beta-Butyrolactone

CAS Number

3068-88-0

Synonym

3-Hydroxybutyric acid, bets-lactone; 4-Methyl-2-oxetanone

Occurrence/Use

Building block for organic synthesis

beta-Butyrolactone

Cancer Potency Information

Latest Criteria: Proposition 65 NSRLs/MADLs
Inhalation Unit Risk (μg/cubic meter)-1: 2.9 E-4
Inhalation Slope Factor (mg/kg-day)-1: 1.0 E+0
Oral Slope Factor (mg/kg-day)-1: 1.0 E+0
Comments/References:

OEHHA 1992. Expedited Cancer Potency Values and Proposed Regulatory Levels for Certain Proposition 65 Carcinogens. 

Proposition 65

Chemical Status

Cancer: Currently listed

Cancer

Cancer - Listing Mechanism
State's Qualified Experts
Listed as causing : Listed as causing: Cancer
Date of Listing:

Safe Harbor Levels

No Significant Risk Level (NSRL)
0.7 µg/day
Cancer
Last NSRL/MADL Revision: 1992

Documents, Presentations, and Publications

Cancer: