1,1'-thiobis(2-chloroethane). Severe irritant and vesicant of skin, eyes, and lungs. It may cause blindness and lethal lung oedema and was formerly used as a war gas. The substance has been proposed as a cytostatic and for treatment of psoriasis.

Pharmacological action: carcinogens, chemical warfare agents, dermatologic agents.

Chemical name: Ethane, 1,1'-thiobis(2-chloro-

Abbreviation: hd

(12 Dec 1998)