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 Propylene carbonate?

Propylene carbonate è un composto chimico registrato con il numero CAS 108-32-7. Formula bruta: C4H6O3. Massa molare: 102.09 g/mol. IUPAC: 4-methyl-1,3-dioxolan-2-one.

Qual è il numero CAS di Propylene carbonate?

Il numero CAS di Propylene carbonate è 108-32-7 — un identificativo univoco del Chemical Abstracts Service (CAS).

Qual è la formula bruta di Propylene carbonate?

Formula bruta: C4H6O3. Massa molare: 102.09 g/mol. logP (XLogP3): -0.4. PSA: 35.5 Å².

Quali sono i pericoli GHS di Propylene carbonate?

Secondo la classificazione GHS, Propylene carbonate deve riportare le seguenti indicazioni di pericolo: H319 (Provoca grave irritazione oculare.).

Dove acquistare Propylene carbonate?

Propylene carbonate è disponibile nel nostro negozio. Vedi il prodotto: https://epchems.online/products/propylene-carbonate/

Da dove provengono i dati chimici di Propylene carbonate?

I dati chimici di Propylene carbonate provengono da fonti autorevoli: PubChem (NIH), ChEMBL (EBI). PubChem CID: 7924. Conformi al Regolamento CLP (CE 1272/2008), disponibili con licenza CC-BY 4.0.

Propylene carbonate

CAS 108-32-7 · C₄H₆O₃ · MW 102.09 g/mol

Informazioni su Propylene carbonate

Propylene carbonate è un composto chimico registrato con il numero CAS 108-32-7, con formula bruta C₄H₆O₃, e massa molare di 102.09 g/mol.

La molecola contiene 13 atomi collegati da 13 legami chimici. Il nome sistematico IUPAC completo di questo composto è 4-methyl-1,3-dioxolan-2-one. 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 = -0.4 (valore negativo, composto idrofilo), superficie polare PSA = 35.5 Å², 0 donatori e 3 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	C₄H₆O₃
Masa molowa	102.09 g/mol
IUPAC	4-methyl-1,3-dioxolan-2-one
SMILES	`CC1COC(=O)O1`
InChIKey	`RUOJZAUFBMNUDX-UHFFFAOYSA-N`
logP (XLogP3)	-0.4
PSA	35.5 Å²
HBD / HBA	0 / 3
PubChem CID	CID 7924 ↗

Sicurezza GHS

Sygnał: Uwaga

GHS07

H319 — Działa drażniąco na oczy

Letteratura scientifica

Literatura naukowa

3 artykułów · 0 open access · Źródła: PubMed, OpenAlex, Semantic Scholar

📈 Timeline publikacji (3 artykułów)

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

FTIR, FT-Raman, ab initio and density functional studies on 4-methyl-1,3-dioxolan-2-one and 4,5-dichloro-1,3-dioxolan-2-one.

et al. (2010)

Cytowania: 18$ PaywallDOI ↗PubMed ↗

Kinetics of substitution reactions of transition metal complexes in 1,3-dioxolan-2-one + water and 4-methyl-1,3-dioxolan-2-one + water solvent mixtures

Michael J. Blandamer, John Burgess, Stephen J. Hamshere et al. (1979) · Transition Metal Chemistry

Cytowania: 4$ PaywallDOI ↗

ChemInform Abstract: DIELECTRIC RELAXATION IN NON‐AQUEOUS SOLUTIONS PART 5, PROPYLENE CARBONATE (4‐METHYL‐1,3‐DIOXOLAN‐2‐ONE)

EDMUND A. S. CAVELL (1974) · Chemischer Informationsdienst

$ 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

PROPYLENE CARBONATE · 108-32-7 · 4-Methyl-1,3-dioxolan-2-one · 1,2-Propylene carbonate · 1,2-Propanediol cyclic carbonate · Arconate 5000 · Texacar PC · Cyclic propylene carbonate · 1,2-Propanediol carbonate · 1,3-Dioxolan-2-one, 4-methyl- · Propylene glycol cyclic carbonate · Dipropylene carbonate · 1-Methylethylene carbonate · 1,2-Propanediyl carbonate · Cyclic 1,2-propylene carbonate

Fonti dei dati

📊 PubChem CID 7924 — NIH
🔬 NIST WebBook — spektroskopia
💊 ChEMBL — bioaktywność

Acquista nel negozio

Propylene carbonate →

Molecole correlate

Benzyl Alcohol CAS 100-51-6 · C7H8O Diethylene glycol monohexyl ether CAS 112-59-4 · C10H22O3 Adipic acid CAS 124-04-9 · C6H10O4 Dipropylene glycol monobutyl ether CAS 29911-28-2 · C10H22O3 Sodium Benzoate CAS 532-32-1 · C₇H₅NaO₂ Citric acid monohydrate CAS 77-92-9 · C6H8O7