Potassium hexachloroplatinate

Potassium hexachloroplatinate
Identifiers
CAS Number	16921-30-5 ;
3D model (JSmol)	Interactive image;
ECHA InfoCard	100.037.239
EC Number	240-979-3;
PubChem CID	61856;
RTECS number	TP1650000;
UNII	99U3Q94QT1 ;
CompTox Dashboard (EPA)	DTXSID90926861 ;
	SMILES Cl[Pt-2](Cl)(Cl)(Cl)(Cl)Cl.[K+].[K+];
Properties
Chemical formula	K2PtCl6
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)
Solubility in water	0.89 g/100ml (at 25 °C)
Solubility product (Ksp)	7.48×10−6
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H301, H317, H318, H334
Precautionary statements	P261, P264, P270, P272, P280, P285, P301+P310, P302+P352, P304+P341, P305+P351+P338, P310, P321, P330, P333+P313, P342+P311, P363, P405, P501
Flash point	250 °C (482 °F; 523 K)
Safety data sheet (SDS)	Oxford MSDS
Related compounds
Other anions	Potassium tetrachloroplatinate
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Potassium hexachloroplatinate is the inorganic compound with the formula K₂PtCl₆. It is a yellow solid that is an example of a comparatively insoluble potassium salt. The salt features the hexachloroplatinate(IV) dianion, which has octahedral coordination geometry.

The precipitation of this compound from solutions of hexachloroplatinic acid was formerly used for the determination of potassium by gravimetric analysis. It is also useful as an intermediate in the recovery of platinum from wastes.

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