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Health Effects Assessment Summary (HEAST) for

Trichlorophenoxy) Propionic Acid, 2(2,4,5-

CAS: 000093-72-1


Summary of HEAST Information on-Line

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






Subchronic and Chronic Toxicity (Other than Carcinogenicity)

Subchronic [RfD]:
(see comment)
8E-3 mg/kg/day

Uncertainty Factor: 100

Route: Oral: diet

Target Organ / Critical Effect: Liver / Histopathology

Species Effect Level Dose Experiment Length
Dog NOEL 0.75 mg/kg/day 2 years

References
1978 Gehring P.J. and J.E. Betso. 1978. Phenoxy Acids: Effects and fate in mammals. In: Chlorinated Phenoxy Acids and their Dioxins. Vol 27. C Ramel Ed. Ecol Bull, Stockholm. pp. 122-133
1966 Mullison W.R. 1966. Some toxicological aspects of Silvex. In: Proc 19th Ann Meet Southern Weed Conference, Jacksonville, FL. pp. 420-435.
1988 U.S. EPA. 1988. RfD/RfC Work Group.

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



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