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.

What is Maleic anhydride?

Maleic anhydride is a chemical compound registered under CAS number 108-31-6. Molecular formula: C4H2O3. Molar mass: 98.06 g/mol. IUPAC: furan-2,5-dione.

What is the CAS number of Maleic anhydride?

The CAS number of Maleic anhydride is 108-31-6 — a unique Chemical Abstracts Service (CAS) identifier.

What is the molecular formula of Maleic anhydride?

Molecular formula: C4H2O3. Molar mass: 98.06 g/mol. logP (XLogP3): -0.1. PSA: 43.4 Å².

What are the GHS hazards of Maleic anhydride?

Under the GHS classification, Maleic anhydride must be labelled with the following hazard statements: H302 (Harmful if swallowed), H372 (Causes damage to organs through prolonged or repeated exposure), H314 (Causes severe skin burns and eye damage), H318 (Causes serious eye damage), H334 (May cause allergy or asthma symptoms or breathing difficulties if inhaled).

Where can I buy Maleic anhydride?

Maleic anhydride is available in our shop. View the product: https://epchems.online/products/maleic-anhydride/

Where does the chemical data for Maleic anhydride come from?

Chemical data for Maleic anhydride comes from authoritative sources: PubChem (NIH). PubChem CID: 7923. Compliant with the CLP Regulation (EC 1272/2008), available under the CC-BY 4.0 licence.

Maleic anhydride

CAS 108-31-6 · C₄H₂O₃ · MW 98.06 g/mol

About Maleic anhydride

Maleic anhydride is a chemical compound registered under number CAS 108-31-6, with the molecular formula C₄H₂O₃, and a molar mass of 98.06 g/mol.

The molecule contains 9 atoms connected by 9 chemical bonds. The full systematic IUPAC name of this compound is furan-2,5-dione. The interactive 3D model above lets you view the spatial arrangement of the atoms — you can rotate it with the mouse, zoom with the scroll wheel, and switch between skeletal / Ball & Stick / Space Fill visualization modes.

In terms of physicochemical properties, the partition coefficient logP = -0.1 (negative value, a hydrophilic compound), polar surface area PSA = 43.4 Å², 0 donors and 3 hydrogen bond acceptors. These parameters are key when assessing bioavailability and interaction with biomolecules.

Chemical data for this compound comes from PubChem (NIH NLM NCBI), one of the world's largest chemical databases. All information is updated automatically and enriched with GHS hazard statement translations compliant with the CLP Regulation (EC 1272/2008). The widget above may be used for educational, research and commercial purposes.

Physicochemical properties

Wzór sumaryczny	C₄H₂O₃
Masa molowa	98.06 g/mol
IUPAC	furan-2,5-dione
SMILES	`C1=CC(=O)OC1=O`
InChIKey	`FPYJFEHAWHCUMM-UHFFFAOYSA-N`
logP (XLogP3)	-0.1
PSA	43.4 Å²
HBD / HBA	0 / 3
PubChem CID	CID 7923 ↗

GHS safety

Sygnał: Niebezpieczeństwo

GHS05

GHS07

GHS08

H302 — Działa szkodliwie po połknięciu

H372 — Powoduje uszkodzenie narządów poprzez długotrwałe lub powtarzane narażenie

H314 — Powoduje poważne oparzenia skóry oraz uszkodzenia oczu

H318 — Powoduje poważne uszkodzenie oczu

H334 — Może powodować objawy alergii lub astmy lub trudności w oddychaniu w następstwie wdychania

H317 — Może powodować reakcję alergiczną skóry

Scientific literature

Literatura naukowa

11 artykułów · 9 open access · Źródła: PubMed, OpenAlex, Semantic Scholar

📈 Timeline publikacji (11 artykułów)

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

🔓

Potent anti-inflammatory effect of a novel furan-2,5-dione derivative, BPD, mediated by dual suppression of COX-2 activity and LPS-induced inflammatory gene expression via NF-κB inactivation.

