Tributyltin oxide

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Tributyltin oxide


Identifiers
CAS number	56-35-9^Y
PubChem	16682746
ChemSpider	10218152^Y
KEGG	C18149^N
ChEMBL	CHEMBL511667^Y
Jmol-3D images	{{#if:CCCC[Sn](CCCC)(CCCC)O[Sn](CCCC)(CCCC)CCCC\|Image 1
SMILES CCCC[Sn](CCCC)(CCCC)O[Sn](CCCC)(CCCC)CCCC
InChI InChI=1S/6C4H9.O.2Sn/c61-3-4-2;;;/h61,3-4H2,2H3;;;^Y Key: APQHKWPGGHMYKJ-UHFFFAOYSA-N^Y InChI=1/6C4H9.O.2Sn/c61-3-4-2;;;/h61,3-4H2,2H3;;;/rC24H54OSn2/c1-7-13-19-26(20-14-8-2,21-15-9-3)25-27(22-16-10-4,23-17-11-5)24-18-12-6/h7-24H2,1-6H3 Key: APQHKWPGGHMYKJ-XAMPVVILAF
Properties
Molecular formula	C₂₄H₅₄OSn₂
Molar mass	596.112
Melting point	-45 °C
Boiling point	180 °C at 2 mm Hg
Solubility in water	0.002 g/100 mL
Hazards
R-phrases	R21 R25 R36/38 R48/23/25 R50/53
S-phrases	S36/37/39 S45 S60 S61
N (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

Tributyltin oxide (TBTO), or bis(tri-n-butyltin)oxide, is an organotin compound chiefly used as a biocide (fungicide and molluscicide), especially a wood preservative. Its chemical formula is C₂₄H₅₄OSn₂. It has the form of a thin, colorless to pale yellow liquid with melting point -45 °C, boiling point 180 °C, and slight water solubility (20 ppm). It is combustible and soluble in organic solvents.

It is available under names AW 75-D, Bio-Met TBTO, Biomet, Biomet 75, BTO, Butinox, C-SN-9, Hexabutyldistannoxane and others.

Tributyltin oxide is a potent skin irritant.

Tributyltin compounds had been used as marine anti-biofouling agents. Concerns over toxicity of these compounds (some reports describe biological effects to marine life at a concentration of 1 nanogram per liter) have led to a worldwide ban by the International Maritime Organization.^[1] It is now considered a severe marine pollutant and a Substance of very high concern by the EU.

References

↑ "Focus on IMO - Anti-fouling systems". International Maritime Organisation.

External links

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