ETO 5 : The chemical ethylene oxide (1,2-epoxyethane) which has been identified by the ARB and listed as a toxic air contaminant in title 17, California Code of Regulations, section 93000
California Air Resources Board ARB (California Environmental Protection Agency), glossary of air pollution terms, Sacramento, CA, USA 2013. http://www.arb.ca.gov/html/gloss.htm, (Air Pollut - Amer) {594}