Editing Phosgene (section)

====Combustion====
[[Carbon tetrachloride]] ({{chem2|CCl4}}) can turn into phosgene when exposed to heat in air. This was a problem as carbon tetrachloride is an effective fire suppressant and was formerly in widespread use in [[fire extinguisher]]s.<ref name="Burke">{{cite book |last=Burke |first=Robert |title=Fire Protection: Systems and Response |date=2007-11-06 |publisher=CRC Press |isbn=978-0-203-48499-9 |pages=209}}</ref> There are reports of fatalities caused by its use to fight fires in [[confined space]]s.<ref>{{cite journal |last1=Fieldner |first1=A. C. |last2=Katz |first2=S. H. |last3=Kinney |first3=S. P. |last4=Longfellow |first4=E. S. |date=1920-10-01 |title=Poisonous gases from carbon tetrachloride fire extinguishers |url=https://www.sciencedirect.com/science/article/pii/S0016003220914941 |access-date=2022-02-03 |journal=Journal of the Franklin Institute |volume=190 |issue=4 |pages=543–565 |language=en |doi=10.1016/S0016-0032(20)91494-1}}</ref> Carbon tetrachloride's generation of phosgene and its own toxicity mean it is no longer used for this purpose.<ref name="Burke" />