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 Trichloroethylene?

Trichloroethylene è un composto chimico registrato con il numero CAS 127-18-4. Formula bruta: C2Cl4. Massa molare: 165.8 g/mol. IUPAC: 1,1,2,2-tetrachloroethene.

Qual è il numero CAS di Trichloroethylene?

Il numero CAS di Trichloroethylene è 127-18-4 — un identificativo univoco del Chemical Abstracts Service (CAS).

Qual è la formula bruta di Trichloroethylene?

Formula bruta: C2Cl4. Massa molare: 165.8 g/mol. logP (XLogP3): 3.4. PSA: 0 Å².

Quali sono i pericoli GHS di Trichloroethylene?

Secondo la classificazione GHS, Trichloroethylene deve riportare le seguenti indicazioni di pericolo: H351 (Sospettato di provocare il cancro.), H411 (Tossico per gli organismi acquatici con effetti di lunga durata.).

Dove acquistare Trichloroethylene?

Trichloroethylene è disponibile nel nostro negozio. Vedi il prodotto: https://epchems.online/products/trichloroethylene-127-18-4/

Da dove provengono i dati chimici di Trichloroethylene?

I dati chimici di Trichloroethylene provengono da fonti autorevoli: PubChem (NIH), ChEMBL (EBI). PubChem CID: 31373. Conformi al Regolamento CLP (CE 1272/2008), disponibili con licenza CC-BY 4.0.

Trichloroethylene

Tetrachloroethylene

CAS 127-18-4 · C₂Cl₄ · MW 165.8 g/mol

Informazioni su Trichloroethylene

Trichloroethylene è un composto chimico registrato con il numero CAS 127-18-4, con formula bruta C₂Cl₄, e massa molare di 165.8 g/mol.

La molecola contiene 6 atomi collegati da 5 legami chimici. Il nome sistematico IUPAC completo di questo composto è 1,1,2,2-tetrachloroethene. 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 = 3.4 (valore positivo, composto lipofilo), superficie polare PSA = 0 Å², 0 donatori e 0 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	C₂Cl₄
Masa molowa	165.8 g/mol
IUPAC	1,1,2,2-tetrachloroethene
SMILES	`C(=C(Cl)Cl)(Cl)Cl`
InChIKey	`CYTYCFOTNPOANT-UHFFFAOYSA-N`
logP (XLogP3)	3.4
PSA	0 Å²
HBD / HBA	0 / 0
PubChem CID	CID 31373 ↗

Sicurezza GHS

Sygnał: Uwaga

GHS08

GHS09

H351 — Podejrzewa się, że powoduje raka

H411 — Działa toksycznie na organizmy wodne, powodując długotrwałe skutki

Letteratura scientifica

Literatura naukowa

20 artykułów · 4 open access · Źródła: PubMed, OpenAlex, Semantic Scholar

📈 Timeline publikacji (20 artykułów)

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

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Evaluación del riesgo químico por inhalación de percloroetileno en el sector de lavado en seco: comparación entre evaluación cualitativa y cuantitativa, a propósito de un caso.

Acero Mena JD, López-Castro KR, Zambrano-Carrillo MF (2025) · Archivos de prevencion de riesgos laborales

Open AccessDOI ↗PubMed ↗PDF ↗

Tetrachloroethene-dehalogenating bacteria

J. Damborský (1999) · Folia Microbiologica

Cytowania: 37$ PaywallDOI ↗

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Sorption-mediated organohalide respiration biokinetics of tetrachloroethene.

Ting Y, Lombard N, Sowers KR et al. (2026) · Water research

Open AccessDOI ↗PubMed ↗PDF ↗

Tetrachloroethene (C2Cl4)

(2011) · Gaseous Electronics

$ PaywallDOI ↗

Tetrachloroethylene Is Associated With Presence of Significant Liver Fibrosis: A National Cross-Sectional Study in US Adults.