et al. (2012)

Cytowania: 26Open AccessDOI ↗PubMed ↗PDF ↗

🔓

Synthesis and PGE(2) production inhibition of 1H-furan-2,5-dione and 1H-pyrrole-2,5-dione derivatives.

et al. (2010)

Cytowania: 19Open AccessDOI ↗PubMed ↗PDF ↗

🔓

Atypical Antidepressant Activity of 3,4-Bis(3,4-Dimethoxyphenyl) Furan-2,5-Dione Isolated from Heart Wood of Cedrus deodara, in Rodents.

et al. (2014)

Cytowania: 11Open AccessDOI ↗PubMed ↗PDF ↗

🔓

Crystal structure of 3-(tri-phenyl-phosphoranyl-idene)-2,5-di-hydro-furan-2,5-dione tetra-hydro-furan monosolvate.

et al. (2018)

Open AccessDOI ↗PubMed ↗PDF ↗

Kinetic fall-off behavior for the Cl + Furan-2,5-dione (C4H2O3, maleic anhydride) reaction.

et al. (2021)

$ PaywallDOI ↗PubMed ↗

🔓

New naphtho[2,1-b]furan-2,5-dione and isocoumarin derivatives from bambusicolous fungus Gelatinomyces siamensis.

et al. (2026)

Open AccessDOI ↗PubMed ↗PDF ↗

🔓

3,4-Bis[4-(4-meth-oxy-phen-oxy)phen-yl]-2,5-dihydro-furan-2,5-dione.

et al. (2011)

Open AccessDOI ↗PubMed ↗PDF ↗

🔓

Crystal structure of pseudoguainolide

Noureddine Beghidja, Samir Benayache, Fadila Benayache et al. (2015) · Acta Crystallographica Section E: Crystallographic Communications

Open AccessDOI ↗PDF ↗

🔓

Aromaticine, a sesquiterpene lactone from Amblyopappus pusillus

Matías López-Rodríguez, Luis Alberto Loyola, Jorge Bórquez et al. (2008) · Acta Crystallographica Section E

Open AccessDOI ↗PDF ↗

[Synthesis and antiproliferative properties of glycosides of bis(indolyl)furan-2,5-dione and bis(indolyl)-1H-pyrrol-2,5-dione].

et al. (1996)

Cytowania: 3$ PaywallPubMed ↗

🔓

BENZOIC ACID MALEIC ANHYDRIDE BENZOIC ACID MALEIC ANHYDRIDE BENZOIC ACID MALEIC ANHYDRIDE.

(1961)

Open AccessDOI ↗PDF ↗

Dane z PubMed (NIH NLM), OpenAlex (CC0), Semantic Scholar (AI2). AI Summary wygenerowane przez Semantic Scholar TLDR. Artykuły z ikoną wymagają płatnego dostępu.

Synonyms

MALEIC ANHYDRIDE · furan-2,5-dione · 2,5-Furandione · 108-31-6 · Toxilic anhydride · Maleic acid anhydride · cis-Butenedioic anhydride · Dihydro-2,5-dioxofuran · Maleinanhydrid · RCRA waste number U147 · 2,5-Furanedione · Anhydrid kyseliny maleinove · CHEBI:474859 · V5877ZJZ25 · NSC-137651

Data sources

📊 PubChem CID 7923 — NIH
🔬 NIST WebBook — spektroskopia
🌐 Wikidata
💊 ChEMBL — bioaktywność

Buy in the shop

Maleic anhydride →

Related molecules

Acetamide CAS 60-35-5 · C2H5NO Diethylene glycol CAS 111-46-6 · C4H10O3 Ethylene glycol diacetate CAS 111-55-7 · C6H10O4 Citric acid monohydrate CAS 77-92-9 · C6H8O7 Sodium persulfate CAS 7775-27-1 · Na₂O₈S₂ Dimethyl Sulfoxide CAS 67-68-5 · C2H6OS