Title: Hemisulfur Mustard
CAS Registry Number: 693-30-1
CAS Name: 2-(2-Chloroethylthio)ethanol
Additional Names: 2-chloro-2¢-hydroxydiethyl sulfide; 2-chloroethyl 2-hydroxyethyl sulfide; b-chloroethyl b-hydroxyethyl thioether; mustard chlorohydrin; semi-mustard gas; semisulfur mustard
Molecular Formula: C4H9ClOS
Molecular Weight: 140.63
Percent Composition: C 34.16%, H 6.45%, Cl 25.21%, O 11.38%, S 22.80%
Line Formula: ClCH2CH2SCH2CH2OH
Literature References: Prepn: Ogston et al., Trans. Faraday Soc. 44, 45 (1948); Grant, Kinsey, J. Am. Chem. Soc. 68, 2075 (1946); Fuson, Ziegler, J. Org. Chem. 11, 510 (1946); Rueggeberg et al., ibid. 13, 110 (1948); Tsou et al., ibid. 26, 4987 (1961).
Properties: Oily, somewhat hygroscopic liquid. bp0.6 100° (Fuson); bp0.5-0.75 87°; bp6 44.5° (Rueggeberg). nD20 1.5188; nD24.5 1.5205. Sol in water; miscible with bis(2-chloroethyl) sulfide, thiodiglycol. Unstable, forming sulfonium salts at room temp or in solns with ethanol or chloroform.
Boiling point: bp0.6 100° (Fuson); bp0.5-0.75 87°; bp6 44.5° (Rueggeberg)
Index of refraction: nD20 1.5188; nD24.5 1.5205 |