Copper methanesulfonate

Copper methanesulfonate (CAS 54253-62-2) is a copper salt of methanesulfonic acid; an electrolyte source in copper electroplating and electrodeposition.

Where is Copper methanesulfonate used?

• Electronics: copper ion source in plating baths for printed circuit boards, semiconductor interconnects and wafer-level packaging
• Decorative and functional plating of automotive and industrial components
• Mining and hydrometallurgy: electrowinning and electrorefining circuits
• Specialty chemicals: Lewis acid catalyst in organic synthesis
• It serves as the copper ion source in plating baths.

Good to know: High solubility and low corrosivity compared to sulfate-based alternatives. Electronic-grade material is held to tighter limits on metallic impurities for semiconductor fabrication.

Commercial specifications

• Aqueous solution; concentration expressed as copper content or percent active salt
• Packaging from drums to intermediate bulk containers