1. Home
  2. Library
  3. Chemicals
  4. Urethane

Urethane

CAS Number

51-79-6

Synonym

AI3-00553; Ethylurethan; Ethyl carbamate; Ethyl urethane; Leucethane; NSC-746; Pracarbamin; Pracarbamine; Urethan; Uretano

Occurrence/Use

Production of pesticide and fungicide, chemical intermediate (pharmaceuticals); component of tobacco smoke. Former use in medicine (antineoplastic)

Cancer Potency Information

Inhalation Unit Risk (μg/cubic meter)-1: 
2.9 E-4
Inhalation Slope Factor (mg/kg-day)-1: 
1.0 E+0
Oral Slope Factor (mg/kg-day)-1: 
1.0 E+0
Comments/References: 

OEHHA 2009. Air Toxics Hot Spots Program Technical Support Document for Cancer Potencies. Appendix B. Chemical-specific summaries of the information used to derive unit risk and cancer potency values. Updated 2011.

Air

Proposition 65

Chemical Status

Cancer: 
Currently listed
Reproductive Toxicity: 
Currently listed

Cancer

Listed as causing: 
Cancer
Date of Listing: 
01/01/1988
Basis for Listing: 
State's Qualified Experts

Reproductive Toxicity

Listed as causing: 
Developmental Toxicity
Developmental Toxicity
Date of Listing: 
10/01/1994
Basis for Listing: 
Authoritative Bodies-US Environmental Protection Agency

Safe Harbor Levels

Cancer
No Significant Risk Level (NSRL): 
0.7 µg/day