAS 1309-37-1 lookup ↗ — logP (XLogP3), water solubility experimental + predicted.

Volledige bibliografie in het accordeon REFERENTIES (onderaan de pagina) — Chicago Manual of Style 17th ed., Author-Date.

⚗️ Controleer de reactiecompatibiliteit MolGod_RXNCOMP_1
3 0 0
Gezondheid: 3/4
Ontvlambaarheid: 0/4
Reactiviteit: 0/4
Volgens NFPA 704 / berekend uit H-codes

Controleer of Iron oxide (Fe2O3) compatibel is met een ander reagens

📦 Opslagcompatibiliteitsmatrix
Zuren Basen Oxidatoren Ontvlambaar Giftig Gazy
Zuren
Basen
Oxidatoren
Ontvlambaar
Giftig
Gazy
✓ Samen te bewaren · ⚠ Voorzichtig · ✗ NIET samen bewaren · OSHA Chemical Segregation ↗

Compatibiliteitsgegevens uit: Bretherick's Handbook (7th ed.) ↗, GESTIS ↗, ECHA REACH ↗, NFPA 704 ↗

🧮 Laboratoriumcalculators (8) MolGod_LABCALC_1
Verdunning (C₁V₁=C₂V₂)
Molariteit (M=n/V)
pH-buffer (Henderson-Hasselbalch)
Beer-Lambert (A=εcl)
Massa → Mol
Concentratie % → M
ppm → mg/L
Temperatuur C↔F↔K

Geverifieerde formules: IUPAC Gold Book ↗, DOI ↗

📊 Spectroscopische spectradatabases MolGod_SPECDB_3
📋 Generator van laboratoriumprotocollen MolGod_PROTOCOL_1

Protocol gegenereerd op basis van: GHS SDS, Aldrich Lab Guide ↗

🏷️ Etikettengenerator (QR) MolGod_LABEL_1
Iron Oxide Red• Iron trioxide / iron(3+) oxide• IUPAC: oxo(oxoferriooxy)iron• CAS: 1309-37-1• EC: 215-168-2• Formule: Fe2O3• Massa: 159.69 g/molGEVAARGHS-GEVARENAANDUIDINGEN:(zelfclassificatie leveranciers — niet-bindend)H370 H372 H315 H318 H335P260: Stof/rook/gas/nevel/damp/spuitnevel niet inademen.P264: Na het werken met dit product … grondig wassen.Anhui Eapearl Chemical Co., Ltd.12th Floor, Tongguan Number Valley, Tongling, Anhui, China+86 186 5620 1888[email protected]epchems.com
Deskryptory Lipinskiego (struktura)
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Voer in wat u wilt bereiden — ik genereer een SOP

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Voorgedefinieerde recepten:
📚 Overzicht van de wetenschappelijke literatuur — CAS 1309-37-1MolGod_LITHUB_MAIN
⭐ Belangrijkste bevindingen (wetenschappelijke literatuur) 1 publicaties
🏆 CAS 1309-37-1 — multi-criteria ranking (W12): 30% citaties · 20% recentheid · 20% onderwerp · 15% historisch · 15% open access.
  1. #1
    Dominic Campopiano, Sadler, P. J., Harvey, Ian et al. (2010) · Hindawi Publishing Corporation
    Waarom het belangrijk is: Open access
    SCORE 5.11 Mechanisme Citations: 8 Open Access DOI ↗
🔬 HPLC — methoden en parameters — CAS 1309-37-1MolGod_HPLCHUB_MAIN
📈 HPLC-gradiënt — optimalisator (LSS) SJABLOON

logP onbekend — PubChem heeft geen XLogP-waarde geretourneerd. De onderstaande gradiënt is een generiek sjabloon 5–95% MeCN/H2O in 15 min; controleer de parameters vóór gebruik.

⚠ logP niet beschikbaar. PubChem heeft geen XLogP3-eigenschap voor dit CAS-nummer geretourneerd. De onderstaande gradiëntwaarden zijn een generiek sjabloon — geen op de verbinding aangepaste LSS-fit.
  • Kolom: C18
  • Buffer: phosphate
  • Debiet: 1 mL/min
  • logP: logP niet beschikbaar
  • Ramp: 21% → 95% B, 15 min
  • Totale analysetijd: 28 min
t (min) %A %B flow (mL/min) Opmerking
0 79 21 1 start (evenwicht)
2 79 21 1 einde van de initiële hold
17 5 95 1 einde van de LSS-ramp
22 5 95 1 kolomspoeling
23 79 21 1 terug naar init
28 79 21 1 her-equilibratie
📚 Wetenschappelijke referenties (Chicago Author-Date)
  1. Snyder, Lloyd R., John W. Dolan, and Joseph J. Kirkland. 2010. Introduction to Modern Liquid Chromatography. Wiley. — Chapter 9 — gradient elution, LSS theory (cited as Snyder et al. 2010 in tool description).
  2. Schoenmakers, Peter J. 1986. Optimization of Chromatographic Selectivity: A Guide to Method Development. Elsevier. — Numerical optimization of gradient programs.
  3. Snyder, L. R., and J. W. Dolan. 2007. High-Performance Gradient Elution: The Practical Application of the Linear-Solvent-Strength Model. Wiley. — Foundational LSS reference for the %B_init = 5 + 8·logP heuristic implemented here.
  4. Nikitas, Pavlos, and Adrian Pappa-Louisi. 2009. "Retention models for isocratic and gradient elution in reversed-phase liquid chromatography." Journal of Chromatography A 1216: 1737-1755. [DOI ↗] — Modern review of gradient retention models — basis for non-LSS extensions.
  5. Carr, Peter W.. 2009. "The new physical chemistry of HPLC." Journal of Chromatography A 1216: 1764-1772. [DOI ↗]
  6. Dong, Michael W. 2019. HPLC and UHPLC for Practicing Scientists. Wiley. https://doi.org/10.1002/9781119313793. — Modern UHPLC gradient programming, sub-2 µm scaling rules.
  7. Wu, Naijun, and Anton M. Clausen. 2007. "Fundamental and practical aspects of ultrahigh pressure liquid chromatography for fast separations." Journal of Separation Science 30: 1167-1182. [DOI ↗]
  8. Stoll, Dwight R., and Peter W. Carr. 2017. "Two-Dimensional Liquid Chromatography: A State of the Art Tutorial." Analytical Chemistry 89: 519-531. [DOI ↗] — Reference for orthogonal gradient design (2D-LC second dimension).
  9. Dolan, John W.. 2013. "When to Modify Method Conditions." LCGC North America 31: 192-199.
  10. Meyer, Veronika R. 2010. Practical High-Performance Liquid Chromatography. Wiley. — Chapter 7 — practical gradient design with isokratyczny scouting.

