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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 178903928Generated: October 23, 2026

2-Acetylbutyrolactone

https://huagongshe.com/en/chemical/178903928

2-Acetylbutyrolactone molecular structure

Identifiers & Physical Properties

CAS No.313643-49-1
Molecular formulaC6H8O3
Average molar mass128.13 g/mol
SMILESCC(=O)C1CCOC1=O
InChIKeyOMQHDIHZSDEIFH-UHFFFAOYSA-N
ChEMBLCHEMBL3187921
ChEBICHEBI:179633
EC No.208-235-2

Chemical & Physical Properties

XLogP0.1
Topological polar surface area43.4
Hydrogen bond donors0
Hydrogen bond acceptors3
Rotatable bonds1
Heavy atoms9
Formal charge0
Complexity150
Chemical classesOther Classes -> Lactones
LipidsFatty Acyls [FA] -> Fatty esters [FA07] -> Lactones [FA0704]
Physical DescriptionLiquidLiquid with an ester-like odor[Merck Index] Clear colorless to pale yellow liquid[Acros Organics MSDS]

Safety & Regulations

GHS classificationThis chemical does not meet GHS hazard criteria for 0.5% (1 of 202) of reports.WarningH315 (97.5%): Causes skin irritation [Warning Skin corrosion/irritation]P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 202 reports by companies from 15 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Regulatory informationChemical: 2(3H)-Furanone, 3-acetyldihydro-2(3H)-Furanone, 3-acetyldihydro- is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of 2(3H)-Furanone, 3-acetyldihydro- are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)Status: Active Update: 26-11-2021 https://echa.europa.eu/registration-dossier/-/registered-dossier/257152-Acetyl-gamma-butyrolactone: Does not have an individual approval but may be used under an appropriate group standard
Hazards summaryA skin and mucous membrane irritant[Merck Index] A skin and strong eye irritant[ECHA REACH Registrations] An irritant[Acros Organics MSDS] See beta-Butyrolactone and Butyrolactone.
Hazard Classes and CategoriesSkin Irrit. 2 (97.5%)