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 Epichlorohydrin?

Epichlorohydrin is een chemische verbinding, geregistreerd onder CAS-nummer 106-89-8. Brutoformule: C3H5ClO. Molaire massa: 92.52 g/mol. IUPAC: 2-(chloromethyl)oxirane.

Wat is het CAS-nummer van Epichlorohydrin?

Het CAS-nummer van Epichlorohydrin is 106-89-8 — een unieke identificatie van de Chemical Abstracts Service (CAS).

Wat is de brutoformule van Epichlorohydrin?

Brutoformule: C3H5ClO. Molaire massa: 92.52 g/mol. logP (XLogP3): 0.5. PSA: 12.5 Å².

Wat zijn de GHS-gevaren van Epichlorohydrin?

Volgens de GHS-classificatie moet Epichlorohydrin worden voorzien van de volgende gevarenaanduidingen: H226 (Ontvlambare vloeistof en damp.), H350 (Kan kanker veroorzaken.), H331 (Giftig bij inademing.), H311 (Giftig bij contact met de huid.), H301 (Giftig bij inslikken.).

Waar kan ik Epichlorohydrin kopen?

Epichlorohydrin is verkrijgbaar in onze winkel. Bekijk het product: https://epchems.online/products/epichlorohydrin/

Waar komen de chemische gegevens voor Epichlorohydrin vandaan?

De chemische gegevens voor Epichlorohydrin zijn afkomstig van gezaghebbende bronnen: PubChem (NIH), ChEMBL (EBI). PubChem CID: 7835. Conform de CLP-verordening (EG 1272/2008), beschikbaar onder de CC-BY 4.0-licentie.

Epichlorohydrin

CAS 106-89-8 · C₃H₅ClO · MW 92.52 g/mol

Over Epichlorohydrin

Epichlorohydrin is een chemische verbinding, geregistreerd onder nummer CAS 106-89-8, met de brutoformule C₃H₅ClO, en een molaire massa van 92.52 g/mol.

Het molecuul bevat 10 atomen verbonden door 10 chemische bindingen. De volledige systematische IUPAC-naam van deze verbinding is 2-(chloromethyl)oxirane. 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 = 0.5 (positieve waarde, lipofiele verbinding), polair oppervlak PSA = 12.5 Å², 0 donoren en 1 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	C₃H₅ClO
Masa molowa	92.52 g/mol
IUPAC	2-(chloromethyl)oxirane
SMILES	`C1C(O1)CCl`
InChIKey	`BRLQWZUYTZBJKN-UHFFFAOYSA-N`
logP (XLogP3)	0.5
PSA	12.5 Å²
HBD / HBA	0 / 1
PubChem CID	CID 7835 ↗

GHS-veiligheid

Sygnał: Niebezpieczeństwo

GHS02

GHS05

GHS06

GHS07

GHS08

H226 — Łatwopalna ciecz i pary

H350 — Może powodować raka

H331 — Działa toksycznie w następstwie wdychania

H311 — Działa toksycznie w kontakcie ze skórą

H301 — Działa toksycznie po połknięciu

H314 — Powoduje poważne oparzenia skóry oraz uszkodzenia oczu

H317 — Może powodować reakcję alergiczną skóry

Wetenschappelijke literatuur

Literatura naukowa

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

📈 Timeline publikacji (18 artykułów)

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

Via 2-(Chloromethyl)oxirane

C. J. Forsyth, T. J. Murray (2008) · Ethers

$ PaywallDOI ↗

2-(Chloromethyl)oxirane-Related Systems

E. Block (2008) · Sulfur, Selenium, and Tellurium

$ PaywallDOI ↗

Refractive index of 2-(chloromethyl)oxirane

Christian Wohlfarth (2017) · Optical Constants

$ PaywallDOI ↗

Molecular beam Fourier transform microwave spectra of (chloromethyl)cyclopropane and (chloromethyl)oxirane

N. Heineking, J.-U. Grabow, I. Merke (2002) · Journal of Molecular Structure

Cytowania: 11$ PaywallDOI ↗

🔓

Carboxylic acids as proton-containing nucleophiles in the reaction with (chloromethyl)oxirane

(2019) · Voprosy Khimii i Khimicheskoi Tekhnologii

Open AccessDOI ↗PDF ↗

Epichlorohydrin.