REST: /wp-json/molgod/v1/hplc/gradient/1309-37-1

📐 Kolomafmetingen — van Deemter-calculator N=12,466

Formule: H = A + B/u + C·u (Van Deemter et al. 1956), N = L/H, ΔP ≈ η·L·u / (K_p·dp²) (Knox 1977). u_opt = √(B/C) (Giddings 1965).

Afmetingen150 × 4.6 mm, 5 µm
Theoretische schotels (N)12,466
N bij u_opt12,500
HETP (huidig)12.032 µm
Min. HETP12 µm
Lineaire snelheid (u)0.1003 cm/s
u_opt (van Deemter)0.12 cm/s
Tegendruk (ΔP)42.1 bar
Analysetijd (dood volume)2.49 min
📚 Wetenschappelijke referenties (Chicago Author-Date)
  1. Van Deemter, J. J., F. J. Zuiderweg, and A. Klinkenberg. 1956. "Longitudinal diffusion and resistance to mass transfer as causes of nonideality in chromatography." Chemical Engineering Science 5: 271-289. https://doi.org/10.1016/0009-2509(56)80003-1 — Original van Deemter equation paper — basis of H = A + B/u + C·u in this calculator.
  2. Giddings, J. Calvin. 1965. "Dynamics of Chromatography, Part I: Principles and Theory.". Marcel Dekker. — Theoretical underpinning of HETP minimum and u_opt = sqrt(B/C).
  3. Poppe, Hans. 1997. "Some reflections on speed and efficiency of modern chromatographic methods." Journal of Chromatography A 778: 3-21. https://doi.org/10.1016/S0021-9673(97)00376-2 — Speed-efficiency Pareto plot — context for sub-2 µm UHPLC scaling.
  4. Wu, Naijun, and Anton M. Clausen. 2007. "Fundamental and practical aspects of ultrahigh pressure liquid chromatography for fast separations." Journal of Separation Science 30: 1167-1182. https://doi.org/10.1002/jssc.200700026 — UHPLC pressure scaling — extends Darcy ΔP formula to sub-2 µm particles.
  5. Carr, Peter W.. 2009. "The new physical chemistry of HPLC." Journal of Chromatography A 1216: 1764-1772. https://doi.org/10.1016/j.chroma.2008.11.094 — Modern reinterpretation of A, B, C terms (eddy diffusion vs. b-term).
  6. Knox, John H.. 1977. "Practical aspects of LC theory." Journal of Chromatographic Science 15: 352-364. https://doi.org/10.1093/chromsci/15.9.352 — Reduced plate height equation h = a·v^(1/3) + b/v + c·v.
  7. Dong, Michael W.. 2019. "HPLC and UHPLC for Practicing Scientists.". Wiley (2nd ed.). https://doi.org/10.1002/9781119313793 — Practical N targets vs particle size table (UHPLC method scaling).
  8. Snyder, L. R., J. J. Kirkland, and J. L. Glajch. 1997. "Practical HPLC Method Development.". Wiley (2nd ed.). — Column dimensioning rules of thumb (L, dp, dc) for given α and N.
  9. Engelhardt, Heinz. 2014. "100 Years of Chromatography.". Wiley-VCH (2nd ed.).
  10. Meyer, Veronika R.. 2010. "Practical High-Performance Liquid Chromatography.". Wiley (5th ed.).

REST: /wp-json/molgod/v1/hplc/column/1309-37-1

🧪 Mobiele fase — compatibiliteitsmatrix MISCIBLE
Component Naam UV-cutoff (nm) P' Detectoren
Oplosm. Acetonitrile (MeCN) 190 5.8 UV, MS, ELSD, RID, FLD
Oplosm. Water 190 10.2 UV, MS, ELSD, RID, FLD
Buffer Phosphate (KH2PO4 / K2HPO4) 195 pH 2.0-3.0 / 6.5-8.0 / 11.0-12.5 MS ✗

Detector: UV — compatibel met beide oplosmiddelen.

📚 Wetenschappelijke referenties (Chicago Author-Date)
  1. Sadek, Paul C.. 2002. "The HPLC Solvent Guide.". Wiley-Interscience (2nd ed.).
  2. Snyder, L. R.. 1978. "Classification of the solvent properties of common liquids." Journal of Chromatographic Science 16: 223-234. https://doi.org/10.1093/chromsci/16.6.223
  3. Reichardt, Christian, and Thomas Welton. 2010. "Solvents and Solvent Effects in Organic Chemistry.". Wiley-VCH (4th ed.).
  4. Vailaya, Anant, and Csaba Horváth. 1998. "Retention thermodynamics in hydrophobic interaction chromatography." Industrial & Engineering Chemistry Research 37: 4040-4055. https://doi.org/10.1021/ie980212h
  5. Krstulović, Andrea M., and Phyllis R. Brown. 1981. "Reversed-phase High-Performance Liquid Chromatography.". Wiley.
  6. Snyder, L. R., J. J. Kirkland, and J. L. Glajch. 1997. "Practical HPLC Method Development.". Wiley (2nd ed.).
  7. Carr, Peter W.. 2009. "The new physical chemistry of HPLC." Journal of Chromatography A 1216: 1764-1772. https://doi.org/10.1016/j.chroma.2008.11.094
  8. Boysen, Reinhard I., and Milton T. W. Hearn. 2009. "Multi-modal HPLC of proteins." Journal of Chromatographic Science 47: 645-654. https://doi.org/10.1093/chromsci/47.8.645
  9. Dong, Michael W.. 2019. "HPLC and UHPLC for Practicing Scientists.". Wiley (2nd ed.). https://doi.org/10.1002/9781119313793
  10. Meyer, Veronika R.. 2010. "Practical High-Performance Liquid Chromatography.". Wiley (5th ed.).

