California EPA’s Office of Environmental Health Hazard Assessment (OEHHA) has added methyl isobutyl ketone to the list of chemicals known to the state to cause reproductive toxicity under the Safe Drinking Water and Toxic Enforcement Act of 1986 (Prop. 65). The chemical is used as a solvent for vinyl, epoxy, acrylic and natural resins, and as a synthetic flavoring adjuvant and a fruit flavoring. According to OeHHA, the listing is based on the authoritative body listing mechanism because the U.S. Environmental Protection Agency has identified it as a chemical that causes reproductive toxicity. The listing is effective March 28, 2014, and will require exposure warnings to consumers. See OEHHA News Release, March 28, 2014.