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CAS 79-31-2

CAS 79-31-2 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 79-31-2
CAS 79-31-2PubChem CID 6590

Isobutyric Acid

Isobutyric acid is a branched fatty acid comprising propanoic acid carrying a methyl branch at C-2. It has a role as a volatile oil component, a plant metabolite and a Daphnia magna metabolite. It is a fatty acid 4:0, a branched-chain saturated fatty acid and a methyl-branched fatty acid. It is a conjugate acid of an isobutyrate. — ChEBI

IUPAC name
2-methylpropanoic acid
Molecular formula
C4H8O2
Molecular weight
88.11 g/mol
Exact mass
88.052429494 Da
XLogP3
0.8
Topological polar surface area
37.3 Ų
Hydrogen-bond donors
1
Hydrogen-bond acceptors
2
Covalent units
1
Defined stereocentres
0

Also known as

Isobutanoic acidIsopropylformic acidDimethylacetic acidIso-butyric acidPropanoic acid, 2-methyl-Cenex RP b2alpha-Methylpropanoic acidalpha-Methylpropionic acid
16 more reported names
Acetic acid, dimethyl-Propionic acid, 2-methyl-2-METHYL-PROPIONIC ACIDKyselina isomaselnaIsobuttersaeurei-Butyric acid2-methyl-propanoic acidFEMA No. 2222alpha-isobutyric acid2,2-dimethylacetic acid8LL210O1U0NSC-62780CHEBI:161352-methpropanoic acidRefChem:5915201-195-7
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External database identifiers

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 79-31-2

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How CAS 79-31-2 is used on this site

CAS 79-31-2 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 EU annex records share this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 79-31-2 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.