For definition of Groups, see Preamble Evaluation.
VOL.: 71 (1999) (p. 1317)
No epidemiological data relevant to the carcinogenicity of b-butyrolactone were available.
There is sufficient evidence in experimental animals for the carcinogenicity of b-butyrolactone.
b-Butyrolactone is possibly carcinogenic to humans (Group 2B).For definition of the italicized terms, see Preamble Evaluation.
Previous evaluation: Vol. 11 (1976)
See Also: Toxicological Abbreviations Butyrolactone, beta- (IARC Summary & Evaluation, Volume 11, 1976)