Bismuth(III) sulfate

It is a hygroscopic white solid that decomposes at 465 °C to bismuth(III) oxysulfate and is isotypic to antimony(III) sulfate.

[1] Bismuth(III) sulfate is most commonly produced from the reaction of bismuth(III) nitrate and sulfuric acid: Another polymorph of bismuth(III) sulfate can be produced by the treatment of lithium bismuthate(III) with sulfuric acid.

[3] Bismuth(III) sulfate decomposes at 465 °C to Bi2O(SO4)2.

If continually heated, it decomposes to various bismuth oxysulfates and at 950 °C it decomposes to bismuth(III) oxide.

Bismuth(III) sulfate hydrolyzes in water.

NFPA 704 four-colored diamond Health 0: Exposure under fire conditions would offer no hazard beyond that of ordinary combustible material. E.g. sodium chloride 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