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Properties of substance:

potassium hexachloroplatinate(IV)

Group of substances:

inorganic

Physical appearance:

yellow cubic crystals

Empirical formula (Hill's system for organic substances):

Cl6K2Pt

Structural formula as text:

K2[PtCl6]

Molar/atomic mass: 486.01

Decomposition temperature (°C):

250

CAS №: 16921-30-5

Solubility (g/100 g of solvent):

diethyl ether: insoluble [Ref.]
ethanol 40%: 0.076 (20°C) [Ref.]
ethanol abs.: 0.0009 (20°C) [Ref.]
methylamine: sparingly soluble [Ref.]
water: 0.478 (0°C) [Ref.]
water: 0.6 (10°C) [Ref.]
water: 0.774 (20°C) [Ref.]
water: 1 (30°C) [Ref.]
water: 1.354 (40°C) [Ref.]
water: 2.443 (60°C) [Ref.]
water: 3.71 (80°C) [Ref.]
water: 5.03 (100°C) [Ref.]

Density:

3.499 (24°C, g/cm3)

Reactions:

  1. [Ref.1aster, Ref.2aster, Ref.3aster]
    K2[PtCl4] + 2(CH3)2SO → [Pt((CH3)2SO)2Cl2] + 2KCl

Refractive index (nD):

1.825 (20°C)

Dissociation:

pKsp (0) = 4.96 (20°C, water)

References:

  1. Armarego W. L. F. Purification of Laboratory Chemicals. - 7ed. - 2013. - pp. 601
  2. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 1424-1425
  3. Новый справочник химика и технолога. Химическое равновесие. Свойства растворов. - СПб.: НПО Профессионал, 2004, 2007. - pp. 218 [Russian]
  4. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 173 [Russian]
  5. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 170-171 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru