Chinese name: FASCAT4201 catalyst

English name: 4201, Dibutyltin oxide, DIBUTYLOXOSTANNANE, DIBUTYLOXOTIN, DIBUTYLTIN(IV) OXIDE, DIBUTYLTIN OXIDE, DI-N-BUTYLTIN OXIDE, Dbot, Dbto, Dibutyloxideoftin, dibutyloxo-stannan, dibutyloxo-ti, Dibutylstannaneoxide, Dibutylstanniumoxide, Dibutyltinmonoxide, dibutyl- tioxide, di-n-butylslannicoxide, di-n-butyl-zinn-oxyd, di-n-dibutyltin, di-n-dibutyltinoxide, kyslicnikdi-n-butylcinicity, Stannane, dibutyloxo

Physical and chemical properties:

CAS 818-08-6

EC 212-449-1

Molecular formula C8H18OSN

Alias: Dibutyloxotin

CAS:818-08-6_Molecular structure of dibutyltin oxide

Molecular formula: C8H18OSn

Molecular weight: 248.94

CAS registration number: 818-08-6

EINECS Accession Number: 212-449-1

InChI: 1S/2C4H9.O.Sn/c2*1-3-4-2;;/h2*1,3-4H2,2H3;;

physical and chemical properties

Melting point: 300ºC

Water solubility: 4.0MG/L(20ºC)

Description: White to slightly yellow powder. Melting point>300°C, water solubility 4.0mg/L (20°C). Soluble in hydrochloric acid, insoluble in water and organic solvents.

【EINECS number】212-449-1

【Molecular formula】C8H18OSn

【MDL No.】MFCD00001992

【Molecular weight】248.94

【MOL file】818-08-6.mol

【Appearance Properties】White to slightly yellow powder.

【Solubility】Insoluble in water, most organic solvents, soluble in hydrochloric acid.

【Melting point】≥300 °C(lit.)

【Boiling point】>300°C

【Density】1,5 g/cm3

【Flash point】81-83°C

【Water solubility】4.0 mg/L (20 ºC)


• Amorphous white solid

• Transesterification catalyst for methacrylate esters

• High temperature transesterification reactions for coating resins

• Cross-linking electrocoat resins and pastes

• Finely ground available – FASCAT 4203


Used as a catalyst for esterification and polymerization.

Storage and transportation:

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


Packing: 25Kg cardboard drum.

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