The Office of Environmental Health Hazard Assessment (OEHHA) is adding 4-methylimidazole (CAS No. 822-36-6) to the list of chemicals known to the state to cause cancer for purposes of the Safe Drinking Water and Toxic Enforcement Act of 1986 (Proposition 65). The listing of 4-methylimidazole is effective January 7, 2011.
California OEHHA added 4-methylimidazole (4-MEI), a byproduct of ammonia-process caramel color, to the Proposition 65 list of chemicals known to cause cancer, effective January 7, 2011.