Bismuth(III) sulfate is an inorganic chemical compound of bismuth with the formula Bi2(SO4)3. It is a hygroscopic white solid that decomposes at 465 °C to bismuth(III) oxysulfate and is isotypic to antimony(III) sulfate.[1]

Production

Bismuth(III) sulfate is most commonly produced from the reaction of bismuth(III) nitrate and sulfuric acid:

2 Bi(NO3)3 + 3 H2SO4 → Bi2(SO4)3 + 6 HNO3

Another polymorph of bismuth(III) sulfate can be produced by the treatment of lithium bismuthate(III) with sulfuric acid.[3]

Properties

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.[1][2]

References

  1. ^ a b c d Matthias Hämmer; Jakoah Brgoch; Philip Netzsch; Henning A. Höppe (2022). "The Role of the Bi3+ Lone Pair Effect in Bi(H3O)(SO4)2, Bi(HSO4)3, and Bi2(SO4)3". Inorganic Chemistry. 61 (9): 4102–4113. doi:10.1021/acs.inorgchem.1c03893. PMID 35192329. S2CID 247057309.
  2. ^ a b Ryoko Matsuzaki; Atsuko Sofue; Hagio Masumizu; Yuzo Saeki (1974). "THERMAL DECOMPOSITION PROCESS OF Bi2(SO4)3". Chemistry Letters. 3 (7): 737–740. doi:10.1246/cl.1974.737.
  3. ^ Chinmayee V. Subban; Gwenaëlle Rousse; Matthieu Courty; Philippe Barboux; Jean-Marie Tarascon (2014). "Polymorphism in Bi2(SO4)3". Solid State Sciences. 38: 25–29. Bibcode:2014SSSci..38...25S. doi:10.1016/j.solidstatesciences.2014.09.008.