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The Collaborative International Dictionary
H2CS3

Sulphocarbonic \Sul`pho*car*bon"ic\, a. (Chem.) Of, pertaining to, or designating, a sulphacid, H2CSO2 (called also thiocarbonic acid), or an acid, H2CS3, analogous to carbonic acid, obtained as a yellow oily liquid of a pungent odor, and forming salts.