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Health Effects Assessment Summary (HEAST) for

Phorate

CAS: 000298-02-2


Summary of HEAST Information on-Line

Subchronic and Chronic Toxicity
Chronic [RfD]:on-Line
Subchronic [RfD]:on-Line
Notes/Comments:on-Line






Subchronic and Chronic Toxicity (Other than Carcinogenicity)

Chronic [RfD]: 2E-4 mg/kg/day
Uncertainty Factor: 200

Subchronic [RfD]:
(see comment)
2E-4 mg/kg/day

Uncertainty Factor: 200

Route: Oral: diet

Target Organ / Critical Effect: Cholinesterase / Inhibition

Species Effect Level Dose Experiment Length
Rat NOAEL 0.033 mg/kg/day 13 weeks

References
1956 Tusing T.W. 1956. 13-week subacute Thimet feeding study in male and female rats. Unpublished report of the American Cyanamid Co. Initial scientific and mini-economic review of Phorate (Thimet). Office of Pesticide Programs, U.S. EPA, Washington, DC
1985 U.S. EPA. 1985. Summary of acceptable daily intakes (adis) for oral exposure. Prepared by Environmental Criteria and Assessment Office, Cincinnati, OH. Internal review draft, May, 1985. ECAO-CIN-432.
1977 NAS (National Academy of Sciences). 1977. Drinking Water and Health. Safe Drinking Water Committee, National Research Council. NAS, Washington, DC pp. 613-620.

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



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