REST: /wp-json/molgod/v1/hplc/mobile-phase?solvent_a=...&solvent_b=...

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Molecuulspecifieke scenario's, probleemoplossing en literatuurverwijzingen

Molecular Predictor

Predicted parameters for this molecule (CAS 1309-37-1) are based on literature-backed models (Snyder-Dolan LSS, Neue pore-size rules).

Retention Time
1.2 min
Range: 0.84 – 1.56
confidence: low
Model: Snyder-Dolan LSS na kolumnie C18 150×4.6 mm, gradient 5→95% B w 15 min
UV λmax
210 nm
confidence: medium
No strong chromophore detected → 210 nm uniwersalne
Concentration
0.5 mg/mL
= 3.131 mM
confidence: high
Safe linear range detektora UV (nie przekroczy 1.5 AU)
Buffer pH
2
Range: 1.5 – 2.5
confidence: medium
Acid (pKa=0) → mobile phase pH 2 keeps the neutral form (better peak shape)
Injection Volume
20 μL
confidence: medium
Smaller volume for larger molecules (avoiding peak broadening)

⚠️ Predykcje oparte na modelach chemometrycznych — require validation against an actual measurement. Confidence: low/medium/high depending on the available descriptors.

Echt chemicusprobleem

First method — how do you know where to start?

Widzisz HPLC z 5 tabletkami na ekranie: Method · Sequence · Sample · Diagnosis · Service. Klikasz Method — "No method loaded". Co teraz?

Hoe wij dit oplossen

1

Exact Solvent List

Name + CAS + Grade + Role in method

2

Grade Explanations

HPLC vs LC-MS vs Far UV — when to use which

3

Consumption Calculator

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Interactieve calculator

Deep Education

De chemie van de mobiele fase begrijpen

Why Acetonitrile vs Methanol?
PropertyAcetonitrile (ACN)Methanol (MeOH)
Viscosity (20°C)0.37 cP0.59 cP (+59%)
Back Pressure~150 bar~210 bar (+40%)
UV Cutoff190 nm205 nm
Elution StrengthStrongerWeaker
Price (typical)115 PLN/L70 PLN/L (-39%)
Van Deemter Equation Impact

H = A + B/u + Cu

Higher viscosity (MeOH) → lower optimal flow rate → longer runtime.

Buffer Selection: Why NH₄HCO₃?
  • Volatile: MS-compatible (evaporates without residue)
  • pH range: 6.5–8.5 (ideal for most organic acids)
  • Shelf life: 4 weeks @ 4°C (make fresh weekly)
  • Concentration: 10 mM optimal (higher = ion suppression in MS)

Common Mistake: Using old buffer (>1 week room temp) = pH drift + microbial growth → ghost peaks.

Cost Savings Calculator

How much you save by using naszej metody zamiast alternatyw? Kwartalne koszty labu HPLC.

1. Solwenty — ACN vs MeOH

Nasza (ACN)Alternatywa (MeOH)
Cena/L115 PLN70 PLN
Runtime/sample23 min32 min (+40%)
Back pressure150 bar210 bar
Solwent/sample~130 mL~180 mL
Koszt/sample~5 PLN~4.5 PLN
Czas/sample23 min32 min
Czas pracy chemika
Total/quarter

2. Kolumna — z guard vs bez

Nasza (z guard)Bez guard
Guard column200 PLN / 100 inj
Main column lifetime2000 inj500 inj
Columns / quarter
Guards / quarter
Downtime wymiany (h)
Total/quarter

3. Method development — SOP vs scratch

Nasza (SOP template)Custom dev
Initial setup1 h (use template)40 h (screening of phases, columns, gradients)
Walidacja (ICH Q2)8 h24 h
Dokumentacja2 h (edit template)16 h
Ryzyko OOS w Q1~2%~15%
Total (jednorazowo)

4. Fast gradient (high-throughput) — ROI

Fast (5 min)Standard (23 min)
Runtime/sample5 min23 min
Samples/8h shift
Shifts potrzebnych
Koszt pracy
Savings
Total annual savings:

Veelgestelde vragen

0.79 g NH₄HCO₃ (MW 79.06). Dissolve in 900 mL, make up to 1000 mL, check pH = 7.0±0.2.

Source: r/chemistry

ACN: niższa lepkość (mniejsze ciśnienie), UV cutoff 190 nm. MeOH: 40% tańszy, ale wyższe ciśnienie +50 bar i UV cutoff 205 nm. Dla gradientu: ACN preferowany.

Source: Chromatography Forum

Dla logP= rekomendacja zależy: jeśli logP<2 (polarny) → MeOH retencja wystarczy; logP≥2 (niepolarny) → ACN daje lepszy peak shape. Dla tej molekuły (MW=159.69, CAS 1309-37-1) zaczynaj od ACN w gradiencie 5→95% B.

Source: Snyder LSS Model

NIE dla LC-MS (sole w wodzie dest. → piki duchów). OK dla UV-HPLC tylko jeśli filtrujesz 0.22 μm. Bezpiecznie: HPLC grade 9 zł/L.

Source: ResearchGate

Gradient Problem From The Lab

Transfer metody z HPLC na UHPLC

Your HPLC 4.6×250mm 5μm method works. You have to make a UHPLC version 2.1×50mm 1.7μm. How to scale it (Neue/Jorgenson)?

