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.

Wat is Vinyl acetate?

Vinyl acetate is een chemische verbinding, geregistreerd onder CAS-nummer 108-05-4. Brutoformule: C4H6O2. Molaire massa: 86.09 g/mol. IUPAC: ethenyl acetate.

Wat is het CAS-nummer van Vinyl acetate?

Het CAS-nummer van Vinyl acetate is 108-05-4 — een unieke identificatie van de Chemical Abstracts Service (CAS).

Wat is de brutoformule van Vinyl acetate?

Brutoformule: C4H6O2. Molaire massa: 86.09 g/mol. logP (XLogP3): 0.7. PSA: 26.3 Å².

Wat zijn de GHS-gevaren van Vinyl acetate?

Volgens de GHS-classificatie moet Vinyl acetate worden voorzien van de volgende gevarenaanduidingen: H225 (Licht ontvlambare vloeistof en damp.), H351 (Verdacht van het veroorzaken van kanker.), H332 (Schadelijk bij inademing.), H335 (Kan irritatie van de luchtwegen veroorzaken.).

Waar kan ik Vinyl acetate kopen?

Vinyl acetate is verkrijgbaar in onze winkel. Bekijk het product: https://epchems.online/products/vinyl-acetate/

Waar komen de chemische gegevens voor Vinyl acetate vandaan?

De chemische gegevens voor Vinyl acetate zijn afkomstig van gezaghebbende bronnen: PubChem (NIH), ChEMBL (EBI). PubChem CID: 7904. Conform de CLP-verordening (EG 1272/2008), beschikbaar onder de CC-BY 4.0-licentie.

Vinyl acetate

CAS 108-05-4 · C₄H₆O₂ · MW 86.09 g/mol

Over Vinyl acetate

Vinyl acetate is een chemische verbinding, geregistreerd onder nummer CAS 108-05-4, met de brutoformule C₄H₆O₂, en een molaire massa van 86.09 g/mol.

Het molecuul bevat 12 atomen verbonden door 11 chemische bindingen. De volledige systematische IUPAC-naam van deze verbinding is ethenyl acetate. 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 = 0.7 (positieve waarde, lipofiele verbinding), polair oppervlak PSA = 26.3 Å², 0 donoren en 2 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	C₄H₆O₂
Masa molowa	86.09 g/mol
IUPAC	ethenyl acetate
SMILES	`CC(=O)OC=C`
InChIKey	`XTXRWKRVRITETP-UHFFFAOYSA-N`
logP (XLogP3)	0.7
PSA	26.3 Å²
HBD / HBA	0 / 2
PubChem CID	CID 7904 ↗

GHS-veiligheid

Sygnał: Niebezpieczeństwo

GHS02

GHS07

GHS08

H225 — Wysoce łatwopalna ciecz i pary

H351 — Podejrzewa się, że powoduje raka

H332 — Działa szkodliwie w następstwie wdychania

H335 — Może powodować podrażnienie dróg oddechowych

Wetenschappelijke literatuur

Literatura naukowa

17 artykułów · 3 open access · Źródła: PubMed, OpenAlex, Semantic Scholar

📈 Timeline publikacji (17 artykułów)

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

Vinyl acetate : CAS # 108-05-4 [Spanish]

$ Paywall

Vapor–Liquid Equilibrium at p/kPa = 101.3 of the Binary Mixtures of Ethenyl Acetate with Methanol and Butan-1-ol

Javier Camacho, Eduardo Díez, Ismael Díaz et al. (2012) · Journal of Chemical & Engineering Data

Cytowania: 5$ PaywallDOI ↗

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Vinyl acetate : CAS # 108-05-4

Open AccessPDF ↗

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The influence of organic modification on the structural and adsorptive properties of bentonite clay and its application for the removal of lead

Stojiljković S., Stamenković M., Kostić D. et al. (2013) · Science of Sintering

Open AccessDOI ↗PDF ↗

Vinyl Acetate 108-05-4

(2004) · Wiley

$ PaywallDOI ↗

Removal kinetics of vinyl acetate under aerobic and anoxic conditions in a batch bioreactor.

