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Monobutyltin dihydroxychloride also known as Butyltin chloride dihydroxide, butyl(chloro)stannanediol, is one of several organotin compounds which are active as an esterification catalysts at a temperature range of 200-230 °C.
Monobutyltin dihydroxychloride is a non-acidic white solid which has C4H11ClO2Sn as chemical formula.
Monobutyltin dihydroxychloride dissolves by reaction on heating with alcohols or carboxylic acids.
CAS: 13355-96-9
MF: C4H11ClO2Sn
MW: 245.29
EINECS: 236-406-1
Synonyms
Stannane,butylchlorodihydroxy-;Butylchlorostannanediol;Butyldihydroxychlorostannane;Dihydroxychlorobutylstannane;Butylchlorodihdroxytin;Butyltin chloride dihydroxide,Butylchlorodihydroxystannane;butyl(chloro)tin dihydrate;FASCAT 4101 (Monobutyltin dihydroxychloride)
The resulting active is soluble in ester systems and remains in the ester product.
Monobutyltin dihydroxychloride is an organotin compound.
The amorphous white powder is soluble in alcohols and carboxylic acids when heated.
Monobutyltin dihydroxychloride is used as a catalyst for esterification, transesterification and polycondensation reactions.
The use of Monobutyltin dihydroxychloride produces consistently good results in the production of trioctyl trimellitate, unsaturated and saturated polyesters and in the production of alkyds.
Depending on the specific application, application concentrations are normally between 0.01% and 0.5%.
The catalyst can be used in the 90 – 280 °C temperature range.
Monobutyltin dihydroxychloride is one of several organotin compounds that serve as esterification catalysts in the temperature range of 200–230°C.
Monobutyltin dihydroxychloride is a non-acidic white solid with the chemical formula C₄H₁₁ClO₂Sn.
When heated with alcohols or carboxylic acids, Monobutyltin dihydroxychloride dissolves and forms an active species that is soluble in ester systems and remains in the final ester product.
Monobutyltin dihydroxychloride, is an organotin compound characterized by its butyl groups attached to a tin atom, along with two hydroxyl groups and a chloride ion.
Monobutyltin dihydroxychloride typically appears as a colorless to pale yellow liquid or solid, depending on its form and purity.
Monobutyltin dihydroxychloride is known for its applications in various fields, including as a biocide and a stabilizer in plastics.
The presence of hydroxyl groups contributes to its reactivity, allowing Monobutyltin dihydroxychloride to form complexes with various ligands.
Monobutyltin dihydroxychloride, including this one, can exhibit toxicity to aquatic organisms, raising environmental concerns regarding their use and disposal.
Proper handling and safety measures are essential due to potential health risks associated with organotin compounds, which can disrupt endocrine functions in living organisms.
Overall, Monobutyltin dihydroxychloride is a significant compound in industrial chemistry, but its environmental impact necessitates careful management.
Monobutyltin dihydroxychloride Chemical Properties
Melting point: 150 °C (dec.)(lit.)
Boiling point: 243.2±23.0 °C(Predicted)
Density: 1,26 g/cm3
Vapor pressure: 0.061Pa at 20℃
Storage temp.: Store below +30°C.
Solubility: 1.03mg/L in organic solvents at 20 ℃
Form: solid
pka: 2.98±0.70(Predicted)
Specific Gravity: 1.26
Water Solubility: 1.03mg/L at 20℃
Hydrolytic Sensitivity 4: no reaction with water under neutral conditions
InChIKey: FQYHHEJETOLDHR-UHFFFAOYSA-K
LogP: 0.35 at 20℃
CAS DataBase Reference: 13355-96-9(CAS DataBase Reference)
EPA Substance Registry System: Monobutyltin dihydroxychloride (13355-96-9)
Uses
Monobutyltin dihydroxychloride is an amorphous, hydrolytically stable butyl tin chloride dihydroxide.
Monobutyltin dihydroxychloride can be used for esterification, polycondensation and transesterification reactions.
The catalyst is used to synthesize saturated polyester resin for powder coatings.
Other uses include: production of unsaturated polyester resins for gel coat, sheet molding, and cast molding applications in transesterification reactions run at temperatures between 140-180°C to produce esters and anti-oxidants in the production of PBT engineering resins for the automotive and construction markets.