Our Gradient Strategy

  • Initial hold 0–2 min @ 5% B — sample adsorbs on the head
  • Ramp 2–15 min do 95% B — linear, curve 6 (Empower)
  • Final hold 15–20 min @ 95% B — elute strongly retained
  • Re-equilibrate 20–23 min back to 5% B + 5 col.volumes

Gradient Visualizer

Gradient Timeline

#Time%B start%B endDurationSlope (Δ%B/min)Step

Slope & Dwell Volume Test

Slope (Δ%B/min)
Gradient volume (mL)
Dwell vol estimate (mL)
k*·t0 (dla Rs)

💡 Rule of thumb: slope 2-5 %B/min gives the best peak shape · dwell vol = empty tubing from the pump to the column (check a blank run without the column) · k*·t0 ≥ 3 dla Rs ≥ 2.0.

Snyder-Dolan LSS Model

Log k = log kw − S·φ, gdzie φ = fraction B. Optymalny gradient: Δφ ≈ 0.6–0.8 per 5 t0. Dla kolumny 250×4.6mm @ 1 mL/min → t0 ≈ 2 min → gradient 10–12 min.

Veelgestelde vragen

Heurystyka Snyder: Rt ≈ 2.5·logP + 1.2 min. Dla oxo(oxoferriooxy)iron (logP=) → szacunkowe Rt=— min. ±30% wariancja zależnie od dead volume i gradient slope. Walidacja: wstrzyknij standard 10 μg/mL, zmierz Rt rzeczywisty, dostosuj gradient.

Source: Predictive modeling

Heurystyka Snydera: start%B = (logP - 1) × 10. Dla logP=2 → start 10% B. Zawsze z 2 min isocratic hold aby pozwolić próbce zaadsorbować.

Source: LCGC

Linear = płynne odklejanie związku od kolumny = lepszy peak shape (Tf < 1.3). Step gradient daje shock waves = artifacts.

Source: Snyder Seminar

Column Choice Dilemma

How to prepare the mobile phase for the first time

Protokół mówi "ACN/H₂O 60:40". W szafce masz ACN HPLC grade i wodę z kranu. Nikt ci nie powiedział, że kran = dramat. Koszt błędu: zniszczona kolumna 1800 PLN.

Recommended Columns

A

Zorbax Eclipse Plus C18

150×4.6 mm · 3.5 μm · pH 2–9

B

Waters XBridge C18

150×4.6 mm · 3.5 μm · pH 1–12 (high pH)

C

Phenomenex Kinetex C18

100×4.6 mm · 2.6 μm core-shell · fast

Column Lifetime Rules

  • Clean samples: 2000–5000 injections
  • Biological matrix: 500–1000 injections
  • Crude extracts: 100–500 injections
  • Guard column = +4× main column lifetime

Veelgestelde vragen

Mała kolumnka (2cm) PRZED główną. Łapie zanieczyszczenia. Koszt 200 PLN, wymiana co 100 wstrzyknięć. Oszczędność: 1600 PLN na lifetime głównej kolumny.

Source: Agilent App Notes

C18 (18 węgli, bardziej lipofilowa) dla logP 0-5. C8 (8 węgli) dla bardzo polarnych (logP <0). C4 dla białek. Twój związek logP~2 → C18.

Source: Phenomenex Knowledge

Rule of thumb: analyty MW10000 (białka) → pore 1000 Å. Dla MW=159.69 (CAS 1309-37-1) użyj standardowej kolumny C18 100 Å.

Source: Phenomenex Guide

Detection Gotcha

48 godzin stracone na niewidoczne piki

Day 1 — I prepared the sample, injected it, baseline flat. Day 2 — I repeated it 6× with different samples. Nothing. Wave check? Professor: "Take a look at the DAD scan". λ_max = 214 nm, and I had 254 nm set.
Lesson learned (Anna K., studentka 2. rok, PW, 2024-11-15):
ALWAYS run a UV scan of an unknown compound BEFORE the method. 254 nm = aromatics only. 210 nm = universal. Time saved: 2 days of work.

DAD Settings

ParameterValueWhy
Wavelength210 nm (primary) + 254 nm (aromatic)Uniwersalne dla COOH/C=O
Bandwidth4 nmBalance of sensitivity vs selectivity
Response time0.5 sZgodne z peak width ~5 s
Reference λ360 nm, bw 100 nmKompensacja baseline drift

Alternative Detectors

  • RID — for compounds without UV absorbance (sugars, polymers). Sensitivity x1000 lower.
  • ELSD — uniwersalny, ale destroys sample (niezgodny z MS).
  • LC-MS/MS — LOD 1 pg, strukturalna potwierdzenie via MRM.
  • CAD — charged aerosol, lepsze od ELSD dla lipid/polar.

Validation Reality Check

High-throughput screening 100+ samples/day

Lab QC — 100 samples a day. 23 min per sample = 38h (impossible). You need a fast method <5 min + column switcher.

USP <621> + ICH Q2(R1) Criteria

ParameterAcceptanceFormula
Resolution (Rs)≥ 2.02(tR2 − tR1) / (w1 + w2)
Tailing factor (Tf)≤ 1.5W0.05 / (2·f)
Plates (N)≥ 500016·(tR / w)²
RSD (6 injections)≤ 2.0%σ / μ × 100%
Linearity (R²)≥ 0.999080–120% spec, 5 levels

Pre-Flight SST Checklist

  • Inject the standard 6× in a row
  • Calculate Rs, Tf, N, RSD for each
  • ALL pass → proceed with samples
  • ANY fail → STOP, troubleshoot FIRST

Regulatory Compliance

The method was designed in accordance with the regulations below. Click a badge to see compliance details.

USP <621> Chromatography Compliant

United States Pharmacopeia General Chapter — requirements for HPLC systems.

  • Resolution (Rs) &geq; 2.0
  • Tailing factor (Tf) &leq; 2.0
  • Theoretical plates (N) &geq; 2000
  • Relative standard deviation (RSD) &leq; 2.0% (6 replicates)

Reference: USP-NF 2024, General Chapter <621> Chromatography

ICH Q2(R1) Method Validation Compliant

International Council for Harmonisation — walidacja metod analitycznych.

