Chromium(III) sulfide

Chromium(III) sulfide is the inorganic compound with the formula Cr2S3.

Chromium sulfides are usually nonstoichiometric compounds, with formulas ranging from CrS to Cr0.67S (corresponding to Cr2S3).

Chromium(III) sulfide can be prepared through the reaction of a stoichiometric mixture of the elements at 1000 °C[2] It is a solid that is insoluble in water.

According to X-ray crystallography, its structure is a combination of that of nickel arsenide (1:1 stoichiometry) and Cd(OH)2 (1:2 stoichiometry).

Some metal-metal bonding is indicated by the short Cr-Cr distance of 2.78 Å.

NFPA 704 four-colored diamond Health 1: Exposure would cause irritation but only minor residual injury. E.g. turpentine Flammability 0: Will not burn. E.g. water Instability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogen Special hazards (white): no code