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 Triethylene glycol?

Triethylene glycol è un composto chimico registrato con il numero CAS 112-27-6. Formula bruta: C6H14O4. Massa molare: 150.17 g/mol. IUPAC: 2-[2-(2-hydroxyethoxy)ethoxy]ethanol.

Qual è il numero CAS di Triethylene glycol?

Il numero CAS di Triethylene glycol è 112-27-6 — un identificativo univoco del Chemical Abstracts Service (CAS).

Qual è la formula bruta di Triethylene glycol?

Formula bruta: C6H14O4. Massa molare: 150.17 g/mol. logP (XLogP3): -1.6. PSA: 58.9 Å².

Quali sono i pericoli GHS di Triethylene glycol?

Secondo la classificazione GHS, Triethylene glycol deve riportare le seguenti indicazioni di pericolo: H335 (Può irritare le vie respiratorie.).

Dove acquistare Triethylene glycol?

Triethylene glycol è disponibile nel nostro negozio. Vedi il prodotto: https://epchems.online/products/triethylene-glycol/

Da dove provengono i dati chimici di Triethylene glycol?

I dati chimici di Triethylene glycol provengono da fonti autorevoli: PubChem (NIH), ChEMBL (EBI). PubChem CID: 8172. Conformi al Regolamento CLP (CE 1272/2008), disponibili con licenza CC-BY 4.0.

Triethylene glycol

CAS 112-27-6 · C₆H₁₄O₄ · MW 150.17 g/mol

Informazioni su Triethylene glycol

Triethylene glycol è un composto chimico registrato con il numero CAS 112-27-6, con formula bruta C₆H₁₄O₄, e massa molare di 150.17 g/mol.

La molecola contiene 24 atomi collegati da 23 legami chimici. Il nome sistematico IUPAC completo di questo composto è 2-[2-(2-hydroxyethoxy)ethoxy]ethanol. 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 = -1.6 (valore negativo, composto idrofilo), superficie polare PSA = 58.9 Å², 2 donatori e 4 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	C₆H₁₄O₄
Masa molowa	150.17 g/mol
IUPAC	2-[2-(2-hydroxyethoxy)ethoxy]ethanol
SMILES	`C(COCCOCCO)O`
InChIKey	`ZIBGPFATKBEMQZ-UHFFFAOYSA-N`
logP (XLogP3)	-1.6
PSA	58.9 Å²
HBD / HBA	2 / 4
PubChem CID	CID 8172 ↗

Sicurezza GHS

Sygnał: Uwaga

GHS07

H335 — Może powodować podrażnienie dróg oddechowych

Letteratura scientifica

Literatura naukowa

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

📈 Timeline publikacji (8 artykułów)

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

Isobaric Vapor–Liquid Equilibrium for Four Binary Systems of Ethane-1,2-diol, Butane-1,4-diol, 2-(2-Hydroxyethoxy)ethan-1-ol, and 2-[2-(2-Hydroxyethoxy)ethoxy]ethanol at 10.0 kPa, 20.0 kPa, and 40.0 kPa

Changsheng Yang, Yankai Sun, Zhenli Qin et al. (2014) · Journal of Chemical & Engineering Data

Cytowania: 14$ PaywallDOI ↗

Triethylene glycol HO(CH2CH2O)3H.

Ballantyne B, Snellings WM (2007) · Journal of applied toxicology : JAT

Review$ PaywallDOI ↗PubMed ↗

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Triethylene glycol, an active component of Ashwagandha (Withania somnifera) leaves, is responsible for sleep induction.

Kaushik MK, Kaul SC, Wadhwa R et al. (2017) · PloS one

Open AccessDOI ↗PubMed ↗PDF ↗

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Triethylene Glycol Can Be Predeployed as a Safe Virus-Killing Indoor Air Treatment.

Goldman E, Choueiri TK, Mainelis G et al. (2022) · The Journal of infectious diseases

Open AccessDOI ↗PubMed ↗PDF ↗

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Bioinformatics and Molecular Insights to Anti-Metastasis Activity of Triethylene Glycol Derivatives.

Malik V, Garg S, Afzal S et al. (2020) · International journal of molecular sciences

Open AccessDOI ↗PubMed ↗PDF ↗

Terminal Structure of Triethylene Glycol-Tethered Chains on β-Cyclodextrin-Threaded Polyrotaxanes Dominates Temperature Responsivity and Biointeractions.

Ohashi M, Tamura A, Yui N (2021) · Langmuir : the ACS journal of surfaces and colloids

$ PaywallDOI ↗PubMed ↗

Triethylene glycol poisoning treated with intravenous ethanol infusion.

Vassiliadis J, Graudins A, Dowsett RP (1999) · Journal of toxicology. Clinical toxicology

$ PaywallDOI ↗PubMed ↗

Volumetric, Acoustic and Refractive Behavior of Acid Gas Absorbers: NVinyl-2-pyrrolidinone and Glycol Ethers (2-(2-Ethoxyethoxy)ethanol, 2(2-Butoxyethoxy)ethanol and 2(2-(2-Methoxyethoxy)ethoxy)ethanol)

$ 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

TRIETHYLENE GLYCOL · 112-27-6 · Triglycol · 2,2'-(Ethane-1,2-diylbis(oxy))diethanol · 2,2'-Ethylenedioxydiethanol · 2-[2-(2-Hydroxyethoxy)ethoxy]ethanol · Trigen · Triethylenglykol · Triethyleneglycol · 1,2-Bis(2-hydroxyethoxy)ethane · 2,2'-Ethylenedioxybis(ethanol) · 3,6-Dioxaoctane-1,8-diol · 2,2'-(Ethylenedioxy)diethanol · 2,2'-Ethylenedioxyethanol · Di-beta-hydroxyethoxyethane

Fonti dei dati

📊 PubChem CID 8172 — NIH
🔬 NIST WebBook — spektroskopia
🌐 Wikidata
💊 ChEMBL — bioaktywność

Acquista nel negozio

Triethylene glycol →

Molecole correlate

Diethylene glycol dimethyl ether CAS 111-96-6 · C6H14O3 Propylene Glycol Ethyl Ether CAS 1569-02-4 · C5H12O2 Propylene glycol monomethyl ether acetate (PMA) CAS 108-65-6 · C6H12O3 Vinyl acetate CAS 108-05-4 · C4H6O2 L-Menthol CAS 2216-51-5 · C10H20O Butyl glycol CAS 111-76-2 · C6H14O2