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 Dipropylene glycol dimethyl ether?

Dipropylene glycol dimethyl ether è un composto chimico registrato con il numero CAS 111109-77-4. Formula bruta: C8H18O3. Massa molare: 162.23 g/mol. IUPAC: 1-methoxy-3-(3-methoxypropoxy)propane.

Qual è il numero CAS di Dipropylene glycol dimethyl ether?

Il numero CAS di Dipropylene glycol dimethyl ether è 111109-77-4 — un identificativo univoco del Chemical Abstracts Service (CAS).

Qual è la formula bruta di Dipropylene glycol dimethyl ether?

Formula bruta: C8H18O3. Massa molare: 162.23 g/mol. logP (XLogP3): 0.5. PSA: 27.7 Å².

Dove acquistare Dipropylene glycol dimethyl ether?

Dipropylene glycol dimethyl ether è disponibile nel nostro negozio. Vedi il prodotto: https://epchems.online/products/dipropylene-glycol-dimethyl-ether/

Da dove provengono i dati chimici di Dipropylene glycol dimethyl ether?

I dati chimici di Dipropylene glycol dimethyl ether provengono da fonti autorevoli: PubChem (NIH). PubChem CID: 86302. Conformi al Regolamento CLP (CE 1272/2008), disponibili con licenza CC-BY 4.0.

Dipropylene glycol dimethyl ether

1-Methoxy-3-(3-methoxypropoxy)propane

CAS 111109-77-4 · C₈H₁₈O₃ · MW 162.23 g/mol

Informazioni su Dipropylene glycol dimethyl ether

Dipropylene glycol dimethyl ether è un composto chimico registrato con il numero CAS 111109-77-4, con formula bruta C₈H₁₈O₃, e massa molare di 162.23 g/mol.

La molecola contiene 29 atomi collegati da 28 legami chimici. Il nome sistematico IUPAC completo di questo composto è 1-methoxy-3-(3-methoxypropoxy)propane. 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 = 0.5 (valore positivo, composto lipofilo), superficie polare PSA = 27.7 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	C₈H₁₈O₃
Masa molowa	162.23 g/mol
IUPAC	1-methoxy-3-(3-methoxypropoxy)propane
SMILES	`COCCCOCCCOC`
InChIKey	`KWDCKLXGUZOEGM-UHFFFAOYSA-N`
logP (XLogP3)	0.5
PSA	27.7 Å²
HBD / HBA	0 / 3
PubChem CID	CID 86302 ↗

Sicurezza GHS

Sygnał: Uwaga

GHS07

Letteratura scientifica

Literatura naukowa

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

📈 Timeline publikacji (7 artykułów)

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

Synthesis of enantiopure (R)-2-(4-methoxy-3-(3-methoxypropoxy)-benzyl)-3-methylbutanoic acid—a key intermediate for the preparation of Aliskiren

Natalia Andrushko, Vasyl Andrushko, Thomas Thyrann et al. (2008) · Tetrahedron Letters

Cytowania: 11$ PaywallDOI ↗

RENIN IN COMPLEXED WITH N-({(3S,4S)-4-[(benzylsulfonyl)amino]pyrrolidin-3-yl}methyl)-4-methoxy-3-(3-methoxypropoxy)-N-(propan-2-yl)benzamide INHIBITOR

N. Ostermann (2015)

$ PaywallDOI ↗

StructureActivity Relationships and Discovery of (S)6-Isopropyl-2-methoxy-3-(3-methoxypropoxy)-10-oxo-5,10-dihydro6Hpyrido[1,2h][1,7]naphthyridine-9-carboxylic Acid (AB-452), a Novel Orally Available HBV RNA Destabilizer

$ PaywallDOI ↗

RENIN IN COMPLEXED WITH (3S,4S)-4-({[4-methoxy-3-(3-methoxypropoxy)benzoyl](propan-2-yl)amino}methyl)pyrrolidin-3-yl benzylcarbamate INHIBITOR

N. Ostermann (2014) · Worldwide Protein Data Bank

$ PaywallDOI ↗

RENIN IN COMPLEXED WITH 4-methoxy-3-(3-methoxypropoxy)-N-{[(3S,4S)-4-{[(4-methylphenyl)sulfonyl]amino}pyrrolidin-3-yl]methyl}-N-(propan-2-yl)benzamide INHIBITOR

N. Ostermann (2014) · Worldwide Protein Data Bank

$ PaywallDOI ↗

Caffeine, 8‐(3‐(Hydroxymercuri)‐2‐Methoxypropoxy)‐ 5743‐18‐0

(2012) · Sax's Dangerous Properties of Industrial Materials

$ 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 86302 — NIH
🔬 NIST WebBook — spektroskopia
🌐 Wikidata
💊 ChEMBL — bioaktywność

Acquista nel negozio

Dipropylene glycol dimethyl ether →

Molecole correlate

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