Su Y, Dodge JL, Lee BP (2025) · Liver international : official journal of the International Association for the Study of the Liver

$ PaywallDOI ↗PubMed ↗

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Nonalcoholic Fatty Liver Disease Is a Susceptibility Factor for Perchloroethylene-Induced Liver Effects in Mice.

Cichocki JA, Furuya S, Luo YS et al. (2017) · Toxicological sciences : an official journal of the Society of Toxicology

Open AccessDOI ↗PubMed ↗PDF ↗

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Maternal long-term inhalation exposure to perchloroethylene and prenatal teratogenicity: morphometric, hormonal, and histological study.

Mirazi N, Amini E, Hosseini A et al. (2023) · Toxicology mechanisms and methods

Open AccessDOI ↗PubMed ↗PDF ↗

Tetrachloroethylene.

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

$ PaywallPubMed ↗

Mechanism of biochar functional groups in the catalytic reduction of tetrachloroethylene by sulfides.

Yang Y, Piao Y, Wang R et al. (2022) · Environmental pollution (Barking, Essex : 1987)

$ PaywallDOI ↗PubMed ↗

Biological Enhancement of Tetrachloroethene Dissolution and Associated Microbial Community Changes

$ PaywallDOI ↗

Harnessing Sewage Sludge Microbiota from Wastewater Treatment Plants for Tetrachloroethene Detoxification

$ PaywallDOI ↗

Experimental Evaluation and Mathematical Modeling of Microbially-Enhanced Tetrachloroethene (PCE) Dissolution

$ PaywallDOI ↗

A Modeling Study and Implications of Competition between Dehalococcoides ethenogenes and Other Tetrachloroethene-Respiring Bacteria

$ PaywallDOI ↗

Harnessing Sewage Sludge Microbiota from Wastewater Treatment Plants for Tetrachloroethene Detoxification

$ PaywallDOI ↗

Genomic Characterization of Dehalococcoides mccartyi Strain JNA That Reductively Dechlorinates Tetrachloroethene and Polychlorinated Biphenyls

$ PaywallDOI ↗

Tetrachloroethene reductive dehalogenase

· Springer Handbook of Enzymes

$ PaywallDOI ↗

Genomic Characterization of Dehalococcoides mccartyi Strain JNA That Reductively Dechlorinates Tetrachloroethene and Polychlorinated Biphenyls

$ PaywallDOI ↗

Bioenhanced Dissolution of a Tetrachloroethene (PCE) Pool in a Sand Tank Aquifer System

Sara Klemm

$ PaywallDOI ↗

Tetrachloroethene reductive dehalogenase—PceA

Harry Morrison (2021) · Enzyme Active Sites and their Reaction Mechanisms

$ PaywallDOI ↗

Organohalide-Respiring Bacteria in Polluted Urban Rivers Employ Novel Bifunctional Reductive Dehalogenases to Dechlorinate Polychlorinated Biphenyls and Tetrachloroethene

$ 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

TETRACHLOROETHYLENE · Tetrachloroethene · 127-18-4 · Perchloroethylene · Tetrachlorethylene · Perc · Perchlorethylene · Ethene, tetrachloro- · Ethylene tetrachloride · 1,1,2,2-Tetrachloroethylene · Ankilostin · Didakene · Perclene · Tetracap · Tetropil

Fonti dei dati

📊 PubChem CID 31373 — NIH
🔬 NIST WebBook — spektroskopia
🌐 Wikidata
💊 ChEMBL — bioaktywność

Acquista nel negozio

Trichloroethylene →

Molecole correlate

Isopropyl alcohol CAS 67-63-0 · C3H8O N-Hexane CAS 110-54-3 · C6H14 Cyclohexanol CAS 108-93-0 · C6H12O Propionic Acid CAS 79-09-4 · C3H6O2 Methylene Chloride CAS 75-09-2 · CH₂Cl₂ Diethyl phthalate (DEP) CAS 84-66-2 · C12H14O4