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CAS No.:2273-43-0
Place of Origin:China
Appearance:White powder
MF:C4H10O2Sn
Sn:55%-56%
Certificate:COA MSDS TDS
Free Samples
Monobutyltin oxide—also known as butylstannic acid or monobutyltin(IV) oxide—is an organotin compound. Typically appearing as a white powder, this substance exhibits high thermal and chemical stability; it is insoluble in water and most organic solvents, yet soluble in strong bases and mineral acids. As a highly efficient catalyst for esterification reactions, monobutyltin oxide finds extensive application in the chemical industry, demonstrating exceptional performance particularly in the synthesis of saturated polyester resins used in powder coatings, coil coatings, and insulating varnishes. Furthermore, it serves as a catalyst for unsaturated polyester resins, a raw material for plastic heat stabilizers, and an intermediate in the synthesis of other organotin compounds.

Monobutyltin oxide serves as a highly efficient catalyst for the synthesis of saturated polyester resins used in powder coatings, coil coatings, and insulating varnishes. Compared to traditional organotin catalysts, it offers distinct advantages, including high catalytic activity, low required dosage, and minimal side reactions.
In esterification reactions, it significantly reduces reaction times and boosts production efficiency; concurrently, it helps minimize side reactions—such as the dehydration and oxidation of polyols—thereby ensuring the purity and quality of the final product. Furthermore, it is well-suited for the production of unsaturated polyester resins, particularly for applications involving gel coats and sheet molding compounds (SMC).
Beyond polyester resins, monobutyltin oxide finds application as a catalyst in electrophoretic deposition coatings and serves as a catalyst in the production of polymeric plasticizers. Its highly efficient catalytic properties render it invaluable in chemical synthesis processes that demand precise control over reaction rates and molecular weights.
In the plastics industry, monobutyltin oxide serves as a raw material for the manufacture of plastic heat stabilizers. As a member of the organotin compound family, it also functions as an intermediate in the synthesis of other organotin products, facilitating the preparation of more complex organotin compounds.
Product Specifications:
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Items
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Specifications
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Appearance
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White powder
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Sn
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55-56%
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Water
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≤1.0%
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Package:
1kg/25kg Bucket
Palletized Shipping
Lead Time: 1-7 Days
Shipping Methods: Sea/Air/Express delivery





