Potassium hexachloroplatinate

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Potassium hexachloroplatinate
Potassium hexachloroplatinate.png
六氯合铂(IV)酸钾 CP.jpg
16921-30-5 YesY
Jmol-3D images Image
PubChem 61856
RTECS number TP1650000
Molar mass 485.99 g/mol
Appearance orange to yellow solid
Density 3.344 g/cm3
Melting point 250 °C (482 °F; 523 K) (decomposes)
0.89 g/100ml H2O (at 25 °C) [1]
EU classification Toxic (T)
Flash point 250 °C (482 °F; 523 K)
Related compounds
Other anions
Potassium tetrachloroplatinate
Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

Potassium hexachloroplatinate, an inorganic compound, is an example of a comparatively insoluble potassium salt.

The precipitation of this compound from solutions of hexachloroplatinic acid was formerly used for the determination of potassium by gravimetric analysis.[2]

Potassium hexachloroplatinate may be reduced by hydrazine dihydrochloride to give the corresponding tetrachloroplatinate salt.[3]


  1. ^ Grinberg, A. A.; Sibirskaya, V. V. (1967). "Solubility of hexammine and hexahalo platinum(IV) complexes". Zhurnal Neorganicheskoi Khimii 12: 2069–2071. 
  2. ^ G. F. Smith, J. L. Gring (1933). "The Separation and Determination of the Alkali Metals Using Perchloric Acid. V. Perchloric Acid and Chloroplatinic Acid in the Determination of Small Amounts of Potassium in the Presence of Large Amounts of Sodium". J. Am. Chem. Soc. 55 (10): 3957–3961. doi:10.1021/ja01337a007. 
  3. ^ Keller, R. N.; Moeller, T. (1963). "Potassium Tetrachloroplatinate(II)". Inorg. Synth. Inorganic Syntheses 7: 247–250. doi:10.1002/9780470132333.ch79. ISBN 978-0-470-13233-3.