Bis(tributyltin) oxide Chemical Properties

Melting point:

-45°C

Boiling point:

180 °C2 mm Hg(lit.)

Density 

1.17 g/mL at 25 °C(lit.)

vapor pressure 

<0.01 mm Hg ( 25 °C)

refractive index 

n20/D 1.486(lit.)

Flash point:

>230 °F

storage temp. 

+4°C

solubility 

Chloroform (Soluble), Methanol (Slightly)

form 

liquid

Specific Gravity

1.170

color 

colorless

Water Solubility 

INSOLUBLE

Hydrolytic Sensitivity

5: forms reversible hydrate

Sensitive 

Air & Moisture Sensitive

BRN 

745057

Exposure limits

ACGIH: TWA 0.1 mg/m3; STEL 0.2 mg/m3 (Skin)
NIOSH: IDLH 25 mg/m3; TWA 0.1 mg/m3

Stability:

Moisture Sensitive

InChIKey

APQHKWPGGHMYKJ-UHFFFAOYSA-N

LogP

3.840 (est)

CAS DataBase Reference

56-35-9(CAS DataBase Reference)

NIST Chemistry Reference

Distannoxane, hexabutyl-(56-35-9)

EPA Substance Registry System

Bis(tributyltin) oxide (56-35-9)

Safety Information

Hazard Codes 

T,N

Risk Statements 

21-25-36/38-48/23/25-50/53

Safety Statements 

35-36/37/39-45-60-61

RIDADR 

UN 2788 6.1/PG 2

WGK Germany 

3

RTECS 

JN8750000

TSCA 

Yes

HazardClass 

6.1

PackingGroup 

II

HS Code 

29310095

Hazardous Substances Data

56-35-9(Hazardous Substances Data)

Toxicity

LD50 oral in rat: 87mg/kg

MSDS

• Language:English Provider:Hexabutyldistannoxane
• Language:English Provider:ACROS
• Language:English Provider:SigmaAldrich
• Language:English Provider:ALFA

Bis(tributyltin) oxide Usage And Synthesis

Description

TBTO (bis(tri-n-butyltin)oxide) appears as thin, colourless to pale yellow, flammable and combustible liquid. It is soluble in organic solvents. TBTO, or bis(tri-n-butyltin)oxide, is an organotin compound used as a biocide, fungicide, and molluscicide. Uses of tributyltin also include as an anti-fouling chemical in marine paints for boats, anti-fungal agent in textiles and industrial water systems, in cooling tower and refrigeration water systems, wood pulp preservative in paints and paper mill systems, inner surfaces of cardboard, and in the manufacturing processes of leather goods, textiles, wood, plastics, and mothproof stored garments. In fact, TBT compounds are considered the most hazardous of all tin compounds.

Chemical Properties

Clear colorless liquid

Uses

Bis(tributyltin) oxide is widely used in Europe for the preservation of timber, millwork, and wood joinery, eg, window sashes and door frames. It is applied from organic solution by dipping or vacuum impregnation. It imparts resistance to attack by fungi and insects but is not suitable for underground use. An advantage of bis(tributyltin) oxide is that it does not interfere with subsequent painting or decorative staining and does not change the natural color of the wood.

Uses

Tributyltin oxide is used as an antifouling and biocide agent against fungi, algae and bacteria in paints and is an irritant.

Uses

Bis(tributyltin) Oxide is an organotin compound used as a fungicide and molluscicide, particularly in wood preservation. Bis(tributyltin) Oxide was used as an active component in marine antifouling paints but is not longer used due to its toxicity and is considered a severe marine pollutant.

Definition

ChEBI: Tributyltin oxide is an inorganic molecular entity.

General Description

Clear pale yellow liquid. Toxic by skin absorption or inhalation of vapors. Used as a bactericide, fungicide and chemical intermediate.

Air & Water Reactions

Insoluble in water.

Reactivity Profile

Bis(tributyltin) oxide may react vigorously with oxidizing agents and with reducing agents.

Hazard

Toxic via ingestion and inhalation.

Health Hazard

ACUTE/CHRONIC HAZARDS: Bis(tributyltin) oxide is toxic by ingestion and inhalation and is a skin and eye irritant.

Fire Hazard

Bis(tributyltin) oxide is probably combustible.

Contact allergens

Tributyl tin oxide is used as an antifouling and biocide agent against fungi, algae, and bacteria, particularly in paints. Sometimes used in chemistry, tributyltin oxide is a strong irritant.

Bis(tributyltin) oxide(56-35-9)Related Product Information

• Monobutyltin oxide
• HEXABUTYLDITIN
• Tributylphosphine
• NITRIC OXIDE
• Lithium oxide
• Stannic oxide
• Aluminum oxide
• Iron oxide
• Zinc oxide
• ETHYLENE OXIDE
• Tributyltin chloride
• Tributyltin Hydride
• Sodium oxide
• (Diethoxymethyl)diphenylphosphine oxide
• Gadolinium oxide
• Tetraterbium heptaoxide
• Holmium Oxide
• Gallium(III) oxide