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Health Effects Assessment Summary (HEAST) for

Parathion

CAS: 000056-38-2


Summary of HEAST Information on-Line

Subchronic and Chronic Toxicity
Chronic [RfD]:on-Line
Subchronic [RfD]:on-Line
Notes/Comments:on-Line
Carcinogenicity
EPA Group:IRIS






Subchronic and Chronic Toxicity (Other than Carcinogenicity)

Chronic [RfD]: 6E-3 mg/kg/day
Uncertainty Factor: 10

Subchronic [RfD]:
(see comment)
6E-3 mg/kg/day

Uncertainty Factor: 10

Route: Oral

Target Organ / Critical Effect: Cholinesterase / Decreased cholinesterase activity

Species Effect Level Dose
Human NOAEL 0.064 mg/kg/day

References
1987 U.S. EPA. 1987. Health effects assessment for Parathion. Prepared by the Office of Health and Environmental Assessment, Environmental Criteria and Assessment Office, Cincinnati, OH for the Office of Emergency and Remedial Response, Washington, DC

Subchronic [RfD] Comments: The chronic oral [RfD] was adopted as the subchronic oral [RfD].



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