Butylstannonic acid

Butylstannonic acid (CAS 2273-43-0), also referred to as butylstannoic acid, is an organotin compound used industrially as a catalyst and catalyst precursor in polymer curing and cross-linking systems.

Where is Butylstannonic acid used?

• Plastics and polymer processing: catalyst
• Production of polyesters, polyurethanes and silicone systems requiring controlled cure rates
• Construction: sealants and coatings relying on tin-catalyzed cross-linking
• Textile and leather finishing: precursor in mordanting and surface treatment
• Paper manufacturing: specialty coatings needing precise cross-link density
• It reacts with hydroxyl and carboxyl groups in controlled condensation reactions.

Good to know: Purity is typically specified by tin content, the primary parameter for assessing batch consistency.

Commercial specifications

• Purity specified by tin content
• Packaging in multi-kilogram quantities for industrial procurement