(1999) · IARC monographs on the evaluation of carcinogenic risks to humans

Review$ PaywallPubMed ↗

Epichlorohydrin.

National Toxicology Program (2011) · Report on carcinogens : carcinogen profiles

$ PaywallPubMed ↗

Epichlorohydrin.

National Toxicology Program (2002) · Report on carcinogens : carcinogen profiles

$ PaywallPubMed ↗

Epichlorohydrin.

(2004) · Report on carcinogens : carcinogen profiles

$ PaywallPubMed ↗

What are the manifestations of ocular exposure to epichlorohydrin?

Zhang Y, Li M, Le Q et al. (2014) · Journal of occupational and environmental medicine

$ PaywallDOI ↗PubMed ↗

Epoxy-functionalized polyethyleneimine modified epichlorohydrin-cross-linked cellulose aerogel as adsorbents for carbon dioxide capture.

Chen X, Lin J, Wang H et al. (2023) · Carbohydrate polymers

$ PaywallDOI ↗PubMed ↗

Formaldehyde, Polymer with (Chloromethyl)Oxirane and Phenol

(2007) · Hawley's Condensed Chemical Dictionary

$ PaywallDOI ↗

Polypropylene Glycol, (Chloromethyl)Oxirane Polymer 9072‐62‐2

(2004) · Sax's Dangerous Properties of Industrial Materials

$ PaywallDOI ↗

Polypropylene Glycol, (Chloromethyl)Oxirane Polymer 9072‐62‐2

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

$ PaywallDOI ↗

Formaldehyde, Polymer with (Chloromethyl)Oxirane and Phenol 9003‐36‐5

(2004) · Sax's Dangerous Properties of Industrial Materials

$ PaywallDOI ↗

Formaldehyde, Polymer with (Chloromethyl)Oxirane and Phenol 9003‐36‐5

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

$ PaywallDOI ↗

<i> <scp>n</scp> </i> ‐(3‐aminopropyl)‐1,3‐propanediamine Polymer With (chloromethyl)oxirane

(2007) · Hawley's Condensed Chemical Dictionary

$ PaywallDOI ↗

(Chloromethyl)oxirane <undefined optical isomer> C3H5ClO + C3H6O2 (Hydroxymethyl)oxirane

I. Wichterle, J. Linek, Z. Wagner et al. · Landolt-Börnstein - Group IV Physical Chemistry

$ 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

EPICHLOROHYDRIN · 2-(Chloromethyl)oxirane · 106-89-8 · Epichlorhydrin · 1-Chloro-2,3-epoxypropane · Glycidyl chloride · Epichlorhydrine · Chloromethyloxirane · Oxirane, (chloromethyl)- · Chloropropylene oxide · 2,3-Epoxypropyl chloride · Epichloorhydrine · (CHLOROMETHYL)OXIRANE · 1,2-Epoxy-3-chloropropane · 3-Chloro-1,2-epoxypropane

Gegevensbronnen

📊 PubChem CID 7835 — NIH
🔬 NIST WebBook — spektroskopia
🌐 Wikidata
💊 ChEMBL — bioaktywność

Kopen in de winkel

Epichlorohydrin →

Gerelateerde moleculen

L (+)-Tartaric acid CAS 87-69-4 · C4H6O6 Acetamide CAS 60-35-5 · C2H5NO Benzoic acid CAS 65-85-0 · C7H6O2 Acetic anhydride CAS 108-24-7 · C4H6O3 Dimethyl Sulfoxide CAS 67-68-5 · C2H6OS L-Valine CAS 72-18-4 · C5H11NO2