Butylchlorotin dihydroxide

Butylchlorotin dihydroxide (CAS 13355-96-9), also known as Monobutyltin dihydroxychloride, is an organotin compound used as a catalyst and reactive intermediate in polymer processing and surface coating systems.

Where is Butylchlorotin dihydroxide used?

• Industrial coatings: catalyst for moisture-cure and condensation-cure systems
• Protective and functional coatings: supports film formation
• Silicone and polyurethane sealants and elastomers: drives crosslinking
• PVC stabilizer chemistry: precursor to complex organotin stabilizer compounds
• Adhesive formulators evaluate it where controlled tin-catalyzed curing is required.

Good to know: It functions primarily as a curing agent and crosslinking promoter, enabling controlled network formation in tin-catalyzed formulations. Cure rate and network density are critical to end-product performance in these applications.

Commercial specifications

• Purity specifications commonly confirmed by tin content assay
• Packaging generally offered in kilogram-scale quantities suited to specialty chemical and catalyst applications