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.

Co to jest Vinyl acetate?

Vinyl acetate to związek chemiczny zarejestrowany pod numerem CAS 108-05-4. Wzór sumaryczny: C4H6O2. Masa molowa: 86.09 g/mol. IUPAC: ethenyl acetate.

Jaki jest numer CAS Vinyl acetate?

Numer CAS dla Vinyl acetate to 108-05-4 — unikalny identyfikator Chemical Abstracts Service (CAS).

Jaki jest wzór sumaryczny Vinyl acetate?

Wzór sumaryczny: C4H6O2. Masa molowa: 86.09 g/mol. logP (XLogP3): 0.7. PSA: 26.3 Å².

Gdzie można kupić Vinyl acetate?

Vinyl acetate jest dostępny w naszym sklepie. Zobacz produkt: https://epchems.online/products/vinyl-acetate/

Skąd pochodzą dane chemiczne dla Vinyl acetate?

Dane chemiczne dla Vinyl acetate pochodzą z autorytatywnych źródeł: PubChem (NIH), ChEMBL (EBI). PubChem CID: 7904. Zgodne z Rozporządzeniem CLP (WE 1272/2008), dostępne na licencji CC-BY 4.0.

Vinyl acetate

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

O związku Vinyl acetate

Vinyl acetate to związek chemiczny zarejestrowany pod numerem CAS 108-05-4 o wzorze sumarycznym C₄H₆O₂ i masie molowej 86.09 g/mol.

Cząsteczka zawiera 12 atomów połączonych 11 wiązaniami chemicznymi. Pełna nazwa systematyczna IUPAC dla tego związku to ethenyl acetate. Powyższy interaktywny model 3D pozwala obejrzeć układ przestrzenny atomów — można go obracać myszką, powiększać scrollem oraz przełączać między trybami wizualizacji szkieletowy / Ball & Stick / Space Fill.

Pod względem właściwości fizykochemicznych współczynnik podziału logP = 0.7 (wartość dodatnia, związek lipofilowy), powierzchnia polarna PSA = 26.3 Å², 0 donorów i 2 akceptorów wiązań wodorowych. Te parametry są kluczowe przy ocenie biodostępności i interakcji z biomolekułami.

Dane chemiczne dla tego związku pochodzą z PubChem (NIH NLM NCBI), jednej z największych baz związków chemicznych na świecie. Wszystkie informacje są aktualizowane automatycznie i wzbogacone o tłumaczenia zwrotów GHS zgodne z Rozporządzeniem CLP (1272/2008/WE). Powyższy widget można używać do celów edukacyjnych, badawczych i komercyjnych.

Właściwości fizykochemiczne

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 ↗

Bezpieczeństwo GHS

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

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.

Synonimy

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

Data sources

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

Kup w sklepie

Vinyl acetate →

Powiązane molekuły

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