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CAS 540-42-1

CAS 540-42-1 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 540-42-1
CAS 540-42-1PubChem CID 10895

Isobutyl propionate

Isobutyl propionate appears as a colorless liquid. Less dense than water. Vapors heavier than air. May be mildly toxic by ingestion, inhalation and skin absorption. Used to make plastics. — CAMEO Chemicals

IUPAC name
2-methylpropyl propanoate
Molecular formula
C7H14O2
Molecular weight
130.18 g/mol
Exact mass
130.099379685 Da
XLogP3
2.2
Topological polar surface area
26.3 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
2
Covalent units
1
Defined stereocentres
0

Also known as

Isobutyl propanoatePropanoic acid, 2-methylpropyl esterPropionic acid, isobutyl esterFEMA No. 22128Q382JSY9TNSC-8450RefChem:149098208-746-0
16 more reported names
Propionic Acid Isobutyl Ester2-Methylpropyl propionate2-Methyl-1-propyl propanoateiso-Butyl n-propionateIsobutyl ester of propanoic acidWE(3:0(2Me)/3:0)Isobutyl propionate (natural)NSC 8450Propanoic acid 2-methylpropyl esterEINECS 208-746-0UN2394BRN 1745554UNII-8Q382JSY9TisobutylpropionatAI3-28238Isobutyl propionate, 98%
Open full PubChem recordPubChem annotations3D structure image
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 540-42-1

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No records found for this CAS number.

How CAS 540-42-1 is used on this site

CAS 540-42-1 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 540-42-1 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.