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.

Was ist Vinyl acetate?

Vinyl acetate ist eine chemische Verbindung, registriert unter der CAS-Nummer 108-05-4. Summenformel: C4H6O2. Molmasse: 86.09 g/mol. IUPAC: ethenyl acetate.

Wie lautet die CAS-Nummer von Vinyl acetate?

Die CAS-Nummer von Vinyl acetate ist 108-05-4 — eine eindeutige Kennung des Chemical Abstracts Service (CAS).

Wie lautet die Summenformel von Vinyl acetate?

Summenformel: C4H6O2. Molmasse: 86.09 g/mol. logP (XLogP3): 0.7. PSA: 26.3 Å².

Welche GHS-Gefahren hat Vinyl acetate?

Gemäß der GHS-Klassifizierung muss Vinyl acetate mit den folgenden Gefahrenhinweisen gekennzeichnet werden: H225 (Flüssigkeit und Dampf leicht entzündbar.), H351 (Kann vermutlich Krebs erzeugen.), H332 (Gesundheitsschädlich bei Einatmen.), H335 (Kann die Atemwege reizen.).

Wo kann ich Vinyl acetate kaufen?

Vinyl acetate ist in unserem Shop erhältlich. Produkt ansehen: https://epchems.online/products/vinyl-acetate/

Woher stammen die chemischen Daten für Vinyl acetate?

Die chemischen Daten für Vinyl acetate stammen aus zuverlässigen Quellen: PubChem (NIH), ChEMBL (EBI). PubChem CID: 7904. Konform mit der CLP-Verordnung (EG 1272/2008), verfügbar unter der Lizenz CC-BY 4.0.

Vinyl acetate

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

Über Vinyl acetate

Vinyl acetate ist eine chemische Verbindung, registriert unter der Nummer CAS 108-05-4, mit der Summenformel C₄H₆O₂, und einer Molmasse von 86.09 g/mol.

Das Molekül enthält 12 Atome, verbunden durch 11 chemische Bindungen. Der vollständige systematische IUPAC-Name dieser Verbindung lautet ethenyl acetate. 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 = 0.7 (positiver Wert, lipophile Verbindung), polare Oberfläche PSA = 26.3 Å², 0 Donatoren und 2 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	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-Sicherheit

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

Wissenschaftliche Literatur

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)

$ 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

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

Datenquellen

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

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