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.

Qu'est-ce que Dipropylene glycol monomethyl ether ?

Dipropylene glycol monomethyl ether est un composé chimique enregistré sous le numéro CAS 34590-94-8. Formule brute: C7H16O3. Masse molaire: 148.20 g/mol. IUPAC: 1-(1-methoxypropan-2-yloxy)propan-2-ol.

Quel est le numéro CAS de Dipropylene glycol monomethyl ether ?

Le numéro CAS de Dipropylene glycol monomethyl ether est 34590-94-8 — un identifiant unique du Chemical Abstracts Service (CAS).

Quelle est la formule brute de Dipropylene glycol monomethyl ether ?

Formule brute: C7H16O3. Masse molaire: 148.20 g/mol. logP (XLogP3): -0.1. PSA: 38.7 Å².

Quels sont les dangers GHS de Dipropylene glycol monomethyl ether ?

Selon la classification GHS, Dipropylene glycol monomethyl ether doit porter les mentions de danger suivantes : H320 (Provoque une irritation des yeux.), H335 (Peut irriter les voies respiratoires.), H336 (Peut provoquer somnolence ou vertiges.), H227 (Substancja ciekła palna).

Où acheter Dipropylene glycol monomethyl ether ?

Dipropylene glycol monomethyl ether est disponible dans notre boutique. Voir le produit : https://epchems.online/products/dipropylene-glycol-monomethyl-ether/

D'où proviennent les données chimiques de Dipropylene glycol monomethyl ether ?

Les données chimiques de Dipropylene glycol monomethyl ether proviennent de sources faisant autorité : PubChem (NIH). PubChem CID: 25484. Conformes au règlement CLP (CE 1272/2008), disponibles sous licence CC-BY 4.0.

Dipropylene glycol monomethyl ether

CAS 34590-94-8 · C₇H₁₆O₃ · MW 148.20 g/mol

À propos de Dipropylene glycol monomethyl ether

Dipropylene glycol monomethyl ether est un composé chimique enregistré sous le numéro CAS 34590-94-8, de formule brute C₇H₁₆O₃, et de masse molaire 148.20 g/mol.

La molécule contient 26 atomes reliés par 25 liaisons chimiques. Le nom systématique IUPAC complet de ce composé est 1-(1-methoxypropan-2-yloxy)propan-2-ol. Le modèle 3D interactif ci-dessus permet de visualiser l'arrangement spatial des atomes — vous pouvez le faire pivoter à la souris, zoomer avec la molette et basculer entre les modes de visualisation squelette / Ball & Stick / Space Fill.

Du point de vue des propriétés physico-chimiques, le coefficient de partage logP = -0.1 (valeur négative, composé hydrophile), surface polaire PSA = 38.7 Å², 1 donneurs et 3 accepteurs de liaisons hydrogène. Ces paramètres sont essentiels pour évaluer la biodisponibilité et l'interaction avec les biomolécules.

Les données chimiques de ce composé proviennent de PubChem (NIH NLM NCBI), l'une des plus grandes bases de données chimiques au monde. Toutes les informations sont mises à jour automatiquement et enrichies de traductions des mentions de danger GHS conformes au règlement CLP (CE 1272/2008). Le widget ci-dessus peut être utilisé à des fins éducatives, de recherche et commerciales.

Propriétés physico-chimiques

Wzór sumaryczny	C₇H₁₆O₃
Masa molowa	148.20 g/mol
IUPAC	1-(1-methoxypropan-2-yloxy)propan-2-ol
SMILES	`CC(COC(C)COC)O`
InChIKey	`WGYZMNBUZFHYRX-UHFFFAOYSA-N`
logP (XLogP3)	-0.1
PSA	38.7 Å²
HBD / HBA	1 / 3
PubChem CID	CID 25484 ↗

Sécurité GHS

Sygnał: Uwaga

GHS07

H320 — H320

H335 — Może powodować podrażnienie dróg oddechowych

H336 — Może wywoływać uczucie senności lub zawroty głowy

H227 — Substancja ciekła palna

Littérature scientifique

Literatura naukowa

11 artykułów · 1 open access · Źródła: PubMed, OpenAlex, Semantic Scholar

📈 Timeline publikacji (11 artykułów)

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

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Lactic acidosis with elevated osmolal gap after ingestion of a lighter fluid containing dipropylene glycol monomethyl ether (DPGME), a case report.

