bis(tributyltin) oxide, bis(tri-n-butyltin)oxide, AW 75-D, Bio-Met TBTO, Biomet, Biomet 75, BTO, Butinox, C-SN-9
3D model (JSmol)
|Melting point||−45 °C (−49 °F; 228 K)|
|Boiling point||180 °C (356 °F; 453 K) at 2 mm Hg|
|0.002 g/100 mL|
|R-phrases (outdated)||R21 R25 R36/38 R48/23/25 R50/53|
|S-phrases (outdated)||S36/37/39 S45 S60 S61|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|what is ?)(|
Tributyltin oxide (TBTO) is an organotin compound chiefly used as a biocide (fungicide and molluscicide), especially a wood preservative. Its chemical formula is [(C4H9)3Sn]2O. It has the form of a colorless to pale yellow liquid that is only slightly soluble in water (20 ppm) but highly soluble in organic solvents. It is a potent skin irritant.
Tributyltin compounds had been used as marine anti-biofouling agents. Concerns over toxicity of these compounds have led to a worldwide ban by the International Maritime Organization. It is now considered a severe marine pollutant and a Substance of Very High Concern by the EU.
- National Pollutant Inventory Fact Sheet for organotins
- Tributyltin oxide use
- Tributyltin oxide in the Pesticide Properties DataBase (PPDB)