Dibutyltin oxide

Dibutyltin oxide (CAS 818-08-6) is an organotin compound used as a catalyst and reactive intermediate in polymer processing and surface coating industries.

Where is Dibutyltin oxide used?

• Polymer processing: drives esterification, transesterification and condensation reactions with precise cure-rate control
• Polyurethane and silicone sealants: curing catalyst controlling gel time and elastomeric network properties
• Coatings: catalyzes alkyd and polyester resin synthesis without discoloring the final film
• PVC stabilizers: precursor to dibutyltin carboxylates and mercaptides
• In moisture-cure adhesives it regulates cross-linking speed for structural bonding.

Commercial specifications

• Purity typically 95% to 98%+ (technical grade)
• Packaging: multi-kilogram bags to bulk quantities