(Chem; Symb: CS2) A colorless, highly flammable and toxic liquid, bp 46oC, flash point -30oC, autoignition temperature 100oC, used as a solvent and as an intermediate in the manufacture of viscose rayon, cellophane, and carbon tetrachloride. Syn: Carbon Bisulfide. Note: Carbon disulfide is heavier than water and therefore can be extinguished by water floating on its surface