Butyltin Tris(2-Ethylhexanoate) CAS 23850-94-4


Description and features

Viacat 220 (Monobutyltin-tris-(ethylhexoate)) is used as catalyst for manufacturing of plasticizers, saturated and unsaturated polyesters, coating resins and in urethane reaction to reduce cure temperature to 140 – 160°C.

Product Identification

CAS number 23850-94-4
EC number 245-912-1
HS code 2931 90 00


Appearance Liquid
Tin content 18.40 – 20.20
Saponification nr mg KOH/g 255 – 2850
Pour point °C -18 °C


Available packaging: 25 KG drum
Special packaging is available on request


Store Monobutyltin tris ethylhexoate in a cool, dry and well-ventilated area and in line with legal requirements.
Keep ViaCat 220 (MBTEH) away from heat sources and oxidizing agents.

Molecular and structural information

Molecular formula C28H54O6Sn
Molecular weight 611.44 g/mol
Structural formula 23850-94-4

Physicochemical information

Boiling point 228 °C @ 760 mmHg
Density 1.150 g/ml @ 25 °C
Flash point >113 °C
Melting point -33.0 °C
Partition coefficient (log Pow) 8.00
Refractive index 1.462 – 1.470 @ 20 °C
Solubility in water Insoluble
Viscosity mPa.s 140 – 180

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