Butyltin tris(2-ethylhexanoate)


Chinese name: FASCAT4102 catalyst

Alias: FASCAT4102 catalyst, monobutyl tin triisooctanoate, CAS 23850-94-4, monobutyl tin triisooctanoate, tris (2-ethyl-1-hexanoic acid) butyl tin, butyl tin tris (isooctanoic acid), three Monobutyl tin isooctanoate

English name: FASCAT 4102, n-Butyltris(2-ethylhexanoate)tin, -Butyltris(2-ethylhexanoate)tin, Butyltin tris(2-ethylhexanoate), Butyltrisethylhexanoatetin, MONOBUTYLTIN TRIS(2-ETHYL HEXANOATE), BUTYLTIN TRIS-2-ETHYLEXANOA , Butyltin tris-2-ethylhexoate, [butyl-bis(2-ethylhexanoyloxy)stannyl] 2-ethylhexanoate, Butyltin Tris(2-ethylexanoate), Butyltin tris(2-ethylhexoate), Butyltris((2-ethyl-1-oxohexyl) oxy)stannane, EINECS 245-912-1,

Fascat 4102, Fascat 9201, Stannane,butyltris((2-ethyl-1-oxohexyl)oxy), Butyltintris(2-ethylhexanoate) (6CI), Stannane, utyltris[(2-ethyl-1-oxohexyl)oxy]-(9CI ), Stannane, butyltris[(2-ethylhexanoyl)oxy]- (8CI), Tegokat 220, Fascat9201, Monobutyltin tris(2-ethylhexanoate)

FASCAT 4102 CAS 23850-94-4 n-Butyltris(2-ethylhexanoate)tin Butyltin tris(2-ethylhexanoate) Butyltin tris-2-ethylhexoate

FASCAT 4102 CAS 23850-94-4 n-Butyltris(2-ethylhexanoate)tin Butyltin
tris(2-ethylhexanoate) Butyltin tris-2-ethylhexoate


Physical and chemical properties:

CAS 23850-94-4

EC 245-912-1

Molecular formula C28H54O6SN

Tin monobutyl triisooctanoate is a light yellow transparent liquid, soluble in most organic solvents, but insoluble in water. It is a kind of esterification catalyst with low addition amount and high catalytic activity, which is resistant to hydrolysis. It is mainly used for esterification and polycondensation reactions at a reaction temperature of 210~240″C. The maximum reaction temperature can reach 250C. The catalyst is neutral, The equipment has no corrosive effect. After the reaction is completed, it does not need to be separated and does not affect the quality of the final product.

【Melting point】 -33°C

【Density】1.105 g/mL at 25 °C(lit.)

【Refractive Index】n20/D 1.465(lit.)

【Flash point】>230 °F



The yellow liquid is used to synthesize saturated polyester resins and used in powder coatings and coil coatings.

Other uses include:

  • Aromatic polyester polyol for flexible and rigid PU foam applications


  • For ring-opening polymerization in polymer production • For the preparation of plasticizers, including dioctyl phthalate
  • Used for transesterification reaction, at 80℃ to 150℃


Storage and transportation:

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



200KG/barrel 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 product performance from being mixed with other substances such as water resistance. Store in a cool, dry place, keep the container tightly closed, and avoid contact with oxides. Do not inhale dust and avoid contact with skin and mucous membranes. Smoking, eating and drinking are prohibited in the workplace. After work, take a shower and change clothes. Store contaminated clothes separately and use them after washing. Maintain good hygiene habits.

BDMAEE:Bis (2-Dimethylaminoethyl) Ether

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