Dibutyltin dilaurate
chemical compound
Dibutyltin dilaurate (abbreviated DBTDL) is an organotin compound with the formula (CH3(CH2)10CO2)2Sn(CH2CH2CH2CH3)2. It is a colorless viscous and oily liquid. It is used as a catalyst.
Description
Dibutyltin dilaurate consists of two laurate groups and two butyl groups coordinated to a tin(IV) atom. The coordination geometry at the tin center is tetrahedral. Based on the crystal structure of the related bis(bromobenzoate), the oxygen atoms of the carbonyl groups are weakly bonded to tin atom. The compound is a dibutyltin(IV) ester of lauric acid.
Decomposition
Upon heating to decomposition temperature (which is above 250 °C), dibutyltin dilaurate emits acrid smoke and fumes.
Uses
Dibutyltin dilaurate is used as a paint additive. Together with dibutyltin dioctanoate, dibutyltin dilaurate is used as a catalyst for polyurethane production from isocyanates and diols.
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