Does BMA mean n-butyl methacrylate or isobutyl methacrylate?

In most commercial usage the bare abbreviation means the normal isomer, n-butyl methacrylate, CAS 97-88-1. The branched isomer, isobutyl methacrylate, is a different substance with its own identifiers and a different contribution to copolymer hardness, and the tertiary isomer is different again. Because all three are abbreviated loosely in day-to-day correspondence, an order written as BMA alone is ambiguous. Write the full chemical name and the CAS number on every enquiry, purchase order and goods-inwards record.

Why must the monomer not be blanketed with pure nitrogen?

Because the stabiliser used in commercial methacrylate monomers requires dissolved oxygen to function. It intercepts radicals by a mechanism that consumes oxygen, so a drum stripped of oxygen contains an inhibitor that is chemically present and functionally absent. The correct headspace is air, or air diluted with nitrogen to a specified oxygen content, never an inert blanket. This is one of the very few cases in a chemical store where displacing oxygen makes a material more dangerous rather than less, and it catches people whose instinct is trained on flammable solvents.

How should inhibitor content be read on a certificate?

As a starting condition rather than a permanent property. The certificate reports the inhibitor level at release; that level falls in storage as the stabiliser does its job, and it falls faster in warm conditions, in light and in the presence of contamination. A long-stored drum can meet its original certificate on every other line while having very little inhibitor left. Where storage has been long or uncertain, retest the inhibitor level before charging a reactor rather than relying on the release figure.

What is popcorn polymerisation and why does it matter here?

It is a self-propagating, expanding polymer growth that forms in dead legs, vapour spaces, valve bonnets and residues where inhibitor cannot reach. Once seeded it continues under conditions that would not start a normal polymerisation, and it grows mechanically enough to jam valves and distort equipment. The controls are housekeeping controls: no unswept dead legs, no long-standing residues, no lines left full between campaigns, and clean vessels before refilling. It is not a reason to avoid methacrylate monomers, but it is a reason to design the pipework as if the monomer were reactive, because it is.

How does the butyl ester change a copolymer compared with the methyl one?

The four-carbon ester side chain is flexible and bulky, so it loosens chain packing and lowers the temperature at which the polymer softens. Against the methyl ester it gives a softer, more flexible and more extensible polymer, better adhesion and easier film formation, at the cost of hardness and block resistance. Against the corresponding acrylate it gives a harder polymer with the weathering advantage of the methacrylate backbone. Formulators use it as the soft component of an all-methacrylate system, which keeps the durability while tuning flexibility.

N-Heptane ist eine chemische Verbindung, registriert unter der CAS-Nummer 142-82-5. Summenformel: C7H16. Molmasse: 100.20 g/mol. IUPAC: heptane.

Wie lautet die CAS-Nummer von N-Heptane?

Die CAS-Nummer von N-Heptane ist 142-82-5 — eine eindeutige Kennung des Chemical Abstracts Service (CAS).

Wie lautet die Summenformel von N-Heptane?

Summenformel: C7H16. Molmasse: 100.20 g/mol. logP (XLogP3): 4.4. PSA: 0 Å².

Welche GHS-Gefahren hat N-Heptane?

Gemäß der GHS-Klassifizierung muss N-Heptane mit den folgenden Gefahrenhinweisen gekennzeichnet werden: H225 (Flüssigkeit und Dampf leicht entzündbar.), H304 (Kann bei Verschlucken und Eindringen in die Atemwege tödlich sein.), H336 (Kann Schläfrigkeit und Benommenheit verursachen.), H315 (Verursacht Hautreizungen.), H400 (Sehr giftig für Wasserorganismen.).

Wo kann ich N-Heptane kaufen?

N-Heptane ist in unserem Shop erhältlich. Produkt ansehen: https://epchems.online/products/n-heptane/

Woher stammen die chemischen Daten für N-Heptane?

Die chemischen Daten für N-Heptane stammen aus zuverlässigen Quellen: PubChem (NIH), ChEMBL (EBI). PubChem CID: 8900. Konform mit der CLP-Verordnung (EG 1272/2008), verfügbar unter der Lizenz CC-BY 4.0.

N-Heptane

Heptane

CAS 142-82-5 · C₇H₁₆ · MW 100.20 g/mol

Über N-Heptane

N-Heptane ist eine chemische Verbindung, registriert unter der Nummer CAS 142-82-5, mit der Summenformel C₇H₁₆, und einer Molmasse von 100.20 g/mol.

