Parathion

CAS RN:56-38-2

Carcinogenicity Evidence

Classification of carcinogenicity: 1) evidence in humans: no adequate data; 2) evidence in animals: limited. Overall summary evaluation of carcinogenic risk to humans is Group 3: The agent is not classifiable as to its carcinogenicity to humans. /From table/
Cancer Classification: Group C Possible Human Carcinogen
CLASSIFICATION: C; possible human carcinogen.
BASIS FOR CLASSIFICATION: Increased adrenal cortical tumors in female and male Osborne-Mendel rats and positive trends for thyroid follicular adenomas and pancreatic islet-cell carcinomas in male rats in one study.
HUMAN CARCINOGENICITY DATA: None.
ANIMAL CARCINOGENICITY DATA: Limited.
A4; Not classifiable as a human carcinogen.
Find more information on this substance at: Hazardous Substances Data Bank , TOXNET , PubMed