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IRIS Toxicological Review of Cerium Oxide and Cerium Compounds (Interagency Science Discussion Draft)
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Contact
- Karen A. Hammerstrom
- by phone at: 703-347-8642
- by email at: hammerstrom.karen@epa.gov
Downloads/Related Links
- Toxicological Review of Cerium Oxide and Cerium Compounds (Interagency Science Discussion Draft) (PDF) (116 pp, 663 KB, about PDF)
- IRIS Summary for Cerium Oxide and Cerium Compounds (Interagency Science Discussion Draft) (PDF) (16 pp, 177 KB, about PDF)
- OMB Comments IRIS Summary and Toxicological Review of [cerium Oxide and Cerium Compounds (Interagency Science Discussion Drafts) (PDF) (2 pp, 16 KB, about PDF)
Related Link(s)
Background
The draft Toxicological Review of Cerium Oxide and Cerium Compounds provides scientific support and rationale for the hazard identification and dose-response assessment pertaining to chronic exposure to cerium oxide and cerium compounds. In addition to serving as a fuel-borne additive, cerium is used as a polishing agent for glass mirrors, plate glass, television tubes, ophthalmic lenses, and precision optics; as a glass constituent to prevent solarization and discoloration; and as a catalyst for automobile emission control systems. The Office of Air and Radiation (OAR), Office of Transportation and Air Quality (OTAQ), has received applications for the registration of fuel-borne additives containing cerium.
This assessment contains the derivation of a chronic reference concentration, as well as a cancer characterization.
This assessment contains the derivation of a chronic reference concentration, as well as a cancer characterization.
History/Chronology
| 2005 | EPA began developing the Toxicological Review of cerium oxide and cerium compounds. |
| May 2008 | EPA released an External Review Draft for public comment and review. |
| May 2008 | EPA announced the external peer review panel meeting in a May 6, 2008, Federal Register Notice. |
| Sep 2009 | EPA hosted an interagency science discussion on the draft IRIS Summary and Toxicological Review of Cerium Oxide and Cerium Compounds. These comments are provided on this web site. |
| Sep 2009 | EPA released the Final Toxicological Review (PDF) and accompanying Summary for Cerium Oxide and Cerium Compounds to the IRIS Web site. |
Next Steps
The assessment has been finalized and loaded onto the IRIS database.
Citation
U.S. EPA. IRIS Toxicological Review of Cerium Oxide and Cerium Compounds (Interagency Science Discussion Draft). U.S. Environmental Protection Agency, Washington, D.C., 2009.