Langbroek PM, Dreijer AR, de Lange DW et al. (2022) · Clinical toxicology (Philadelphia, Pa.)

Open AccessDOI ↗PubMed ↗PDF ↗

Programmable gate delayed ion mobility spectrometry-mass spectrometry: a study with low concentrations of dipropylene-glycol-monomethyl-ether in air.

Hill CA, Thomas CL (2005) · The Analyst

$ PaywallDOI ↗PubMed ↗

Dipropylene glycol monomethyl ether: a 13-week inhalation toxicity study in rats and rabbits.

Landry TD, Yano BL (1984) · Fundamental and applied toxicology : official journal of the Society of Toxicology

$ PaywallDOI ↗PubMed ↗

Metabolism and disposition of dipropylene glycol monomethyl ether (DPGME) in male rats.

Miller RR, Hermann EA, Calhoun LL et al. (1985) · Fundamental and applied toxicology : official journal of the Society of Toxicology

$ PaywallDOI ↗PubMed ↗

Percutaneous toxicity of ethylene glycol monomethyl ether and of dipropylene glycol monomethyl ether in the rat.

Fairhurst S, Knight R, Marrs TC et al. (1989) · Toxicology

$ PaywallDOI ↗PubMed ↗

Final report on the safety assessment of PPG-2 methyl ether, PPG-3 methyl ether, and PPG-2 methyl ether acetate.

Robinson V, Bergfeld WF, Belsito DV et al. (2009) · International journal of toxicology

$ PaywallDOI ↗PubMed ↗

Modeling aggregate exposures to glycol ethers from use of commercial floor products.

Koontz M, Price P, Hamilton J et al. (2006) · International journal of toxicology

$ PaywallDOI ↗PubMed ↗

Time-weighted average sampling of airborne propylene glycol ethers by a solid-phase microextraction device.

Shih HC, Tsai SW, Kuo CH (2012) · Journal of occupational and environmental hygiene

$ PaywallDOI ↗PubMed ↗

Application of multidimensional gas chromatography-mass spectrometry to the determination of glycol ethers in air.

Kennedy ER, O'Connor PF, Grote AA (1990) · Journal of chromatography

$ PaywallDOI ↗PubMed ↗

Optimisation of solvent desorption conditions for chemical warfare agent and simulant compounds from Porapak Q using experimental design. I. Methyl salicylate and di(propylene glycol) monomethyl ether.

Muir B, Duffy HB, Moran MC (2004) · Journal of chromatography. A

$ PaywallDOI ↗PubMed ↗

Test Method for Purity of Propylene Glycol Monomethyl Ether, Dipropylene Glycol Monomethyl Ether, and Propylene Glycol Monomethyl Ether Acetate.

$ PaywallDOI ↗PDF ↗

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

Synonymes

PPG-2 methyl ether · Kino-red · RQ1X8FMQ9N · Arcosolv DPM · Glysolv DPM · Propanol, 1(or 2)-(2-methoxymethylethoxy)- · Ucar solvent 2LM · Dowanol-50B · DPGME · HISOLVE DPM · Dipropylene glycol, monomethyl ether · Dowanol 50b · ARCOSOLV · RefChem:589098 · DTXCID601766271

Sources des données

📊 PubChem CID 25484 — NIH
🔬 NIST WebBook — spektroskopia
🌐 Wikidata
💊 ChEMBL — bioaktywność

Acheter en boutique

Dipropylene glycol monomethyl ether →

Molécules apparentées

Sodium Lauryl Ether Sulfate CAS 68585-34-2 Cyclohexanol CAS 108-93-0 · C6H12O Ethyl Methyl Carbonate CAS 623-53-0 · C4H8O3 Sodium cyanide CAS 143-33-9 · CNNa Dimethylformamide CAS 68-12-2 · C3H7NO L-Menthol CAS 2216-51-5 · C10H20O