Stannous sulphate is the primary tin metal source used in acid tin electroplating baths. It provides Sn²⁺ ions required to deposit bright, smooth and solderable tin coatings on copper, brass and electronic components.
Chemical Details
Chemical name: Stannous Sulphate
Formula: SnSO₄
Appearance: White to off-white crystalline powder
Tin metal content: ~52–54% Sn
Solubility: Soluble in acidic solutions
Oxidation sensitivity: Easily oxidizes to Sn⁴⁺ (must be stabilised)