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.

Stirene è un composto chimico registrato con il numero CAS 100-42-5. Formula bruta: C8H8. Massa molare: 104.15 g/mol. IUPAC: styrene.

Qual è il numero CAS di Stirene?

Il numero CAS di Stirene è 100-42-5 — un identificativo univoco del Chemical Abstracts Service (CAS).

Qual è la formula bruta di Stirene?

Formula bruta: C8H8. Massa molare: 104.15 g/mol. logP (XLogP3): 2.9. PSA: 0 Å².

Quali sono i pericoli GHS di Stirene?

Secondo la classificazione GHS, Stirene deve riportare le seguenti indicazioni di pericolo: H226 (Liquido e vapori infiammabili.), H361d (Podejrzewa się, że działa szkodliwie na dziecko w łonie matki), H332 (Nocivo se inalato.), H372 (Provoca danni agli organi in caso di esposizione prolungata o ripetuta.), H315 (Provoca irritazione cutanea.).

Dove acquistare Stirene?

Stirene è disponibile nel nostro negozio. Vedi il prodotto: https://epchems.online/products/ethanol/

Da dove provengono i dati chimici di Stirene?

I dati chimici di Stirene provengono da fonti autorevoli: PubChem (NIH), ChEMBL (EBI). PubChem CID: 7501. Conformi al Regolamento CLP (CE 1272/2008), disponibili con licenza CC-BY 4.0.

Stirene

Styrene

CAS 100-42-5 · C₈H₈ · MW 104.15 g/mol

Informazioni su Stirene

Stirene è un composto chimico registrato con il numero CAS 100-42-5, con formula bruta C₈H₈, e massa molare di 104.15 g/mol.

La molecola contiene 16 atomi collegati da 16 legami chimici. Il nome sistematico IUPAC completo di questo composto è styrene. 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 = 2.9 (valore positivo, composto lipofilo), superficie polare PSA = 0 Å², 0 donatori e 0 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	C₈H₈
Masa molowa	104.15 g/mol
IUPAC	styrene
SMILES	`C=CC1=CC=CC=C1`
InChIKey	`PPBRXRYQALVLMV-UHFFFAOYSA-N`
logP (XLogP3)	2.9
PSA	0 Å²
HBD / HBA	0 / 0
PubChem CID	CID 7501 ↗

Sicurezza GHS

Sygnał: Niebezpieczeństwo

GHS02

GHS07

GHS08

H226 — Łatwopalna ciecz i pary

? — H361d

H332 — Działa szkodliwie w następstwie wdychania

H372 — Powoduje uszkodzenie narządów poprzez długotrwałe lub powtarzane narażenie

H315 — Działa drażniąco na skórę

H319 — Działa drażniąco na oczy

Letteratura scientifica

Literatura naukowa

20 artykułów · 11 open access · Źródła: PubMed, OpenAlex, Semantic Scholar

📈 Timeline publikacji (20 artykułów)

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

Styrene - ToxFAQs\u2122 : CAS#: 100-42-5 [Arabic]

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Styrene - ToxFAQs\u2122 : CAS#: 100-42-5 [Korean]

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Styrene - ToxFAQs\u2122 : CAS#: 100-42-5 [Hatian Creole]

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Styrene - ToxFAQs\u2122 : CAS#: 100-42-5 [Spanish]

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Styrene - ToxFAQs\u2122 : CAS#: 100-42-5 [French]

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Styrene - ToxFAQs\u2122 : CAS#: 100-42-5 [Chinese]

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Styrene - ToxFAQs\u2122 : CAS#: 100-42-5 [Vietnamese]

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Styrene - ToxFAQs\u2122 : CAS#: 100-42-5 [Portuguese]

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Styrene - ToxFAQs\u2122 : CAS#: 100-42-5

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A Morphological Study of Dynamically Vulcanized Styrene-Ethylene-Butylene-Styrene/Styrene-Butylene-Styrene/MethylVinylSilicon Rubber Thermoplastic Elastomer

Chunxu Zhao, Xiaohan Chen, Xian Chen (2022) · Polymers

Cytowania: 4Open AccessDOI ↗PDF ↗

🔓

Chain Length-Regulated Poly(styrene-co-maleic acid)/Lipid Nanostructures for Curcumin Encapsulation.

et al. (2026)

Open AccessDOI ↗PubMed ↗PDF ↗

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Synthesis and Comparative Investigation of Ortho-, Meta-, and Para-Carboxyphenylmaleimide-Styrene Copolymers.

et al. (2026)

Open AccessDOI ↗PubMed ↗PDF ↗

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Functionalization reactions of styrene and styrene derivatives.

et al. (2026)

Open AccessDOI ↗PubMed ↗PDF ↗

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Preparation and Properties of Reprocessable Hydrogenated Styrene-Butadiene Rubber.

(2026)

Open AccessDOI ↗PubMed ↗PDF ↗

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Effects of the Physical Recycling of Acrylonitrile-Butadiene-Styrene (ABS) Plastics on the Properties of the Final Product.

et al. (2026)

Open AccessDOI ↗PubMed ↗PDF ↗

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Physicochemical Properties and Styrene Migration Potential of Polystyrene Food Packaging

(2026)

Open AccessDOI ↗PDF ↗

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Imidazophenothiazine-based photocatalysts enable the organocatalyzed atom-transfer radical polymerization of styrene.

et al. (2026)

Open AccessDOI ↗PubMed ↗PDF ↗

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Asymmetric Isoporous Membranes of 2-Vinylpyridine-Styrene Linear Diblock Copolymers: Fabrication and Evaluation in Water Treatment.

et al. (2026)

Open AccessDOI ↗PubMed ↗PDF ↗

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Synthesis of styrene polymer grafted nanocarbon particles for application as reinforcement additive for unsaturated polyester plastics.

et al. (2026)

Open AccessDOI ↗PubMed ↗PDF ↗

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Role of Polymer Backbone Rigidity on the Solution Properties of Bioderived Poly(styrene-co-maleic anhydride) Derivatives.

et al. (2026)

Open AccessDOI ↗PubMed ↗PDF ↗

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

Sinonimi

STYRENE · 100-42-5 · Ethenylbenzene · Phenylethylene · Vinylbenzene · Styrol · Cinnamene · Styrene monomer · Benzene, ethenyl- · Phenylethene · Styrolene · Phenethylene · Vinylbenzol · Styrole · Vinyl benzene

Fonti dei dati

📊 PubChem CID 7501 — NIH
🔬 NIST WebBook — spektroskopia
🌐 Wikidata
💊 ChEMBL — bioaktywność

Acquista nel negozio

Ethanol →

Molecole correlate

N-Methyl-2-pyrrolidone CAS 872-50-4 · C5H9NO Ethylene glycol CAS 107-21-1 · C2H6O2 Polypropylene Glycol CAS 25322-69-4 2-Butanone CAS 78-93-3 · C4H8O Methyl methacrylate (MMA) CAS 80-62-6 · C5H8O2 Trichloroethylene CAS 79-01-6 · C2HCl3