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.

Qu'est-ce que Isopropyl acetate ?

Isopropyl acetate est un composé chimique enregistré sous le numéro CAS 108-21-4. Formule brute: C5H10O2. Masse molaire: 102.13 g/mol. IUPAC: propan-2-yl acetate.

Quel est le numéro CAS de Isopropyl acetate ?

Le numéro CAS de Isopropyl acetate est 108-21-4 — un identifiant unique du Chemical Abstracts Service (CAS).

Quelle est la formule brute de Isopropyl acetate ?

Formule brute: C5H10O2. Masse molaire: 102.13 g/mol. logP (XLogP3): 0.9. PSA: 26.3 Å².

Quels sont les dangers GHS de Isopropyl acetate ?

Selon la classification GHS, Isopropyl acetate doit porter les mentions de danger suivantes : H225 (Liquide et vapeurs très inflammables.), H336 (Peut provoquer somnolence ou vertiges.), H319 (Provoque une sévère irritation des yeux.), EUH066 (L'exposition répétée peut provoquer dessèchement ou gerçures de la peau.).

Où acheter Isopropyl acetate ?

Isopropyl acetate est disponible dans notre boutique. Voir le produit : https://epchems.online/products/isopropyl-acetate/

D'où proviennent les données chimiques de Isopropyl acetate ?

Les données chimiques de Isopropyl acetate proviennent de sources faisant autorité : PubChem (NIH). PubChem CID: 7915. Conformes au règlement CLP (CE 1272/2008), disponibles sous licence CC-BY 4.0.

Isopropyl acetate

CAS 108-21-4 · C₅H₁₀O₂ · MW 102.13 g/mol

À propos de Isopropyl acetate

Isopropyl acetate est un composé chimique enregistré sous le numéro CAS 108-21-4, de formule brute C₅H₁₀O₂, et de masse molaire 102.13 g/mol.

La molécule contient 17 atomes reliés par 16 liaisons chimiques. Le nom systématique IUPAC complet de ce composé est propan-2-yl acetate. Le modèle 3D interactif ci-dessus permet de visualiser l'arrangement spatial des atomes — vous pouvez le faire pivoter à la souris, zoomer avec la molette et basculer entre les modes de visualisation squelette / Ball & Stick / Space Fill.

Du point de vue des propriétés physico-chimiques, le coefficient de partage logP = 0.9 (valeur positive, composé lipophile), surface polaire PSA = 26.3 Å², 0 donneurs et 2 accepteurs de liaisons hydrogène. Ces paramètres sont essentiels pour évaluer la biodisponibilité et l'interaction avec les biomolécules.

Les données chimiques de ce composé proviennent de PubChem (NIH NLM NCBI), l'une des plus grandes bases de données chimiques au monde. Toutes les informations sont mises à jour automatiquement et enrichies de traductions des mentions de danger GHS conformes au règlement CLP (CE 1272/2008). Le widget ci-dessus peut être utilisé à des fins éducatives, de recherche et commerciales.

Propriétés physico-chimiques

Wzór sumaryczny	C₅H₁₀O₂
Masa molowa	102.13 g/mol
IUPAC	propan-2-yl acetate
SMILES	`CC(C)OC(=O)C`
InChIKey	`JMMWKPVZQRWMSS-UHFFFAOYSA-N`
logP (XLogP3)	0.9
PSA	26.3 Å²
HBD / HBA	0 / 2
PubChem CID	CID 7915 ↗

Sécurité GHS

Sygnał: Niebezpieczeństwo

GHS02

GHS07

H225 — Wysoce łatwopalna ciecz i pary

H336 — Może wywoływać uczucie senności lub zawroty głowy

H319 — Działa drażniąco na oczy

EUH066 — Powtarzające się narażenie może powodować wysuszanie lub pękanie skóry

Littérature scientifique

Literatura naukowa

5 artykułów · 1 open access · Źródła: PubMed, OpenAlex, Semantic Scholar

📈 Timeline publikacji (5 artykułów)

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

Tetrazole activity against Candida albicans. The role of KEX2 mutations in the sensitivity to (±)-1-[5-(2-chlorophenyl)-2H-tetrazol-2-yl]propan-2-yl acetate

Małgorzata Bondaryk, Edyta Łukowska-Chojnacka, Monika Staniszewska (2015) · Bioorganic & Medicinal Chemistry Letters

Cytowania: 20$ PaywallDOI ↗

RIFM fragrance ingredient safety assessment, isopropyl acetate, CAS Registry Number 108-21-4.

et al. (2019)

Cytowania: 2$ PaywallDOI ↗PubMed ↗

Update to RIFM fragrance ingredient safety assessment, isopropyl acetate, CAS registry number 108-21-4.

et al. (2024)

$ PaywallDOI ↗PubMed ↗

🔓

1-(2-Methyl-5-nitro-1H-imidazol-1-yl)propan-2-yl acetate

Hafiz Abdullah Shahid, Ejaz Hussain, Sajid Jahangir et al. (2014) · Acta Crystallographica Section E

Cytowania: 2Open AccessDOI ↗PDF ↗

Lipase-mediated kinetic resolution of (RS)-1-bromo-3-[4-(2-methoxy-ethyl)-phenoxy]-propan-2-ol to (R)-1-bromo-3-(4-(2-methoxyethyl) phenoxy) propan-2-yl acetate

Abhishek Kaler, Vachan Singh Meena, Manpreet Singh et al. (2011) · Tetrahedron Letters

Cytowania: 4$ PaywallDOI ↗

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

Synonymes

ISOPROPYL ACETATE · 108-21-4 · propan-2-yl acetate · 2-Propyl acetate · 2-Acetoxypropane · Acetic acid, 1-methylethyl ester · Isopropyl ethanoate · Isopropylacetat · Paracetat · Isopropylacetaat · Acetic Acid, isopropyl ester · 1-Methylethyl acetate · Acetate d'isopropyle · Isopropylester kyseliny octove · Isopropile (acetato di)

Sources des données

📊 PubChem CID 7915 — NIH
🔬 NIST WebBook — spektroskopia
🌐 Wikidata
💊 ChEMBL — bioaktywność

Acheter en boutique

Isopropyl acetate →

Molécules apparentées

Sodium citrate CAS 68-04-2 · C₆H₅Na₃O₇ L-Tryptophan CAS 73-22-3 · C11H12N2O2 Triethylene glycol monobutyl ether CAS 143-22-6 · C10H22O4 Citric acid monohydrate CAS 77-92-9 · C6H8O7 Triethylene Diamine CAS 280-57-9 · C6H12N2 Sodium cyanide CAS 143-33-9 · CNNa