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.

Che cos'è Isopropyl acetate?

Isopropyl acetate è un composto chimico registrato con il numero CAS 108-21-4. Formula bruta: C5H10O2. Massa molare: 102.13 g/mol. IUPAC: propan-2-yl acetate.

Qual è il numero CAS di Isopropyl acetate?

Il numero CAS di Isopropyl acetate è 108-21-4 — un identificativo univoco del Chemical Abstracts Service (CAS).

Qual è la formula bruta di Isopropyl acetate?

Formula bruta: C5H10O2. Massa molare: 102.13 g/mol. logP (XLogP3): 0.9. PSA: 26.3 Å².

Quali sono i pericoli GHS di Isopropyl acetate?

Secondo la classificazione GHS, Isopropyl acetate deve riportare le seguenti indicazioni di pericolo: H225 (Liquido e vapori facilmente infiammabili.), H336 (Può provocare sonnolenza o vertigini.), H319 (Provoca grave irritazione oculare.), EUH066 (L'esposizione ripetuta può provocare secchezza o screpolature della pelle.).

Dove acquistare Isopropyl acetate?

Isopropyl acetate è disponibile nel nostro negozio. Vedi il prodotto: https://epchems.online/products/isopropyl-acetate/

Da dove provengono i dati chimici di Isopropyl acetate?

I dati chimici di Isopropyl acetate provengono da fonti autorevoli: PubChem (NIH). PubChem CID: 7915. Conformi al Regolamento CLP (CE 1272/2008), disponibili con licenza CC-BY 4.0.

Isopropyl acetate

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

Informazioni su Isopropyl acetate

Isopropyl acetate è un composto chimico registrato con il numero CAS 108-21-4, con formula bruta C₅H₁₀O₂, e massa molare di 102.13 g/mol.

La molecola contiene 17 atomi collegati da 16 legami chimici. Il nome sistematico IUPAC completo di questo composto è propan-2-yl acetate. Il modello 3D interattivo qui sopra permette di visualizzare la disposizione spaziale degli atomi — puoi ruotarlo con il mouse, zoomare con la rotellina e passare tra le modalità di visualizzazione scheletro / Ball & Stick / Space Fill.

Dal punto di vista delle proprietà chimico-fisiche, il coefficiente di ripartizione logP = 0.9 (valore positivo, composto lipofilo), superficie polare PSA = 26.3 Å², 0 donatori e 2 accettori di legami a idrogeno. Questi parametri sono fondamentali per valutare la biodisponibilità e l'interazione con le biomolecole.

I dati chimici di questo composto provengono da PubChem (NIH NLM NCBI), uno dei più grandi database chimici al mondo. Tutte le informazioni sono aggiornate automaticamente e arricchite con le traduzioni delle indicazioni di pericolo GHS conformi al Regolamento CLP (CE 1272/2008). Il widget qui sopra può essere utilizzato per scopi educativi, di ricerca e commerciali.

Proprietà chimico-fisiche

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 ↗

Sicurezza 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

Letteratura scientifica

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.

Sinonimi

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)

Fonti dei dati

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

Acquista nel negozio

Isopropyl acetate →

Molecole correlate

L-Alanine CAS 56-41-7 · C3H7NO2 Dimethyl Sulfoxide CAS 67-68-5 · C2H6OS Terephthalic Acid CAS 100-21-0 · C8H6O4 Sorbitol CAS 50-70-4 · C6H14O6 Ethanol CAS 100-42-5 · C8H8 L-Serine CAS 56-45-1 · C3H7NO3