Sodium stannate trihydrate

Sodium stannate trihydrate (CAS 12027-70-2), also sold as sodium stannate, is an inorganic tin salt used industrially as a corrosion inhibitor, flame retardant additive, and surface treatment agent.

Where is Sodium stannate trihydrate used?

• Electroplating and electronics: tin source in alkaline plating baths for uniform, solderable coatings on metal components and circuits
• Textiles: mordant and flame-retardant treatment for natural fibers, particularly wool
• Water treatment: corrosion inhibitor for metal pipework and industrial cooling systems
• Paper and packaging: surface sizing agent
• Specialty coatings: controlled tin deposition improves barrier properties
• It functions by depositing tin-based compounds onto substrates or into formulations to modify surface chemistry.

Commercial specifications

• Purity levels typically specified at 95% or higher
• Packaging ranges from small drums to bulk quantities
• Store in a cool, dry environment to maintain stability