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 glycol monomethyl ether (PM)?

Propylene glycol monomethyl ether (PM) è un composto chimico registrato con il numero CAS 107-98-2. Formula bruta: C4H10O2. Massa molare: 90.12 g/mol. IUPAC: 1-methoxypropan-2-ol.

Qual è il numero CAS di Propylene glycol monomethyl ether (PM)?

Il numero CAS di Propylene glycol monomethyl ether (PM) è 107-98-2 — un identificativo univoco del Chemical Abstracts Service (CAS).

Qual è la formula bruta di Propylene glycol monomethyl ether (PM)?

Formula bruta: C4H10O2. Massa molare: 90.12 g/mol. logP (XLogP3): -0.2. PSA: 29.5 Å².

Quali sono i pericoli GHS di Propylene glycol monomethyl ether (PM)?

Secondo la classificazione GHS, Propylene glycol monomethyl ether (PM) deve riportare le seguenti indicazioni di pericolo: H226 (Liquido e vapori infiammabili.), H336 (Può provocare sonnolenza o vertigini.).

Dove acquistare Propylene glycol monomethyl ether (PM)?

Propylene glycol monomethyl ether (PM) è disponibile nel nostro negozio. Vedi il prodotto: https://epchems.online/products/propylene-glycol-monomethyl-ether/

Da dove provengono i dati chimici di Propylene glycol monomethyl ether (PM)?

I dati chimici di Propylene glycol monomethyl ether (PM) provengono da fonti autorevoli: PubChem (NIH), ChEMBL (EBI). PubChem CID: 7900. Conformi al Regolamento CLP (CE 1272/2008), disponibili con licenza CC-BY 4.0.

Propylene glycol monomethyl ether (PM)

1-Methoxy-2-propanol

CAS 107-98-2 · C₄H₁₀O₂ · MW 90.12 g/mol

Informazioni su Propylene glycol monomethyl ether (PM)

Propylene glycol monomethyl ether (PM) è un composto chimico registrato con il numero CAS 107-98-2, con formula bruta C₄H₁₀O₂, e massa molare di 90.12 g/mol.

La molecola contiene 16 atomi collegati da 15 legami chimici. Il nome sistematico IUPAC completo di questo composto è 1-methoxypropan-2-ol. 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 = -0.2 (valore negativo, composto idrofilo), superficie polare PSA = 29.5 Å², 1 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	C₄H₁₀O₂
Masa molowa	90.12 g/mol
IUPAC	1-methoxypropan-2-ol
SMILES	`CC(COC)O`
InChIKey	`ARXJGSRGQADJSQ-UHFFFAOYSA-N`
logP (XLogP3)	-0.2
PSA	29.5 Å²
HBD / HBA	1 / 2
PubChem CID	CID 7900 ↗

Sicurezza GHS

Sygnał: Uwaga

GHS02

GHS07

H226 — Łatwopalna ciecz i pary

H336 — Może wywoływać uczucie senności lub zawroty głowy

Letteratura scientifica

Literatura naukowa

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

(+,-)-1-Methoxypropan-2-ol C4H10O2 + C3H8O Propan-2-ol

I. Wichterle, J. Linek, Z. Wagner et al. · Landolt-Börnstein - Group IV Physical Chemistry

$ PaywallDOI ↗

Water H2O + C4H10O2 (+,-)-1-Methoxypropan-2-ol

I. Wichterle, J. Linek, Z. Wagner et al. · Landolt-Börnstein - Group IV Physical Chemistry

$ PaywallDOI ↗

(+,-)-1-Methoxypropan-2-ol C4H10O2 + C6H14O Diisopropyl ether

I. Wichterle, J. Linek, Z. Wagner et al. · Landolt-Börnstein - Group IV Physical Chemistry

$ PaywallDOI ↗

(+,-)-1-Methoxypropan-2-ol C4H10O2 + C3H8O2 Propane-1,2-diol

I. Wichterle, J. Linek, Z. Wagner et al. · Landolt-Börnstein - Group IV Physical Chemistry

$ PaywallDOI ↗

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

Fonti dei dati

📊 PubChem CID 7900 — NIH
🔬 NIST WebBook — spektroskopia
🌐 Wikidata
💊 ChEMBL — bioaktywność

Acquista nel negozio

Propylene glycol monomethyl ether (PM) →

Molecole correlate

Dipropylene glycol mono propyl ether CAS 35884-42-5 · C10H22O3 Sodium Lauryl Ether Sulfate CAS 68585-34-2 Diethylene glycol dimethyl ether CAS 110-71-4 · C4H10O2 Ethyl acetate CAS 141-78-6 · C4H8O2 Maleic anhydride CAS 108-31-6 · C4H2O3 Citric Acid Monohydrate CAS 5949-29-1 · C₆H₁₀O₈