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.

Salicylzuur is een chemische verbinding, geregistreerd onder CAS-nummer 69-72-7. Brutoformule: C7H6O3. Molaire massa: 138.12 g/mol. IUPAC: 2-hydroxybenzoic acid.

Wat is het CAS-nummer van Salicylzuur?

Het CAS-nummer van Salicylzuur is 69-72-7 — een unieke identificatie van de Chemical Abstracts Service (CAS).

Wat is de brutoformule van Salicylzuur?

Brutoformule: C7H6O3. Molaire massa: 138.12 g/mol. logP (XLogP3): 2.3. PSA: 57.5 Å².

Wat zijn de GHS-gevaren van Salicylzuur?

Volgens de GHS-classificatie moet Salicylzuur worden voorzien van de volgende gevarenaanduidingen: H361d (Podejrzewa się, że działa szkodliwie na dziecko w łonie matki), H302 (Schadelijk bij inslikken.), H318 (Veroorzaakt ernstig oogletsel.).

Waar kan ik Salicylzuur kopen?

Salicylzuur is verkrijgbaar in onze winkel. Bekijk het product: https://epchems.online/products/salicylic-acid/

Waar komen de chemische gegevens voor Salicylzuur vandaan?

De chemische gegevens voor Salicylzuur zijn afkomstig van gezaghebbende bronnen: PubChem (NIH), ChEMBL (EBI). PubChem CID: 338. Conform de CLP-verordening (EG 1272/2008), beschikbaar onder de CC-BY 4.0-licentie.

Salicylzuur

CAS 69-72-7 · C₇H₆O₃ · MW 138.12 g/mol

Over Salicylzuur

Salicylzuur is een chemische verbinding, geregistreerd onder nummer CAS 69-72-7, met de brutoformule C₇H₆O₃, en een molaire massa van 138.12 g/mol.

Het molecuul bevat 16 atomen verbonden door 16 chemische bindingen. De volledige systematische IUPAC-naam van deze verbinding is 2-hydroxybenzoic acid. Het interactieve 3D-model hierboven toont de ruimtelijke rangschikking van de atomen — u kunt het met de muis draaien, met het scrollwiel inzoomen en schakelen tussen de weergavemodi skelet / Ball & Stick / Space Fill.

Wat de fysisch-chemische eigenschappen betreft, de verdelingscoëfficiënt logP = 2.3 (positieve waarde, lipofiele verbinding), polair oppervlak PSA = 57.5 Å², 2 donoren en 3 waterstofbrugacceptoren. Deze parameters zijn cruciaal bij de beoordeling van de biobeschikbaarheid en de interactie met biomoleculen.

De chemische gegevens voor deze verbinding zijn afkomstig van PubChem (NIH NLM NCBI), een van de grootste chemische databanken ter wereld. Alle informatie wordt automatisch bijgewerkt en verrijkt met vertalingen van GHS-gevarenaanduidingen conform de CLP-verordening (EG 1272/2008). De bovenstaande widget mag worden gebruikt voor educatieve, onderzoeks- en commerciële doeleinden.

Fysisch-chemische eigenschappen

Wzór sumaryczny	C₇H₆O₃
Masa molowa	138.12 g/mol
IUPAC	2-hydroxybenzoic acid
SMILES	`C1=CC=C(C(=C1)C(=O)O)O`
InChIKey	`YGSDEFSMJLZEOE-UHFFFAOYSA-N`
logP (XLogP3)	2.3
PSA	57.5 Å²
HBD / HBA	2 / 3
PubChem CID	CID 338 ↗

GHS-veiligheid

Sygnał: Niebezpieczeństwo

GHS05

GHS07

GHS08

? — H361d

H302 — Działa szkodliwie po połknięciu

H318 — Powoduje poważne uszkodzenie oczu

Wetenschappelijke literatuur

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.

RIFM fragrance ingredient safety assessment, 2-hydroxybenzoic acid, CAS Registry Number 69-72-7.

et al. (2024)

Cytowania: 1$ PaywallDOI ↗PubMed ↗

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Synthesis and evaluation of molecularly imprinted silica gel for 2-hydroxybenzoic Acid in aqueous solution.

(2013)

Cytowania: 7Open AccessDOI ↗PubMed ↗PDF ↗

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5-(Bis(3-(2-hydroxyethyl)-1H-indol-2-yl)methyl)-2-hydroxybenzoic acid (BHIMHA): showing a strategy of designing drug to block lung metastasis of tumors.

et al. (2016)

Cytowania: 5Open AccessDOI ↗PubMed ↗PDF ↗

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Synthesis, Characterization, and Biological Studies of a New Schiff Base Ligand Derived from 5-Amino-2-hydroxybenzoic Acid and Benzaldehyde and its Metal Complexes.

