Potassium hexafluorophosphate White cubic crystals Molecular formula: kpf6 Molecular weight: 184.07 Cas no: 17084-13-8 Purity:ª99.5% Impurities: Sulfate: _0.005% Sulfate: _0.005% Free fluorine (f4):_0.08% (k4):_0.1% Fe:_0.01% Heavy metal: _0.001% Water: _0.3% Packaging: iron or paper drum. Net weight 50kg.