CAS 2273-43-0


Chinese name: FASCAT9100 catalyst, butyl stannic acid

Alias: FASCAT9100 catalyst, butyl stannic acid, CAS 2273-43-0, butyl stannic acid; butyl hydroxy tin oxide; monobutyl tin hydroxide; n-butyl tin oxide hydroxide; Monobutyltin Oxide monobutyl tin oxide; monobutyl tin oxide; Butyl stannic acid F4100; monobutyl stannic acid; monohydroxy butyl tin oxide; mono hydroxy butyl tin oxide, butyl hydroxy tin oxide, monobutyl tin oxide, mono butyl tin oxide, mono butyl tin hydroxide; butyl hydroxy stannic oxide ; Butyl enoic acid; monobutyl tin oxide, monobutyl tin oxide, monobutyl tin hydroxide oxide

English name: FASCAT9100, Butylhydroxyoxo-stannane;n-Butyltin hydroxide oxide;butyl-hydroxy-oxotin;Butyltin oxide;Monobutyltin Oxide;1-Butanestannonic acid;Butylenestannonic Acid;Butylhydroxytin oxide;Butylstannoic acid;butylstannoic acid catalyst;Butylstannonic acid;Butyltin hydroxide acid catalyst;Butylstannonic acid;Butyltin hydroxide oxide;n-butylstannoic acid;n-butylstannonic acid;Stannane,butylhydroxyoxo

FASCAT9100 catalyst Butylhydroxyoxo-stannane Butylstannic acid n- Butyltin hydroxide oxide CAS 2273-43-0

FASCAT9100 catalyst Butylhydroxyoxo-stannane Butylstannic acid n-
Butyltin hydroxide oxide CAS 2273-43-0

Physical and chemical properties:

CAS 2273-43-0


Molecular formula C4H10O2SN

【EINECS Number】218-880-1

【Molecular formula】C4H10OSn

【MDL Number】MFCD00013927

【Molecular Weight】192.83

【Boiling point】350 °C

【Density】1,46 g/cm3

Monobutyl tin oxide, also known as monobutyl tin oxide, is a white powder, insoluble in water and most solvents, but soluble in strong alkalis and mineral acids.



Mainly used as a catalyst for the production of polyester resins for powder coatings

Catalyst, can be used for the synthesis of saturated polyester powder coatings and coil coatings;

Can be used for the production of unsaturated polyester in gel coatings, sheet molding compounds and casting applications;

The catalyst can be used in the production of polymeric plasticizers.


Storage and transportation:

It should be sealed and stored in a dry, cool and ventilated warehouse.



Packing: 25Kg cardboard drum.

CAS 2273-43-0


Product Name: Butylstannic acid (monobutyltin oxide) 2273-43-0

Alias: Butyltin acid, monobutyltin oxide, CAS 2273-43-0, monobutyltin oxide, Butyltin oxide

Product code: MBTO

Butyltin acid monobutyltin oxide

Butyltin acid monobutyltin oxide

Chinese name

English name Monobutyltin oxide

Other names are monobutyltin oxide, butylstannic acid

Chemical formula C4H1OSnO2

Molecular weight 208.8

EINECS registration number 257-300-1

Boiling point 350℃

Water soluble

Density 1.46g/L

Appearance White powder


Basic Information:

English name: Monobutyltin oxide

CAS number: 2273-43-0

Molecular formula: C4H10O2Sn



White powder with special fragrance, insoluble in water and most organic solvents, soluble in strong alkali and mineral acid

Used for the synthesis of saturated polyester for powder coating, coil (steel) material coating, insulating paint, etc.; for the synthesis of unsaturated polyester; for PBT

Synthesis of engineering resins and synthesis of other esterification and transesterification products


Storage and transportation:

Should be sealed and stored in a dry, cool and ventilated warehouse



200KG/drum Storage: It is recommended to store in a dry and cool area with proper ventilation. After the original packaging, please fasten the packaging cover as soon as possible to prevent the water and other substances from mixing into the product and affecting its performance. Store in a cool, dry place, keep the container sealed and avoid contact with oxides. Do not breathe dust, avoid skin and mucous membrane contact. Smoking, eating and drinking are prohibited in the workplace. After work, shower and change clothes. Store contaminated clothing separately and wash it before reuse. Maintain good hygiene habits.

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