Karwan N. Abdulah, Eman I. Alsalihi, Jamil A. Juma (2025) · Zanin Journal of Science and Engineering

Cytowania: 1Open AccessDOI ↗PDF ↗

Structural, vibrational and quantum chemical investigations on 5-chloro-2-hydroxybenzamide and 5-chloro-2-hydroxybenzoic acid.

et al. (2011)

Cytowania: 4$ PaywallDOI ↗PubMed ↗

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Preclinical Pharmacokinetics and Acute Toxicity in Rats of 5-{[(2E)-3-Bromo-3-carboxyprop-2-enoyl]amino}-2-hydroxybenzoic Acid: A Novel 5-Aminosalicylic Acid Derivative with Potent Anti-Inflammatory Activity.

et al. (2021)

Cytowania: 1Open AccessDOI ↗PubMed ↗PDF ↗

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Pharmacokinetics in Wistar Rats of 5-[(4-Carboxybutanoyl)Amino]-2-Hydroxybenzoic Acid: A Novel Synthetic Derivative of 5-Aminosalicylic Acid (5-ASA) with Possible Anti-Inflammatory Activity.

et al. (2016)

Cytowania: 1Open AccessDOI ↗PubMed ↗PDF ↗

Controlled hydrothermal synthesis of bismuth oxychloride/bismuth oxybromide/bismuth oxyiodide composites exhibiting visible-light photocatalytic degradation of 2-hydroxybenzoic acid and crystal violet.

et al. (2018)

Cytowania: 30$ PaywallDOI ↗PubMed ↗

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The crystal structure of the co-crystal: 2-hydroxybenzoic acid – N′-(butan-2-ylidene)pyridine-4-carbohydrazide, C10H13N3O·C7H6O3

Setshedi Itumeleng B., Smith Mark G. (2021) · Zeitschrift für Kristallographie - New Crystal Structures

Cytowania: 2Open AccessDOI ↗PDF ↗

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Identification of 2-hydroxybenzoic acid derivatives as selective SIRT5 inhibitors.

et al. (2022)

Cytowania: 12Open AccessDOI ↗PubMed ↗PDF ↗

Lead bismuth oxybromide/graphene oxide: Synthesis, characterization, and photocatalytic activity for removal of carbon dioxide, crystal violet dye, and 2-hydroxybenzoic acid.

et al. (2020)

Cytowania: 22$ PaywallDOI ↗PubMed ↗

Synthesis and antibacterial evaluation of 3-Farnesyl-2-hydroxybenzoic acid from Piper multiplinervium.

(2014)

Cytowania: 1$ PaywallDOI ↗PubMed ↗

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Aspirin Derivative 5-(Bis(3-methylbut-2-enyl)amino)-2-hydroxybenzoic Acid Improves Thermotolerance via Stress Response Proteins in <i>Caenorhabditis elegans</i>.

et al. (2018)

Cytowania: 5Open AccessDOI ↗PubMed ↗PDF ↗

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Synthesis, Structural Characterization, and In Silico Evaluation of the Salicylidene Schiff Base 4‑{(<i>E</i>)‑[(2,3-Dihydroxyphenyl)methylidene]amino}-2-hydroxybenzoic Acid as a Promising Scaffold for Human Transthyretin Inhibitor.

(2026)

Cytowania: 1Open AccessDOI ↗PubMed ↗PDF ↗

4-((5-(Tert-butyl)-3-chloro-2-hydroxybenzyl) amino)-2-hydroxybenzoic acid protects against oxygen-glucose deprivation/reperfusion injury.

et al. (2018)

Cytowania: 8$ PaywallDOI ↗PubMed ↗

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Utilizing MOF-Ionic liquid nanocatalyst for the creation of dimethyl carbonate from carbon dioxide

Shulong Liu, Qian Wan, Dulong Feng et al. (2024) · Journal of CO2 Utilization

Cytowania: 2Open AccessDOI ↗PDF ↗

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Two new Zn(ii) coordination polymers incorporating 2-(2,6-dichlorophenyl)-1H-imidazo[4,5-f][1,10]phenanthroline: Synthesis and structure

Wang Huilin, Wang Xin, Li Meimiao et al. (2024) · Main Group Metal Chemistry

Cytowania: 2Open AccessDOI ↗PDF ↗

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Ex vivo and in silico evaluations of (E)-5-((benzo[d]thiazol-2-ylimino)(methylthio)methylamino)-2-hydroxybenzoic acid as a β3-adrenoreceptor agonist exerting anti-obesity, anti-inflammatory and hepatoprotective effects on Zucker rats.

et al. (2026)

Open AccessDOI ↗PubMed ↗PDF ↗

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Laura Cristina Cabrera-Pérez, Itzia Irene Padilla-Martínez, Ángel Miliar-García et al. (2026) · PLoS ONE

Open AccessPDF ↗

Polymer complexes. LX. Supramolecular coordination and structures of N(4-(acrylamido)-2-hydroxybenzoic acid) polymer complexes.

et al. (2015)

Cytowania: 2$ PaywallDOI ↗PubMed ↗

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

Synoniemen

salicylic acid · 2-Hydroxybenzoic acid · 69-72-7 · o-hydroxybenzoic acid · 2-Carboxyphenol · o-Carboxyphenol · Retarder W · Rutranex · Salonil · Keralyt · Duoplant · Freezone · Saligel · Ionil · Psoriacid-S-stift

Gegevensbronnen

📊 PubChem CID 338 — NIH
🔬 NIST WebBook — spektroskopia
🌐 Wikidata
💊 ChEMBL — bioaktywność

Kopen in de winkel

Salicylic acid →

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