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.

Wat is Triethylene glycol?

Triethylene glycol is een chemische verbinding, geregistreerd onder CAS-nummer 112-27-6. Brutoformule: C6H14O4. Molaire massa: 150.17 g/mol. IUPAC: 2-[2-(2-hydroxyethoxy)ethoxy]ethanol.

Wat is het CAS-nummer van Triethylene glycol?

Het CAS-nummer van Triethylene glycol is 112-27-6 — een unieke identificatie van de Chemical Abstracts Service (CAS).

Wat is de brutoformule van Triethylene glycol?

Brutoformule: C6H14O4. Molaire massa: 150.17 g/mol. logP (XLogP3): -1.6. PSA: 58.9 Å².

Wat zijn de GHS-gevaren van Triethylene glycol?

Volgens de GHS-classificatie moet Triethylene glycol worden voorzien van de volgende gevarenaanduidingen: H335 (Kan irritatie van de luchtwegen veroorzaken.).

Waar kan ik Triethylene glycol kopen?

Triethylene glycol is verkrijgbaar in onze winkel. Bekijk het product: https://epchems.online/products/triethylene-glycol/

Waar komen de chemische gegevens voor Triethylene glycol vandaan?

De chemische gegevens voor Triethylene glycol zijn afkomstig van gezaghebbende bronnen: PubChem (NIH), ChEMBL (EBI). PubChem CID: 8172. Conform de CLP-verordening (EG 1272/2008), beschikbaar onder de CC-BY 4.0-licentie.

Triethylene glycol

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

Over Triethylene glycol

Triethylene glycol is een chemische verbinding, geregistreerd onder nummer CAS 112-27-6, met de brutoformule C₆H₁₄O₄, en een molaire massa van 150.17 g/mol.

Het molecuul bevat 24 atomen verbonden door 23 chemische bindingen. De volledige systematische IUPAC-naam van deze verbinding is 2-[2-(2-hydroxyethoxy)ethoxy]ethanol. Het interactieve 3D-model hierboven toont de ruimtelijke rangschikking van de atomen — u kunt het met de muis draaien, met het scrollwiel inzoomen en schakelen tussen de weergavemodi skelet / Ball & Stick / Space Fill.

Wat de fysisch-chemische eigenschappen betreft, de verdelingscoëfficiënt logP = -1.6 (negatieve waarde, hydrofiele verbinding), polair oppervlak PSA = 58.9 Å², 2 donoren en 4 waterstofbrugacceptoren. Deze parameters zijn cruciaal bij de beoordeling van de biobeschikbaarheid en de interactie met biomoleculen.

De chemische gegevens voor deze verbinding zijn afkomstig van PubChem (NIH NLM NCBI), een van de grootste chemische databanken ter wereld. Alle informatie wordt automatisch bijgewerkt en verrijkt met vertalingen van GHS-gevarenaanduidingen conform de CLP-verordening (EG 1272/2008). De bovenstaande widget mag worden gebruikt voor educatieve, onderzoeks- en commerciële doeleinden.

Fysisch-chemische eigenschappen

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 ↗

GHS-veiligheid

Sygnał: Uwaga

GHS07

H335 — Może powodować podrażnienie dróg oddechowych

Wetenschappelijke literatuur

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.

Synoniemen

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

Gegevensbronnen

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

Kopen in de winkel

Triethylene glycol →

Gerelateerde moleculen

Methyl methacrylate (MMA) CAS 80-62-6 · C5H8O2 Acetamide CAS 60-35-5 · C2H5NO Adipic acid CAS 124-04-9 · C6H10O4 Dipropylene glycol monobutyl ether CAS 29911-28-2 · C10H22O3 Diethylene glycol dimethyl ether CAS 111-96-6 · C6H14O3 Ethyl acetate CAS 141-78-6 · C4H8O2