Dibutyltin Dilaurate (DBTDL)CAS 77-58-7
The most common organotin catalyst in polyurethane chemistry and PVC heat stabilization.
Toxic Chemical Databases
Substance-specific listings — these flags are for Dibutyltin Dilaurate alone, not for the broader family.
Chemical Type
Dialkyltin Catalyst & Stabilizer
Chemical Description
DBTDL is the standard catalyst for many polyurethane reactions including some silicone-cure systems and PVC heat stabilization. The dibutyltin core shows reproductive and developmental toxicity in animal studies and immune-system effects in occupationally-exposed worker cohorts. EU REACH Authorisation list candidate based on endocrine-disruption and reproductive concerns.
Biological Activity
Severity scores specific to this substance, NOT the parent family average. Differences between siblings are real and meaningful.
Top Health Consequences
- Reproductive and developmental toxicity in animal models
- Immune system effects in worker cohorts
- Skin sensitization on direct contact
- Migration from PVC into surrounding house dust
Pathways of Exposure
- Skin contact during PU sealant and silicone cure
- Off-gassing from freshly-installed polyurethane systems
- House dust from PVC products using DBTDL as stabilizer
Building Materials with Dibutyltin Dilaurate
Listed alphabetically — product categories where this specific substance appears.
Moisture-Cure Silicone Sealants
Polyurethane Catalyst-Containing Adhesives
PVC Pipe & Sheet Stabilizers