Yalçın Çelik B, Nuhoğlu A, Kul S et al. (2024) · Journal of environmental management

$ PaywallDOI ↗PubMed ↗

Insights into Factors Affecting Ethylene-Vinyl Acetate Copolymer Crystallinity in Islatravir Implant.

Zhu X, Punia A, Skomski D et al. (2024) · Molecular pharmaceutics

$ PaywallDOI ↗PubMed ↗

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Statistical and Block Copolymers of Ethylene and Vinyl Acetate via Reversible Addition-Fragmentation Chain Transfer Polymerization.

Wolpers A, Baffie F, Monteil V et al. (2021) · Macromolecular rapid communications

Open AccessDOI ↗PubMed ↗PDF ↗

Difference in thickness of vacuum-formed mouthguards using ethylene vinyl acetate and polyolefin sheets.

Mizuhashi F, Watarai Y, Suzuki T (2023) · Dental traumatology : official publication of International Association for Dental Traumatology

$ PaywallDOI ↗PubMed ↗

Ball milling and hot-melt extrusion of indomethacin-l-arginine-vinylpyrrolidone-vinyl acetate copolymer: Solid-state properties and dissolution performance.

Iemtsev A, Zemánková A, Hassouna F et al. (2022) · International journal of pharmaceutics

$ PaywallDOI ↗PubMed ↗

Vinyl acetate.

(1995) · IARC monographs on the evaluation of carcinogenic risks to humans

Review$ PaywallPubMed ↗

Vinyl acetate.

(1986) · IARC monographs on the evaluation of the carcinogenic risk of chemicals to humans

$ PaywallPubMed ↗

Metabolism and pharmacokinetics of vinyl acetate.

Simon P, Filser JG, Bolt HM (1985) · Archives of toxicology

$ PaywallDOI ↗PubMed ↗

Performance evaluation of microbial fuel cell using a radiation synthesized low density polyethylene-grafted-poly (glycidyl methacrylate-co-vinyl acetate) as a proton exchange membrane.

Abd-Elmabood HM, Raafat AI, Soliman EA et al. (2022) · Environmental technology

$ PaywallDOI ↗PubMed ↗

Acetic Acid, Ethenyl Ester, Polymer with 1‐Ethenyl‐2‐Pyrrolidinone 25086‐89‐9

(2004) · Sax's Dangerous Properties of Industrial Materials

$ PaywallDOI ↗

Acetic Acid, Ethenyl Ester, Polymer with 1‐Ethenyl‐2‐Pyrrolidinone 25086‐89‐9

(2012) · Sax's Dangerous Properties of Industrial Materials

$ PaywallDOI ↗

Stereochemistry of the Thermal Isomerization of 1-Ethenyl-7-exo-Phenylbicyclo[4.1.0]heptane to 7-Phenylbicyclo[4.3.0]non-1(9)-ene: The Conformational Course of an Antarafacial,Retention Vinylcyclopropane−Cyclopentene Rearrangement

John E. Baldwin (2095966), Richard C. Burrell (2145319), Samuel J. Bonacorsi, (3044256) (2016)

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

Synoniemen

VINYL ACETATE · Ethenyl acetate · 108-05-4 · Acetic acid ethenyl ester · Acetic acid vinyl ester · Ethenyl ethanoate · Acetoxyethylene · Vinylacetate · Vinyl acetate monomer · Vinyl A monomer · Acetoxyethene · 1-Acetoxyethylene · Vinyl ethanoate · Vinylacetat · Zeset T

Gegevensbronnen

📊 PubChem CID 7904 — NIH
🔬 NIST WebBook — spektroskopia
🌐 Wikidata
💊 ChEMBL — bioaktywność

Kopen in de winkel

Vinyl acetate →

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