2-Chloroethyl 2-hydroxyethyl sulfide 2-Chloroethyl-2'-hydroxyethyl sulfide 2-Hydroxyethyl 2-chloroethyl sulfide 693-30-1 Ethanol, 2-(2-chloro-ethylthio)- Ethanol, 2-[(2-chloroethyl)thio]- HSM Half mustard gas Half sulfur mustard Hemisulfur mustard Mustard chlorohydrin NSC30024 Sulfide, 2-chloroethyl 2-hydroxyethyl Sulfur half-mustard WLN: Q2S2G