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Health Effects Assessment Summary (HEAST) for

Chlorobenzene

CAS: 000108-90-7


Summary of HEAST Information on-Line

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






Alternate Methods -- Subchronic and Chronic Toxicity (Other than Carcinogenicity)

Chronic [RfC]:
(see comment)
2E-2 mg/cu m

Uncertainty Factor: 10000

Route: Inhalation: intermittent

Target Organ / Critical Effect: Liver / Effects
Kidney / Effects

Species Effect Level Dose Experiment Length
Rat LOAEL 75 ppm 120 days

References
1977 Dilley, J.V. 1977. Toxic evaluation of inhaled Chlorobenzene. NIOSH, DHEW, Cincinnati, OH, Contract 210-76-0126. Cited in U.S EPA, 1985.
1989 U.S. EPA. 1989. Updated health effects assessment for Chlorobenzene. 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.

Chronic [RfC] Comments: 5E-3 mg/kg/day (see Appendix A-II, Dose Conversions on HEAST). Under review, current number subject to change.
General Comments: The subchronic and chronic inhalation [RfC] values were derived from methodology that is not current with the interim inhalation methodology used by the RfD/RfC work group.



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