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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 79080Generated: October 25, 2026

2-Butenoyl chloride

https://huagongshe.com/en/chemical/79080

2-Butenoyl chloride molecular structure

Identifiers & Physical Properties

CAS No.10487-71-5
Molecular formulaC4H5ClO
Average molar mass104.53 g/mol
Monoisotopic mass104.0028925 g/mol
SMILESCC=CC(=O)Cl
InChIKeyRJUIDDKTATZJFE-UHFFFAOYSA-N
PubChem CID79080
EC No.234-010-3
DTXSIDDTXSID2065096

Chemical & Physical Properties

XLogP1.6
Topological polar surface area17.1
Hydrogen bond donors0
Hydrogen bond acceptors1
Rotatable bonds1
Heavy atoms6
Formal charge0
Complexity75

Safety & Regulations

GHS classificationDangerH226 (100%): Flammable liquid and vapor [Warning Flammable liquids]H314 (100%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]H318 (94.1%): Causes serious eye damage [Danger Serious eye damage/eye irritation]H335 (100%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposureRespiratory tract irritation]P210, P233, P240, P241, P242, P243, P260, P261, P264, P264+P265, P271, P280, P301+P330+P331, P302+P361+P354, P303+P361+P353, P304+P340, P305+P354+P338, P316, P317, P319, P321, P363, P370+P378, P403+P233, P403+P235, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 17 reports by companies from 2 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website.
Regulatory informationChemical: 2-Butenoyl chlorideCrotonoyl chloride (mixture of cis- and trans isomers): Does not have an individual approval but may be used under an appropriate group standard
Other safety informationIMAP assessments - 2-Butenoyl chloride: Human health tier I assessment
Hazard Classes and CategoriesFlam. Liq. 3 (100%)Skin Corr. 1B (100%)Eye Dam. 1 (94.1%)STOT SE 3 (100%)