Carbon Monoxide

CAS Number

630-08-0

Synonym

Carbonic oxide; Exhaust gas; Flue gas

Occurrence/Use

Fuel in industrial operations, reducing agent; component of tobacco smoke and other incomplete combustion emissions

Cancer Potency Information

Latest Criteria:	Acute Reference Exposure Levels

Air

Acute RELs

Acute REL (μg/m3):	23000
Species:	Human
Acute REL Toxicologic Endpoint:	Cardiovascular system
Acute REL Target Organs:	Cardiovascular system
Severity:	Mild*
Last Acute REL Revision:	1999
Acute Reference Exposure Levels Comments:	*Because angina is a severe effect, there is no level protective against mild adverse effects. Reference Exposure Level (level protective against severe adverse effects): 20 ppm (23 mg/m³) https://oehha.ca.gov/media/downloads/crnr/acutea-c-1.pdf OEHHA 2008. Technical Supporting Document for Noncancer RELs, Appendix D2.

Proposition 65

Chemical Status

Reproductive Toxicity:	Currently listed

Reproductive Toxicity

Listed as causing:	Developmental Toxicity
Developmental Toxicity
Date of Listing:	07/01/1989
Basis for Listing:	State's Qualified Experts