QL sulfide (CV), also known as EA-2276, is an isomer of the nerve agent VX. It is a sulfide of the chemical QL, or isopropyl aminoethylmethyl phosphonite.McGarvey, David J. (DEVCOM CBC); Creasy, William R. (Leidos Corporation); and Kinnan, Mark K. (Sandia National Laboratories). Reaction of QL with Li3N+H2O for the Tactical Disablement Project. CCDC CBC-TR-1722. December 2020
Synthesis QL sulfide is manufactured by reacting QL with sulfur.National Research Council, et al. Systems and Technologies for the Treatment of Non-stockpile Chemical Warfare Materiel, (Google Books), National Academies Press, 2002, p. 14, (), accessed October 21, 2008.Croddy, Eric and Wirtz, James J. Weapons of Mass Destruction: An Encyclopedia of Worldwide Policy, Technology, and History, (Google Books), ABC-CLIO, 2005, p. 238, (), accessed October 21, 2008.
Uses in chemical warfare QL sulfide is an isomer of VX and readily converts to it.
The toxicity of QL sulfide is unknown but the fact that it easily isomerizes into VX makes it particularly dangerous.
It is the intermediate in the last step of VX production and binary VX deployment.
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