COSCl2

Thiophosgene, with the chemical formula COSCl2, is a toxic and unstable compound. It is an organosulfur compound and a thiocarbonyl halide. Thiophosgene is a colorless liquid that decomposes readily upon exposure to heat or moisture, releasing toxic gases. It possesses a pungent odor.

The synthesis of thiophosgene can be achieved through various methods, often involving the reaction of carbon disulfide with chlorine. Due to its reactivity, it is typically prepared and used in situ or handled with extreme care in specialized laboratory settings. Its instability limits its widespread commercial applications.

Thiophosgene is a highly reactive electrophile. It participates in various chemical reactions, notably in the synthesis of sulfur-containing organic compounds such as isothiocyanates and thiocarbamates. These reactions are important in organic synthesis, though the hazardous nature of thiophosgene necessitates careful consideration of safety protocols. Due to its toxicity, direct contact or inhalation should be strictly avoided.