Copper sulphate is the primary copper metal source used in acid copper electroplating baths. It provides Cu²⁺ ions required to produce smooth, levelled, highly conductive and bright copper deposits on steel, zinc die-cast, brass and PCB components.
Chemical Details
 
Chemical name: Copper Sulphate Pentahydrate
Formula: CuSO₄·5H₂O
Appearance: Blue crystalline solid
Copper metal content: ~24–25% Cu
Solubility: Highly soluble in water
Purity: Electroplating grade, low iron & chloride

Function in Electroplating Bath
Copper sulphate acts as the main copper source in acid copper plating systems.

Key Roles
Supplies Cu²⁺ ions for copper deposition.
Controls plating speed and current efficiency.
Enables high conductivity and uniform metal distribution.
Supports bright, levelled and ductile copper coatings.