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IRIS Toxicological Review of Urea (Interagency Science Discussion Draft)
Archive disclaimer
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Contact
- Norman Birchfield
- by phone at: 703-347-0174
- by fax at: 703-347-8699
- by email at: birchfield.norman@epa.gov
- by fax at: 703-347-8699
Downloads/Related Links
- IRIS Toxicological Review of Urea (Interagency Science Discussion Draft) (PDF) (96 pp, 701 KB, about PDF)
- Urea Summary (Interagency Science Discussion Draft) (PDF) (12 pp, 71 KB, about PDF)
- EPA's Response & Interagency Science Discussion Comments (PDF) (3 pp, 39 KB, about PDF)
Related Link(s)
- IRIS Toxicological Review of Urea (Interagency Science Consultation Draft)
- IRIS Toxicological Review of Urea (External Review Draft)
Background
The draft Toxicological Review of Urea provides scientific support and rationale for the hazard and dose-response assessment pertaining to chronic exposure to Urea. Urea, also known as carbamide, is an endogenous product of protein and amino acid catabolism. It can also be produced synthetically by combining ammonia, carbon monoxide, and sulfur in methanol. Urea is utilized in diesel selective catalyst reduction, in fertilizers and animal feed, plastics, flame-proofing agents, adhesives, flavoring agents and consumer goods such as liquid soaps, detergents and household cleaning products.
History/Chronology
| Jun 2010 | EPA hosted the interagency science consultation on the draft Toxicological Review of Urea. |
| Sep 2010 | EPA released the external review draft for public review and comment. EPA also announced a public listening session on Nov 16, 2010. [Federal Register September 28, 2010] |
| Nov 2010 | EPA announced the external peer review meeting to be held on December 13, 2010. [Federal Register Nov 10, 2010] |
| Jan 2011 | EPA released the comments from the external review workshop. |
| Jun 2011 | EPA hosted an interagency science discussion on the review of the draft Toxicological Review of Urea. |
| Jul 2011 | EPA released the final toxicological review and IRIS Summary for Urea and the interagency review draft with interagency review comments. |
Next Steps
This assessment has been loaded into the IRIS Web site and Database.
Citation
U.S. EPA. IRIS Toxicological Review of Urea (Interagency Science Discussion Draft). U.S. Environmental Protection Agency, Washington, DC, EPA/635/R-10/005D, 2011.