Das Molekül enthält 23 Atome, verbunden durch 22 chemische Bindungen. Der vollständige systematische IUPAC-Name dieser Verbindung lautet heptane. Das interaktive 3D-Modell oben zeigt die räumliche Anordnung der Atome — Sie können es mit der Maus drehen, mit dem Scrollrad zoomen und zwischen den Darstellungsmodi Skelett / Ball & Stick / Space Fill wechseln.

Hinsichtlich der physikalisch-chemischen Eigenschaften der Verteilungskoeffizient logP = 4.4 (positiver Wert, lipophile Verbindung), polare Oberfläche PSA = 0 Å², 0 Donatoren und 0 Wasserstoffbrücken-Akzeptoren. Diese Parameter sind entscheidend für die Beurteilung der Bioverfügbarkeit und der Wechselwirkung mit Biomolekülen.

Die chemischen Daten für diese Verbindung stammen aus PubChem (NIH NLM NCBI), einer der größten chemischen Datenbanken der Welt. Alle Informationen werden automatisch aktualisiert und um GHS-Gefahrenhinweise gemäß der CLP-Verordnung (EG 1272/2008) ergänzt. Das obige Widget darf für Bildungs-, Forschungs- und kommerzielle Zwecke verwendet werden.

Physikalisch-chemische Eigenschaften

Wzór sumaryczny	C₇H₁₆
Masa molowa	100.20 g/mol
IUPAC	heptane
SMILES	`CCCCCCC`
InChIKey	`IMNFDUFMRHMDMM-UHFFFAOYSA-N`
logP (XLogP3)	4.4
PSA	0 Å²
HBD / HBA	0 / 0
PubChem CID	CID 8900 ↗

GHS-Sicherheit

Sygnał: Niebezpieczeństwo

GHS02

GHS07

GHS08

GHS09

H225 — Wysoce łatwopalna ciecz i pary

H304 — Połknięcie i dostanie się przez drogi oddechowe może grozić śmiercią

H336 — Może wywoływać uczucie senności lub zawroty głowy

H315 — Działa drażniąco na skórę

H400 — Działa bardzo toksycznie na organizmy wodne

H410 — Działa bardzo toksycznie na organizmy wodne, powodując długotrwałe skutki

Wissenschaftliche Literatur

Literatura naukowa

20 artykułów · 13 open access · Źródła: PubMed, OpenAlex, Semantic Scholar

📈 Timeline publikacji (20 artykułów)

Wysokość słupka = liczba artykułów w roku. Hover dla szczegółów.

🔓

Selective P450BM3 Hydroxylation of the Spiro[3.3]heptane Core as a Route to Potential Drug Fragment Molecules.

et al. (2025)

Cytowania: 3Open AccessDOI ↗PubMed ↗PDF ↗

Development of Indolo-Bicyclo[3.1.1]Heptane as a Carbazole Isostere Through Radical Indolization of Bicyclo[1.1.0]Butanes.

et al. (2025)

Cytowania: 4$ PaywallDOI ↗PubMed ↗

🔓

3-Oxabicyclo[3.1.1]heptane as an Isostere of meta-Benzene.

Dibchak D, Mykhailiuk PK (2025) · Angewandte Chemie (International ed. in English)

Cytowania: 11Open AccessDOI ↗PubMed ↗PDF ↗

🔓

A Novel Class of "Super-Strained" Spiro Heterocycles: Gateway to 1-Azaspiro[3.3]heptane Derivatives, and Biological Validation.

et al. (2026)

Open AccessDOI ↗PubMed ↗PDF ↗

🔓

Synthesis of 1,3-Disubstituted 3-Azabicyclo[3.2.0]heptane Libraries for Fragment-Based Drug Discovery.

et al. (2026)

Open AccessDOI ↗PubMed ↗PDF ↗

🔓

Understanding the Reactivity of N-Heptane Blended with Ethanol or Ethyl Acetate.

et al. (2025)

Open AccessDOI ↗PubMed ↗PDF ↗

🔓

2,5-Diazabicyclo[2.2.1]heptane in medicinal chemistry: a treasure trove of therapeutic opportunities.

et al. (2026)

Open AccessDOI ↗PubMed ↗PDF ↗

🔓

Computational Access to 1,3,5,6,7-Pentanitro-3,6,7-Triazabicyclo-[3.1.1]-Heptane (UIX): A Powerful Potential Explosive with Zero Oxygen Balance.

