Download Product Sheet

Description and features
ViaCat 4201 (Dibutyltin Oxide) is a white powder which has C8H18OSn as chemical formula. The main applications of DBTO are coatings for automotive and industrial applications (aqueous cathodic electrodeposition) and PVC stabilizers. Further it finds its application as intermediate to produce other organotin compounds like dibutyltin dilaurate. Lastly, it us used in select high temperature transesterification reactions for the production of alkyd resins and powder coating resins.

Dibutyltin Oxide is also known as dibutyl(oxo)tin and Dibutyltin(IV) oxide.

Product information

CAS number818-08-6
EC number 212-449-1
HS code2931 90 00
SensitivityNot hygroscopic

Molecular and structural information

Molecular formulaC8H18OSn
Molecular weight248.94 g/mol
Smiles notationCCCC[Sn](=O)CCCC
Structural formula:818-08-6


AppearanceWhite powder
Tin content47.50 +/- 0.50 %
Volatile matter≤0.40 %
Sodium chloride≤0.05 %
Iron≤0.003 %

Physicochemical information

Boiling point161.90 °C
Density1.58 g/cm3 @ 20 ºC
Flash pointNot available
Melting point105 °C
Partition coefficient (log Pow)Not available
Solubility in waterInsoluble (< 0.1 mg/l)
Vapour pressure4x10-6 Pa @ 25°C

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

Shipment Info
Europe and United States: Provided ViaCat 4201 (DBTO) is on stock in our local warehouses our lead time is about one week if delivered in 25 KG drums.
Canada, South America, South Africa and other markets can also be served, please contact our sales department for more details.

Store Dibutyltin Oxide in a cool, dry and well-ventilated area and in line with legal requirements.
Keep DBTO away from heat sources and oxidizing agents.

This substance (CAS: 818-08-6) has been pre-registered under REACH (EC) 1907/2006.

A Material Safety Data Sheets (MSDS) is available for ViaCat 4201 (DBTO) and all other products supplied by Vesta Intracon BV. An MSDS describes the hazards of a product and explains how a product can be safely handled, used and stored. Besides it provides important regulatory and emergency response information for the purchased product.

Dibutyltin Oxide: Disclaimer. This information is supplied solely for informational purposes and Vesta Intracon bv makes no guarantees or warranties, either expressed or implied, with respect to the accuracy and use of this data. All product warranties and guarantees shall be governed by the Standard Terms of Sale. Nothing in this document is legal advice or is a substitute for competent legal advice.