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CAS 4170-30-3

CAS 4170-30-3 matches 1 EU annex record across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 4170-30-3
CAS 4170-30-3PubChem CID 447466

Crotonaldehyde

IUPAC name
(E)-but-2-enal
Molecular formula
C4H6O
Molecular weight
70.09 g/mol
Exact mass
70.041864811 Da
XLogP3
0.5
Topological polar surface area
17.1 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
1
Covalent units
1
Defined stereocentres
0

Also known as

2-ButenalCrotonalCrotylaldehyde(2E)-but-2-enalCrotonic aldehydeMethylpropenal1-Formylpropenebeta-Methylacrolein
16 more reported names
Propylene aldehyde2-ButenaldehydeKrotonaldehydbeta-Methyl acroleinRCRA waste number U053trans-2-butenaldehydeUN 1143AI3-18303 (USDA)CHEBI:416079G72074TUW3-MethylacroleinNSC-56354RefChem:5709224-030-0123-73-9trans-Crotonaldehyde
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 4170-30-3

1 total
No records found for this CAS number.

How CAS 4170-30-3 is used on this site

CAS 4170-30-3 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 1 EU annex record shares 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 4170-30-3 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.