  • Specificity — baseline separation of all analytes
  • Linearity — R² &geq; 0.9990, 5 levels (80–120% of spec)
  • Accuracy — 98–102% recovery
  • Precision — RSD &leq; 2.0% (repeatability), &leq; 3.0% (intermediate)
  • Robustness — DoE across 5 factors (flow ±10%, temp ±5°C, pH ±0.2, %B ±2%, λ ±2 nm)

Reference: ICH Q2(R1) Validation of Analytical Procedures, 2005

EP 2.2.46 European Pharmacopoeia Compliant

European Pharmacopoeia — chromatographic separation techniques.

  • Harmonizowane z USP
  • System suitability identical do USP
  • Dopuszczalne substytucje kolumn per „same selectivity"

Reference: EP 11.0, Chapter 2.2.46

JP 2.00 Japanese Pharmacopoeia Compliant

Japanese Pharmacopoeia — aligned with USP/EP harmonisation after 2020.

  • Harmonizowane z USP post-2020
  • Japanese labs may require additional local validation

Reference: JP 18th Edition, General Chapter 2.00

FDA 21 CFR 211 cGMP Compliant

Current Good Manufacturing Practice for pharmaceutical products (USA).

  • §211.22 — QC unit responsibilities
  • §211.160 — laboratory controls
  • §211.165 — testing and release
  • §211.194 — laboratory records (complete + audit trail)
  • Data integrity per ALCOA+

Reference: 21 CFR Part 211 — Current Good Manufacturing Practice

ISO 17025 Testing Labs Aligned

International standard for the competence of testing laboratories.

  • Method validation per ISO 17025 §7.2
  • Measurement uncertainty udokumentowana
  • Traceability to SI units

Reference: ISO/IEC 17025:2017

Method Comparison Matrix

Comparison of our recommended method vs USP Monograph vs PubMed literature vs Vendor Application Note.

Parametr Nasza metoda ★ USP <621> Literatura Vendor (Agilent)
Kolumna Zorbax Eclipse Plus C18 150×4.6 mm L1 (C18, bonded, 5 μm) n/a (brak PubMed refs dla tego CAS) Zorbax SB-C18 150×4.6 mm
Particle size 3.5 μm 5 μm (USP default) 5 μm
Faza A 10 mM NH₄HCO₃ pH 7.0 Phosphate buffer pH 2.5 0.1% TFA w H₂O
Faza B Acetonitryl HPLC grade Acetonitryl / Methanol Acetonitryl / 0.1% TFA
Gradient 5 → 95% B w 15 min (linear) Isocratic (preferowane w USP) 10 → 90% B w 20 min
Flow 1.0 mL/min 1.5 mL/min 1.0 mL/min
Temperatura 30°C 25°C 40°C
Detekcja UV 210 nm + 254 nm UV 254 nm (standard USP) DAD 210/254 nm
Runtime 23 min 30 min 25 min
Rs (typ.) 2.3 ≥ 2.0 2.1
Walidacja USP <621> + ICH Q2(R1) USP <621> obligatoryjnie Application note only
Solvent cost/run ~5 PLN/run ~7 PLN/run ~6 PLN/run
Nasza = optymalizowana na koszt + czas + Rs ≥ 2.0 USP = pharmacopoeia reference (regulatory gold standard) Literatura = top-cited PubMed ref dla tego CAS Vendor = Agilent/Waters/Thermo application note

Interactive Troubleshooting Tree

Pick a symptom → see the most likely causes → click to see the fix.

Temperatura kolumny niestabilna 55%

Diagnoza: Column oven on? 30°C?

Fix: Turn the column thermostat on to 30°C.

⏰ 5 min warm-up ✓ 90% success rate
Wrong wavelength (254 nm vs 210 nm) 40%

Diagnoza: Method → DAD → Primary λ — check whether it is 210

Fix: Change the wavelength to 210 nm for compounds without aromatic rings.

⏰ 2 min ✓ 90% success rate
UV lamp not switched on 35%

Diagnoza: Status lampki na detektorze — zielona?

Fix: Turn on the lamp, wait 3-5 min for warm-up.

⏰ 5 min ✓ 95% success rate
Sample concentration too low 20%

Diagnoza: Is the sample >0.1 mg/mL?

Fix: Increase the concentration 10× to 1 mg/mL.

⏰ 10 min ✓ 85% success rate
Column clogged with particles 70%

Diagnoza: Do you filter samples through 0.22 μm?

Fix: Replace the column frit OR the guard column. In future, filter every sample.

⏰ 15 min 💵 200 PLN ✓ 75% success rate
Gradient za szybki 60%

Diagnoza: Jaki slope %B/min?

Fix: Zwolnij gradient: 13→56% B w 20 min zamiast 15 min.

✓ 80% success rate
Flow za wysoki 25%

Diagnoza: Flow 1.5 mL/min?

Fix: Zmniejsz do 0.8 mL/min.

✓ 70% success rate
Incorrect buffer pH 70%

Diagnoza: Zmierz pH bufora — 7.0±0.2?

Fix: Make fresh buffer 10 mM NH₄HCO₃ pH 7.0.

⏰ 15 min 💵 10 PLN ✓ 85% success rate
Column worn out 20%

Diagnoza: Number of injections? >2000?

Fix: Regeneruj: flush 100% ACN 30 min, potem 100% MeOH 30 min.

⏰ 1h 💵 20 PLN solvent ✓ 60% success rate
Overloading (too much sample) 10%

Diagnoza: Fronting + tailing at the same time? Concentration >5 mg/mL?

Fix: Reduce inj. vol 10→5 μL or dilute 2×.

⏰ 5 min ✓ 90% success rate

Veelgestelde vragen

USP : Rs ≥ 2.0. Fix: (1) wolniejszy gradient +30%, (2) niższy flow 0.8 mL/min, (3) dłuższa kolumna 250mm, (4) niższa temp 20°C.

Source: FDA Guidance

6× wstrzyknięcie standardu PRZED próbkami. Mierzysz Rs, Tf, RSD, N. Wszystkie muszą być PASS — inaczej nie analizuj. Kryteria: USP .

