Stannous oxalate

Stannous oxalate (CAS 814-94-8) is a tin-based salt of oxalic acid, commercially available under trade names including Fascat 2001, FC 2001, SV CAT-100, and Tin Oxalate. It carries no assigned E-code and is identified under EC number 212-414-0 with the molecular formula C2H2O4.Sn.

In polymer manufacturing, stannous oxalate functions as a catalyst for polyesterification and polycondensation reactions, accelerating chain growth at controlled temperatures. In personal care formulations, it acts as a chelator and pH buffer, binding metal ions that would otherwise destabilise active ingredients. Water treatment applications exploit its antimicrobial and sequestration properties to inhibit microbial growth and control scaling.

Stannous oxalate is supplied as a powder and classified under HS code 29171100. Procurement should confirm compliance with REACH registration requirements for EU supply chains, and verify grade suitability against relevant pharmacopoeial or industrial specifications. Packaging formats vary by supplier and order volume.