EPA Home PageSuperfund Risk Assessment Home Page


Health Effects Assessment Summary (HEAST) for

Cyclopentadiene

CAS: 000542-92-7


Summary of HEAST Information on-Line

Alternative Methods
Subchronic [RfC]:on-Line
Notes/Comments:on-Line






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

Subchronic [RfC]:
(see comment)
3E+0 mg/cu m

Uncertainty Factor: 100

Route: Inhalation: intermittent

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

Species Effect Level Dose Experiment Length
Rat NOEL 87.3 mg/kg/day 194 days

References
1987 Dow. 1987. Unpublished data. Dow Chemical. U.SA, Midland, MI.
1987 U.S. EPA. 1987. Health and environmental effects document for Cyclopentadiene and Dicyclopentadiene. 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: 9E-1 mg/kg/day (see Appendix A-II, Dose Conversions on HEAST).
General Comments: The subchronic inhalation [RfC] value was derived from methodology that is not current with the interim inhalation methodology used by the RfD/RfC work group.



[ Risk Assessment Home ]
[ EPA Home | OSWER Home | Superfund Home ]
[ Search EPA | Search Superfund | Whats New | Contact Us ]

Horizontal Rule
URL: http://risk.lsd.ornl.gov/epa/heast/heast_select.htm
This page was last updated on: March 1, 2000
Site maintained by: Office of Emergency and Remedial Response
Hofmann.Lee@epamail.epa.gov

Horizontal Rule