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Health Effects Assessment Summary (HEAST) for

Phthalic Anhydride

CAS: 000085-44-9


Summary of HEAST Information on-Line

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






Subchronic and Chronic Toxicity (Other than Carcinogenicity)

Subchronic [RfD]:
(see comment)
2E+0 mg/kg/day

Uncertainty Factor: 1000

Route: Oral: diet

Target Organ / Critical Effect: Lung / Histopathology
Kidney / Histopathology

Species Effect Level Dose Experiment Length
Mouse LOAEL 1562 mg/kg/day 104 weeks

References
1979 NCI (National Cancer Institute). 1979. Bioassay of Phthalic Anhydride for possible carcinogenicity. NCI Carcinogenesis Tech Rep Ser No. 159. NTIS PB293594.
1988 U.S. EPA. 1988. RfD/RfC Work Group.

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





Chronic [RfC]: 1.2E-1 mg/cu m
Uncertainty Factor: 300

Subchronic [RfC]:
(see comment)
1.2E-1 mg/cu m

Uncertainty Factor: 300

Route: Inhalation: intermittent

Target Organ / Critical Effect: Nose / Rhinitis
Lungs / Bronchitis

Species Effect Level Dose Experiment Length
Human LOAEL 0.1 mg/cu m 12 years

References
1988 Nielsen J., H. Welinder, A. Schutz and S. Skerfving. 1988. Specific serum antibodies against Phthalic Anhydride in occupationally exposed subjects. J Allergy Clin Immunol. 82: 126-33.
1992 U.S. EPA. 1992. Health and enviornmental effects documentfor Phthalic Anhydride. Prepared by the Office of Health and Environmental Assessment, Environmental Criteria and Assessment Office, Cincinnati, OH for the Office of Solid Waste and Emergency Response, Washington, DC

Subchronic [RfC] Comments: The chronic inhalation [RfC] was adopted as the subchronic inhalation [RfC].



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