Stannous oxide

Stannous oxide (CAS 21651-19-4), also identified commercially as SnO, is an inorganic tin compound used primarily as a catalyst and catalyst precursor in polymer manufacturing.

Where is Stannous oxide used?

• Polymer manufacturing: catalyst and catalyst precursor
• Polymerization: initiates and controls reactions
• Specialty plastics and polymer systems: functional input
• Plastics and polymer processing: catalyst precursor for polyurethanes and polyesters
• Synthesis of organotin compounds: downstream catalysts and stabilizers in PVC and other polymer formulations
• Tin-based catalyst systems: starting material for dibutyltin and other organometallic derivatives
• It influences molecular weight and reaction rate during synthesis.

Commercial specifications

• Purity: 97% to 99%+ for industrial use
• Tin content is the primary quality parameter
• Packaging: drums and bulk quantities