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 monomethyl ether?

Dipropylene glycol monomethyl ether è un composto chimico registrato con il numero CAS 34590-94-8. Formula bruta: C7H16O3. Massa molare: 148.20 g/mol. IUPAC: 1-(1-methoxypropan-2-yloxy)propan-2-ol.

Qual è il numero CAS di Dipropylene glycol monomethyl ether?

Il numero CAS di Dipropylene glycol monomethyl ether è 34590-94-8 — un identificativo univoco del Chemical Abstracts Service (CAS).

Qual è la formula bruta di Dipropylene glycol monomethyl ether?

Formula bruta: C7H16O3. Massa molare: 148.20 g/mol. logP (XLogP3): -0.1. PSA: 38.7 Å².

Quali sono i pericoli GHS di Dipropylene glycol monomethyl ether?

Secondo la classificazione GHS, Dipropylene glycol monomethyl ether deve riportare le seguenti indicazioni di pericolo: H320 (Provoca irritazione oculare.), H335 (Può irritare le vie respiratorie.), H336 (Può provocare sonnolenza o vertigini.), H227 (Substancja ciekła palna).

Dove acquistare Dipropylene glycol monomethyl ether?

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

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

I dati chimici di Dipropylene glycol monomethyl ether provengono da fonti autorevoli: PubChem (NIH). PubChem CID: 25484. Conformi al Regolamento CLP (CE 1272/2008), disponibili con licenza CC-BY 4.0.

Dipropylene glycol monomethyl ether

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

Informazioni su Dipropylene glycol monomethyl ether

Dipropylene glycol monomethyl ether è un composto chimico registrato con il numero CAS 34590-94-8, con formula bruta C₇H₁₆O₃, e massa molare di 148.20 g/mol.

La molecola contiene 26 atomi collegati da 25 legami chimici. Il nome sistematico IUPAC completo di questo composto è 1-(1-methoxypropan-2-yloxy)propan-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 = -0.1 (valore negativo, composto idrofilo), superficie polare PSA = 38.7 Å², 1 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	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 ↗

Sicurezza GHS

Sygnał: Uwaga

GHS07

H320 — H320

H335 — Może powodować podrażnienie dróg oddechowych

H336 — Może wywoływać uczucie senności lub zawroty głowy

H227 — Substancja ciekła palna

Letteratura scientifica

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.

Sinonimi

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

Fonti dei dati

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

Acquista nel negozio

Dipropylene glycol monomethyl ether →

Molecole correlate

L-Cysteine CAS 52-90-4 · C3H7NO2S Tert-Butanol CAS 75-65-0 · C4H10O Benzyl Alcohol CAS 100-51-6 · C7H8O Isopropyl acetate CAS 108-21-4 · C5H10O2 N-Butanol CAS 71-36-3 · C4H10O Ethylene glycol diacetate CAS 111-55-7 · C6H10O4