Potassium Stannate

Metal : 38 % Min
Appearance : White to Off White
Impurities
Fe : Nil
Pb : 0.025 % Max
Cl (KCI) : 1.0 % Max
Nitrate : 0.03 % Max
Used in
Immersion Alloy Tin Plating 
(Tin Aluminium, Tin Zinc, Tin Copper)
White Bronze Plating (Imitation Rhodium)