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 Bismuth Vanadates pigments are a relatively new pigment class that has gained steadily in importance over the last two decades. Bismuth Vanadates or Orthovanadate, BiVO4, occurs naturally in Germany and Western Australia; however, these deposits are of no practical importance to the pigment industry. Bismuth Vanadates was first reported in a medical patent in 1924 and synthesized as a solid substance in 1964. In 1976, Du Pont described the preparation and properties of “brilliant primrose yellow” monoclinic BiVO4. Bismuth Vanadates is manufactured by dissolving bismuth nitrate, sodium vanadate, and sodium molybdate in nitric acid followed by the precipitation of a complex mixture of the metals. The precipitate is calcined to give a polycrystalline product. |
