Butyl Stannoic Acid
TECHNICAL DATA SHEET
Chemical Name Butyl Stannoic Acid
CAS No. 2273-43-0
Tin Content 56 %
Molecular Weight 208.8
Specific Gravity (25 0C) 1.46
Melting Point Decomposes without melting.
Solubility Insoluble in water and most organics;
Dissolves in strong alkaline and
Mineral acid solutions.
A solid, hydrolytically stable catalyst that is active at low loadings. It is used primarily to catalyze etherification and polycondensation reactions at temperatures between 2100 and 2400C. It begins tosolubilize in carboxylic acid at 800C during the reaction and becomes incorporated into the final product without affecting the quality of the product.
It can be used at temperatures up to 2500 C it is neutral and non-corrosive. It can significantly shorten esterification times when compared to uncatalyzed systems, and provide energy savings with lower reaction temperatures.
It minimizes side reactions such as dehydration and oxidative degradation of polyhydric alcohols,
Especially secondary alcohols.
It can be charged up front with other reactants and requires no special handling other than avoiding excessive exposure to moisture. It does not require neutralization or filtration at the end of production. It is used in the synthesis of saturated polyester resins for powder coatings and coil coatings. It is used in the production of unsaturated polyester resins for gel-coat, sheet molding, and cast molding applications. It is also used to produce polymeric plasticizers.