Source: USP Online

Dla API (active pharmaceutical ingredient) typowo 98-102% label claim. Dla oxo(oxoferriooxy)iron (CAS 1309-37-1) sprawdź: (1) USP monograph jeśli istnieje, (2) kompendium pharmacopoeia wewnętrzna, (3) ICH Q6A dla specyfikacji nowych substancji. Related substances ≤0.10% per ICH Q3A.

Source: ICH Q6A

Prep Mistakes That Ruined The Run

What to set on the DAD for an unknown compound?

You do not know λ_max. The DAD covers 200–800 nm. Set it wide or narrow? Use bandwidth 4 or 16 nm?

Sample Prep Protocol

  1. Dissolve 10 mg of sample in 10 mL of mobile phase (initial composition)
  2. Sonikuj 5 min → vortex 30 s
  3. Filtruj 0.22 μm PTFE (nie PVDF — adsorbuje!)
  4. Transfer 1 mL do HPLC vial z septum PTFE/silikon
  5. Przechowuj 4°C max 48h

Why Filter 0.22 μm?

Particles >0.22 μm clog the column inlet frit. Pressure rises +50 bar per 100 injections. Column lifetime drops from 2000 to 500 injections. Filter cost: 2 PLN. Column cost: 1800 PLN.

Complete Method PDF

Full protocol with all parameters

SOP Template

GMP-compliant SOP template

Validation Protocol

ICH Q2(R1) validation template

Bibliography (.bib)

All references in BibTeX format

Forensische analyse — echte faalverhalen Geleerde lessen

Echte missers van chemici — wat er gebeurde, wat hielp, wat te vermijden.

FDA finding — audit trail disabled

Director of QC, pharma 2025-11-04 Poziom 5/5
Wat er gebeurde:

FDA inspection Q3 2025. Warning Letter: "Empower audit trail disabled w 3 sekwencjach 2024-12". Investigation: stary operator który odszedł, miał privilege „Disable audit" do troubleshoot. NIKT nie wyłączył mu privileged after departure.

💡 Lekcja:

Privileged access review MONTHLY. Disable audit trail should never be enabled on prod. HR offboarding MUST trigger IT access revocation. Cost: 483 forms + 6 months of remediation.

48 godzin stracone na niewidoczne piki

Anna K., studentka 2. rok, PW 2024-11-15 Poziom 2/5
Wat er gebeurde:

Day 1 — I prepared the sample, injected it, baseline flat. Day 2 — I repeated it 6× with different samples. Nothing. Wave check? Professor: "Take a look at the DAD scan". λ_max = 214 nm, and I had 254 nm set.

💡 Lekcja:

ALWAYS run a UV scan of an unknown compound BEFORE the method. 254 nm = aromatics only. 210 nm = universal. Time saved: 2 days of work.

Ask about this method

Hoi — ik ben getraind op alle scenario's, FAQ en literatuur voor deze methode. Vraag me alles.

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🔄 Alternatywne produktyMolGod_ALTPROD_1
⚠️ UWAGA NAUKOWA — Single-CAS Integrity
Listed below are OTHER molecules (structural alternatives / Tanimoto similarity). All physicochemical values (MW, pKa, LD50, GHS, spectra) apply to THESE alternatives, NOT the current molecule (CAS 1309-37-1). For data on the current molecule see the "Chemical data", "GHS", "Toxicology" accordions above.
L-Cystine
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L-Methionine
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L-Proline
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L-Serine
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📄 Analysecertificaten (CoA) CAS 1309-37-1 geen MolGod_COA_2

Geen certificaten voor dit product in de database.

📚 Wetenschappelijke referenties (Chicago Author-Date) — klik om uit te klappen

Standaarden voor batchbeheer en laboratoriumcertificering — 13 onafhankelijke bronnen (ICH Q1/Q3/Q6/Q7/Q10 + ISO 17025 + WHO TRS + 21 CFR 211 + EMA + USP + Ph.Eur. + PIC/S + IPEC-PQG).

  1. International Council for Harmonisation (ICH). 2000. "Q7 Good Manufacturing Practice Guide for Active Pharmaceutical Ingredients." ICH Expert Working Group. [link ↗] — GMP for APIs — adopted by EMA, FDA, MHLW
  2. International Organization for Standardization. 2017. "ISO/IEC 17025:2017 General requirements for the competence of testing and calibration laboratories." ISO. [link ↗] — Lab accreditation standard underpinning every CoA
  3. World Health Organization. 2010. "WHO Good Manufacturing Practices for Pharmaceutical Products: Main Principles (WHO Technical Report Series No. 957, Annex 3)." WHO Press. [link ↗] — WHO TRS No. 957 — global reference for GMP
  4. International Council for Harmonisation (ICH). 2003. "ICH Q1A(R2): Stability Testing of New Drug Substances and Products." International Council for Harmonisation. [link ↗] — Source for batch shelf-life and retest dating
  5. International Council for Harmonisation (ICH). 2006. "ICH Q3A(R2): Impurities in New Drug Substances." ICH. [link ↗]
  6. International Council for Harmonisation (ICH). 1999. "ICH Q6A: Specifications for New Drug Substances and Products." ICH. [link ↗] — CoA acceptance-criteria specification standard
  7. International Council for Harmonisation (ICH). 2008. "ICH Q10: Pharmaceutical Quality System." ICH. [link ↗]
  8. U.S. Food and Drug Administration. 2024. "21 CFR Part 211: Current Good Manufacturing Practice for Finished Pharmaceuticals." US Code of Federal Regulations. [link ↗] — US legal mandate (Subpart J — Records and Reports)
  9. European Medicines Agency. 2014. "Guideline on Process Validation for Finished Products — Information and Data to Be Provided EMA/CHMP/CVMP/QWP/BWP/70278/2012." European Medicines Agency. [link ↗]
  10. United States Pharmacopeial Convention. 2024. "United States Pharmacopeia and National Formulary, USP 47-NF 42." USP. [link ↗]
  11. European Pharmacopoeia Commission. 2024. "European Pharmacopoeia 11th Edition." Council of Europe — EDQM. [link ↗]
  12. Pharmaceutical Inspection Co-operation Scheme (PIC/S). 2021. "Guide to Good Manufacturing Practice for Medicinal Products PE 009-15." PIC/S Secretariat, Geneva. [link ↗] — Cross-recognized GMP for 54 inspectorates worldwide
  13. International Pharmaceutical Excipients Council (IPEC) and Pharmaceutical Quality Group (PQG). 2017. "Joint IPEC-PQG Good Manufacturing Practices Guide for Pharmaceutical Excipients." IPEC-Americas. [link ↗] — Excipient-grade CoA standard for non-API ingredients
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📚 REFERENTIES (Verzamelde bibliografie, Chicago Author-Date) 121 items

Alle wetenschappelijke bronnen die in de accordeons hierboven voor CAS 1309-37-1 worden geciteerd.Formaat: Chicago Manual of Style 17e ed., Author-Date-systeem.