(2025)

Open AccessDOI ↗PubMed ↗PDF ↗

🔓

Effect of oxygenated ferrocene derivatives on soot formation and nanoparticle emissions in n-heptane diffusion flames.

et al. (2026)

Open AccessDOI ↗PubMed ↗PDF ↗

🔓

High-Pressure Density Measurements and Modeling of Hydrocarbons: 1-Hexene, 2, 4-Dimethylhexane, 2,2,4-Trimethylpentane, and n-Heptane.

et al. (2026)

Open AccessDOI ↗PubMed ↗PDF ↗

🔓

Atmospheric Pressure Corona Discharge Ionization of n-Heptane (I): Formation of the Molecular Ion M+• and Dehydrogenated Ions [M - 2H]+• and [M - nH]+ (n = 1, 3, 5).

et al. (2026)

Open AccessDOI ↗PubMed ↗PDF ↗

🔓

Thermodynamics of mixtures containing amines. XVII. Excess molar enthalpy and volume measurements for benzylamine + heptane or + 1-alkanol mixtures at 298.15 K. Application of the DISQUAC and ERAS models

Luis Felipe Sanz, Juan Antonio González, Fernando Hevia et al. (2024) · arXiv (2410.00799v1)

Open AccessDOI ↗PDF ↗

🔓

Experimental and Computational Investigation of the Influence of Ethanol on Auto-ignition of n-Heptane in Non-Premixed Flows

Liang Ji, Kalyanasundaram Seshadri, Forman A. Williams (2024) · arXiv (2406.08507v1)

Open AccessPDF ↗

🔓

Microfluidic generation of monodisperse ultra-low interfacial tension oil droplets in water†

Guido Bolognesi, Alex Hargreaves, Andrew D. Ward et al. (2014) · RSC Advances

Cytowania: 28Open AccessDOI ↗PDF ↗

Three-Component Difluoroalkylative Alkynylation of [3.1.1]Propellane Enables Modular Bicyclo[3.1.1]heptane Synthesis.

et al. (2026)

$ PaywallDOI ↗PubMed ↗

Recent Advances in the Synthesis of Bicyclo[4.1.0]Heptane Scaffolds.

(2025)

$ PaywallDOI ↗PubMed ↗

Field Ionization Mass Spectrometric and Quantum Chemical Analysis of Alkyl Fragment Ions Produced by Field Dissociation of n-Heptane, 2-Methyl Hexane, and 2-Methyl Heptane.

(2025)

$ PaywallDOI ↗PubMed ↗

Novel oxabicyclo[2.2.1]heptane-3-one derivatives with NO inhibitory and cytotoxic activities, and xanthone derivatives from the endolichenic fungus Exophiala sp.

et al. (2025)

$ PaywallDOI ↗PubMed ↗

Auto-ignition characteristics and kinetic modeling study of PODE3/n-heptane blends

et al. (2025)

$ Paywall

Diffusion coefficients in hydrocarbon systems: n‐heptane in the gas phase of the ethane–n‐heptane and propane–n‐heptane systems

L. T. Carmichael, B. H. Sage (1956) · AIChE Journal

Cytowania: 3$ PaywallDOI ↗

Dane z PubMed (NIH NLM), OpenAlex (CC0), Semantic Scholar (AI2). AI Summary wygenerowane przez Semantic Scholar TLDR. Artykuły z ikoną wymagają płatnego dostępu.

Synonyme

HEPTANE · n-Heptane · 142-82-5 · Heptan · Heptyl hydride · Dipropyl methane · Dipropylmethane · Gettysolve-C · Skellysolve C · Heptanen · Eptani · 456148SDMJ · NSC-62784 · DTXCID004127 · CHEBI:43098

Datenquellen

📊 PubChem CID 8900 — NIH
🔬 NIST WebBook — spektroskopia
🌐 Wikidata
💊 ChEMBL — bioaktywność

Im Shop kaufen

N-Heptane →

Verwandte Moleküle

Butyl acetate (BTAC) CAS 123-86-4 · C6H12O2 Dimethyl Sulfoxide CAS 67-68-5 · C2H6OS Iron oxide black CAS 12227-89-3 · Fe₃O₄ Tripropylene glycol CAS 24800-44-0 · C9H20O4 Diethylene glycol dimethyl ether CAS 110-71-4 · C4H10O2 Iron oxide red CAS 1309-37-1 · Fe₂O₃