Gold(III) phosphate explained

Gold(III) phosphate is a chemical compound with the formula AuPO₄. It is a pale yellow solid that is insoluble in water and acetone. It decomposes at 450 °C into gold metal, phosphorus pentoxide, and oxygen.^[1]

Production

Gold(III) phosphate is produced by the reaction of gold(III) hydroxide and phosphoric acid at 130 °C:

AuO(OH) + H₃PO₄ → AuPO₄ + 2H₂OIt can also be produced by the replacement of phosphoric acid with a mixture of nitric acid and phosphorus pentoxide.

Notes and References

1. Pd₂P₂O₇ AND AuPO₄ - NEW ANHYDROUS PHOSPHATES OF NOBLE METALS . Phosphorus Research Bulletin . 2005 . 19 . 77–82 . 10.3363/prb1992.19.0_77 . Japanese Association of Inorganic Phosphorus Chemistry . en. free .