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TRIBUTYLTIN OXIDE ICSC: 1282
Date of Peer Review: March 1998

Hexabutyldistannoxane
Tri-n-butyltin oxide
TBTO
CAS # 56-35-9 C24H54OSn2
RTECS # JN8750000 Molecular mass: 596.07
UN # 3020
EC # 050-008-00-3
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Combustible.
NO open flames.
In case of fire in the surroundings: use appropriate extinguishing media.
EXPLOSION


EXPOSURE
PREVENT GENERATION OF MISTS! STRICT HYGIENE!

Inhalation Abdominal cramps. Cough. Diarrhoea. Laboured breathing. Nausea. Sore throat. Vomiting. Symptoms may be delayed (see Notes).
Ventilation, local exhaust, or breathing protection.
Fresh air, rest. Half-upright position. Refer for medical attention.
Skin MAY BE ABSORBED! Redness. After delay skin burns.
Protective gloves. Protective clothing.
Rinse and then wash skin with water and soap. Refer for medical attention.
Eyes Redness. Pain.
Safety spectacles face shield or eye protection in combination with breathing protection.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion Abdominal cramps. Diarrhoea. Nausea. Vomiting.
Do not eat, drink, or smoke during work. Wash hands before eating.
Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Give plenty of water to drink. Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Do NOT wash away into sewer. Carefully collect remainder, then remove to safe place. Do NOT let this chemical enter the environment. Chemical protection suit including self-contained breathing apparatus.
Severe marine pollutant.
EU Classification
Symbol: T, N
R: 21-25-36/38-48/23/25-50/53
S: (1/2-)-35-36/37/39-45-60-61
Note: [A]
UN Classification
UN Hazard Class: 6.1
UN Pack Group: II
EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-61GT6-II
Provision to contain effluent from fire extinguishing.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 2004

SEE IMPORTANT INFORMATION ON BACK


TRIBUTYLTIN OXIDE ICSC: 1282
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
LIQUID

CHEMICAL DANGERS:
The substance decomposes on burning producing toxic fumes.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: (as Sn) 0.1 mg/m as TWA; 0.2 mg/m as STEL; (skin); A4 (not classifiable as a human carcinogen); (ACGIH 2004).
MAK: 0.0021 ppm, 0.05 mg/m; Peak limitation category: I(1); Pregnancy risk group: C; (DFG 2004).
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its aerosol, through the skin and by ingestion.

INHALATION RISK:
Evaporation at 20C is negligible; a harmful concentration of airborne particles can, however, be reached quickly.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is severely irritating to the eyes, the skin. Inhalation of the aerosol may cause lung oedema (see Notes). The substance may cause effects on the thymus, resulting in depression of the immune function.

PHYSICAL PROPERTIES
Boiling point: 173C
Melting point: <-45C
Relative density (water = 1): 1.17 at 20C
Solubility in water: poor
Vapour pressure, Pa at 20C: 0.001
Flash point: 190C c.c.
Octanol/water partition coefficient as log Pow: 3.19
ENVIRONMENTAL DATA
The substance is very toxic to aquatic organisms. Bioaccumulation of this chemical may occur along the food chain, for example in fish and in molluscs. This substance does enter the environment under normal use. Great care, however, should be given to avoid any additional release, e.g. through inappropriate disposal.
NOTES
The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation is therefore essential. Immediate administration of an appropriate inhalation therapy by a doctor or a person authorized by him/her, should be considered.
Card has been partly updated in October 2004 and April 2005. See sections Occupational Exposure Limits, EU classification, Emergency Response.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 2004
See Also:
        Tributyltin compounds (EHC 116, 1990)
        Tributyltin compounds (Group PIM G018)