Phosgene : Carbonyl chloride; a colorless liquid below 8.2 degrees Celsius, but an extremely poisonous gas at ordinary temperatures; it is an insidious gas, since it is not immediately irritating, even when fatal concentrations are inhaled
US Army Center for Health Promotion and Preventive Medicine CHPPM, TG 204 Glossary of Terms For Nuclear, Biological, and Chemical Agents And Defense Equipment (Section 5 - Chemical Terms), MD, USA 2001. http://www.au.af.mil/au/awc/awcgate/army/tg204.pdf , (DfnsEqu/Chem - Amer) {490}
Madison County North Carolina Government, Madison County Emergency Operations Plan Glossary (Section 5: Chemical Terms), NC, USA 2009. http://www.madisoncountync.org/eop/Madison_EOP_PDF /Glossary.pdf, (CBRNEmr - Amer) {877}