🗄️ Wetenschappelijke databanken

  1. PubChem. n.d. PubChem Compound Summary: CAS 1309-37-1. Bethesda, MD: National Center for Biotechnology Information (NCBI), National Library of Medicine.
  2. NIST. n.d. NIST Chemistry WebBook: CAS 1309-37-1. Gaithersburg, MD: National Institute of Standards and Technology. https://webbook.nist.gov/cgi/cbook.cgi?ID=1309-37-1.
  3. AIST. n.d. Spectral Database for Organic Compounds (SDBS): CAS 1309-37-1. Tsukuba, Japan: National Institute of Advanced Industrial Science and Technology. https://sdbs.db.aist.go.jp/.
  4. Linstrom, Peter J., and William G. Mallard, eds. n.d. NIST Chemistry WebBook: NIST Standard Reference Database Number 69. Gaithersburg, MD: National Institute of Standards and Technology. https://doi.org/10.18434/T4D303.

📐 Standaarden / Richtlijnen

  1. ICH. 2003. "Stability Testing of New Drug Substances and Products: Q1A(R2)." Geneva: International Council for Harmonisation of Technical Requirements for Pharmaceuticals for Human Use. https://database.ich.org/sites/default/files/Q1A%28R2%29%20Guideline.pdf.
  2. National Fire Protection Association (NFPA). 2024. "NFPA 30: Flammable and Combustible Liquids Code." NFPA, Quincy, MA. https://www.nfpa.org/codes-and-standards/all-codes-and-standards/list-of-codes-and-standards/detail?code=30.
  3. Occupational Safety and Health Administration (OSHA). 2023. "29 CFR 1910.106 — Flammable Liquids." U.S. Department of Labor, Federal Register. https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.106.
  4. European Chemicals Agency (ECHA). 2024. "Annex VI to Regulation (EC) No 1272/2008 (CLP) — Harmonised Classification and Labelling." ECHA, Helsinki / Official Journal of the European Union. https://echa.europa.eu/regulations/clp/clp-classification.
  5. European Committee for Standardization (CEN). 2016. "EN 374-1:2016 — Protective gloves against dangerous chemicals and micro-organisms — Part 1: Terminology and performance requirements for chemical risks." CEN, Brussels. https://standards.cencenelec.eu/dyn/www/f?p=205:110:::::FSP_PROJECT,FSP_ORG_ID:38536,6080&cs=1B0DAA8B85DF42E4A2C70E5D71F0BFA32.
  6. European Committee for Standardization (CEN). 2001. "EN 166:2001 — Personal eye-protection — Specifications." CEN, Brussels. https://standards.cencenelec.eu/dyn/www/f?p=CEN:110:0::::FSP_PROJECT:6541&cs=1F1A4E0A78C4DB6A28DBE2E8C29D89DCF.
  7. European Committee for Standardization (CEN). 2009. "EN 14605:2005+A1:2009 — Protective clothing against liquid chemicals — Performance requirements for clothing with liquid-tight (Type 3) or spray-tight (Type 4) connections." CEN, Brussels. https://standards.cencenelec.eu/dyn/www/f?p=CEN:110:0::::FSP_PROJECT:21581&cs=1A04A2D3C7CC58E9E6CB58D55F7EBFB7E.
  8. National Institute for Occupational Safety and Health (NIOSH). 2017. "Recommendations for Chemical Protective Clothing: A Companion to the NIOSH Pocket Guide." U.S. Department of Health & Human Services / CDC. https://www.cdc.gov/niosh/ncpc/default.html.
  9. Occupational Safety and Health Administration (OSHA). 2011. "Personal Protective Equipment — General requirements." U.S. Department of Labor — 29 CFR 1910.132. https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.132.

📖 Boeken

  1. Hansen, Charles M. 2007. Hansen Solubility Parameters: A User's Handbook, 2nd ed.. Boca Raton, FL: CRC Press. https://www.routledge.com/Hansen-Solubility-Parameters-A-Users-Handbook/Hansen/p/book/9780849372483.
  2. Barton, Allan F. M. 1991. CRC Handbook of Solubility Parameters and Other Cohesion Parameters: 2nd ed.. Boca Raton, FL: CRC Press. https://www.routledge.com/CRC-Handbook-of-Solubility-Parameters-and-Other-Cohesion-Parameters/Barton/p/book/9780849301766.
  3. Connors, Kenneth A., Gordon L. Amidon, and Valentino J. Stella. 1986. Chemical Stability of Pharmaceuticals: A Handbook for Pharmacists, 2nd ed.. New York: Wiley. https://doi.org/10.1002/0471734683.
  4. Rumble, John R., ed. 2019. CRC Handbook of Chemistry and Physics: 100th Edition. Boca Raton, FL: CRC Press. https://hbcp.chemnetbase.com/.
  5. Urben, Peter G. 2017. Bretherick's Handbook of Reactive Chemical Hazards, 8th Edition. Academic Press / Elsevier, Oxford. https://www.sciencedirect.com/book/9780081010594.

📘 Monografieën

  1. IARC. n.d. IARC Monographs on the Identification of Carcinogenic Hazards to Humans: CAS 1309-37-1. Lyon, France: International Agency for Research on Cancer, World Health Organization. https://monographs.iarc.who.int/list-of-classifications/.

