Sodium stannate is the primary tin metal source used in alkaline (alkaline non-cyanide) tin electroplating baths. It provides soluble stannate ions that enable uniform tin deposition with excellent throwing power and good corrosion resistance.
Chemical Details
Chemical name: Sodium Stannate Trihydrate
Formula: Na₂SnO₃·3H₂O
Appearance: White crystalline powder or granules
Tin metal content: ~42–45% Sn
Solubility: Highly soluble in alkaline solutions
Bath type: Alkaline tin plating, White Bronze, Yellow Bronze Plating