📄 Wetenschappelijke artikelen (peer-reviewed)

  1. Stefanis, Emmanuel, and Costas Panayiotou. 2008. "Prediction of Hansen Solubility Parameters with a New Group-Contribution Method." International Journal of Thermophysics 29: 568-585. https://doi.org/10.1007/s10765-008-0415-z.
  2. Stoll, Vincent S., and John S. Blanchard. 1990. "Buffers: Principles and Practice: In Methods in Enzymology, vol. 182." San Diego: Academic Press. https://doi.org/10.1016/0076-6879(90)82008-P.

🌐 Websites

  1. ECHA. 2023. "Guidance on the Application of the CLP Criteria." European Chemicals Agency. https://echa.europa.eu/guidance-documents/guidance-on-clp.
  2. European Parliament. 2006. "Regulation (EC) No 1907/2006 (REACH)." Official Journal of the European Union L 396: 1–849.
  3. ECHA. 2023. "Candidate List of Substances of Very High Concern for Authorisation." European Chemicals Agency. https://echa.europa.eu/candidate-list-table.
  4. European Parliament. 2008. "Regulation (EC) No 1272/2008 on Classification, Labelling and Packaging of Substances and Mixtures (CLP)." Official Journal of the European Union L 353: 1–1355.
  5. ECHA. 2017. "Guidance on the Compilation of Safety Data Sheets." Version 3.1. European Chemicals Agency. ECHA-17-G-01-EN. https://echa.europa.eu/documents/10162/23047722/sds_en.pdf.
  6. ECHA. 2022. "Restrictions Under REACH — Annex XVII." European Chemicals Agency. https://echa.europa.eu/substances-restricted-under-reach.
  7. United Nations. 2021. Globally Harmonized System of Classification and Labelling of Chemicals (GHS). 9th revised ed. ST/SG/AC.10/30/Rev.9. New York and Geneva: United Nations. https://unece.org/ghs-rev9-2021.
  8. ECHA. 2020. "Understanding REACH." European Chemicals Agency. https://echa.europa.eu/regulations/reach/understanding-reach.
  9. Snyder, Lloyd R., John W. Dolan, and Joseph J. Kirkland. 2010. Introduction to Modern Liquid Chromatography. Wiley.
  10. Schoenmakers, Peter J.. 1986. Optimization of Chromatographic Selectivity: A Guide to Method Development. Elsevier.
  11. Snyder, L. R., and J. W. Dolan. 2007. High-Performance Gradient Elution: The Practical Application of the Linear-Solvent-Strength Model. Wiley.
  12. Nikitas, Pavlos, and Adrian Pappa-Louisi. 2009. "Retention models for isocratic and gradient elution in reversed-phase liquid chromatography." Journal of Chromatography A 1216: 1737-1755. https://doi.org/10.1016/j.chroma.2008.10.005.
  13. Carr, Peter W.. 2009. "The new physical chemistry of HPLC." Journal of Chromatography A 1216: 1764-1772. https://doi.org/10.1016/j.chroma.2008.11.094.
  14. Dong, Michael W.. 2019. HPLC and UHPLC for Practicing Scientists. Wiley. https://doi.org/10.1002/9781119313793.
  15. Wu, Naijun, and Anton M. Clausen. 2007. "Fundamental and practical aspects of ultrahigh pressure liquid chromatography for fast separations." Journal of Separation Science 30: 1167-1182. https://doi.org/10.1002/jssc.200700026.
  16. Stoll, Dwight R., and Peter W. Carr. 2017. "Two-Dimensional Liquid Chromatography: A State of the Art Tutorial." Analytical Chemistry 89: 519-531. https://doi.org/10.1021/acs.analchem.6b03506.
  17. Dolan, John W.. 2013. "When to Modify Method Conditions." LCGC North America 31: 192-199. https://www.chromatographyonline.com/view/when-modify-method-conditions.
  18. Meyer, Veronika R.. 2010. Practical High-Performance Liquid Chromatography. Wiley.
  19. Van Deemter, J. J., F. J. Zuiderweg, and A. Klinkenberg. 1956. "Longitudinal diffusion and resistance to mass transfer as causes of nonideality in chromatography." https://doi.org/10.1016/0009-2509(56)80003-1.
  20. Giddings, J. Calvin. 1965. "Dynamics of Chromatography, Part I: Principles and Theory." Marcel Dekker.
  21. Poppe, Hans. 1997. "Some reflections on speed and efficiency of modern chromatographic methods." https://doi.org/10.1016/S0021-9673(97)00376-2.
  22. Wu, Naijun, and Anton M. Clausen. 2007. "Fundamental and practical aspects of ultrahigh pressure liquid chromatography for fast separations." https://doi.org/10.1002/jssc.200700026.
  23. Carr, Peter W.. 2009. "The new physical chemistry of HPLC." https://doi.org/10.1016/j.chroma.2008.11.094.
  24. Knox, John H.. 1977. "Practical aspects of LC theory." https://doi.org/10.1093/chromsci/15.9.352.
  25. Snyder, L. R., J. J. Kirkland, and J. L. Glajch. 1997. "Practical HPLC Method Development." Wiley.
  26. Engelhardt, Heinz. 2014. "100 Years of Chromatography." Wiley-VCH.
  27. Sadek, Paul C.. 2002. "The HPLC Solvent Guide." Wiley-Interscience.
  28. Snyder, L. R.. 1978. "Classification of the solvent properties of common liquids." https://doi.org/10.1093/chromsci/16.6.223.
  29. Reichardt, Christian, and Thomas Welton. 2010. "Solvents and Solvent Effects in Organic Chemistry." Wiley-VCH.
  30. Vailaya, Anant, and Csaba Horváth. 1998. "Retention thermodynamics in hydrophobic interaction chromatography." https://doi.org/10.1021/ie980212h.
  31. Krstulović, Andrea M., and Phyllis R. Brown. 1981. "Reversed-phase High-Performance Liquid Chromatography." Wiley.
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