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DI-n-BUTYLTIN OXIDEICSC: 0256
April 2017
CAS #: 818-08-6Dibutyloxostannane
Dibutyloxotin
Dibutyltin oxide
UN #: 3146
EINECS #: 212-449-1

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Combustible. Gives off irritating or toxic fumes (or gases) in a fire.  Finely dispersed particles form explosive mixtures in air.  NO open flames.  Closed system, dust explosion-proof electrical equipment and lighting. Prevent deposition of dust. Prevent build-up of electrostatic charges (e.g., by grounding).  Use water spray, powder, carbon dioxide.   

 AVOID ALL CONTACT! IN ALL CASES CONSULT A DOCTOR! 
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation Headache. Confusion.  Use local exhaust or breathing protection.  Fresh air, rest. Refer for medical attention. 
Skin Redness. Pain. Further see Inhalation.  Protective gloves.  Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention . 
Eyes Redness. Pain.  Wear 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 refer for medical attention. 
Ingestion See Inhalation.  Do not eat, drink, or smoke during work. Wash hands before eating.  Rinse mouth. Give a slurry of activated charcoal in water to drink. Refer for medical attention . 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations. 

According to UN GHS Criteria

skull;toxiccancer;health hazenviro;aqua
DANGER
Fatal if swallowed
Causes skin and eye irritation
May cause damage to the nervous system
Very toxic to aquatic life with long lasting effects 

Transportation
UN Classification
UN Hazard Class: 6.1 

STORAGE
Cool. Separated from food and feedstuffs, oxidants and bases. Provision to contain effluent from fire extinguishing. 
PACKAGING
Unbreakable packaging.
Put breakable packaging into closed unbreakable container.
Do not transport with food and feedstuffs. 
DI-n-BUTYLTIN OXIDE ICSC: 0256
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
WHITE POWDER. 

Physical dangers
Dust explosion possible if in powder or granular form, mixed with air. If dry, it can be charged electrostatically by swirling, pneumatic transport, pouring, etc. 

Chemical dangers
Decomposes on heating. This produces toxic fumes of tin and tin oxides. Reacts under certain circumstances with oxidants and bases. 

Formula: C8H18OSn/(C4H9)2SnO/(C8H18SnO)x
Molecular mass: 248.9 Molecular mass: see Notes
Boiling point: 161.9°C
Melting point: 105°C
Relative density (water = 1): 1.5
Solubility in water, mg/l at 20°C: 3.9-4.2 (very poor)
Vapour pressure, Pa at 25°C: 0.000004
Auto-ignition temperature: 279°C
Octanol/water partition coefficient as log Pow: 5.33 (calculated) 


EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation and by ingestion. 

Effects of short-term exposure
The substance is irritating to the eyes, skin and respiratory tract. The substance may cause effects on the nervous system. This may result in impaired functions. Exposure could cause death. 

Inhalation risk
A harmful concentration of airborne particles can be reached quickly when dispersed. 

Effects of long-term or repeated exposure
 


Occupational exposure limits
 

ENVIRONMENT
The substance is very toxic to aquatic organisms. The substance may cause long-term effects in the aquatic environment. This substance does enter the environment under normal use. Great care, however, should be taken to avoid any additional release, for example through inappropriate disposal. 

NOTES
Molecular mass can vary because Dibutyltin oxide can occur in a partial polymerized form, on which its stability depends.
Insufficient data are available on the effect of this substance on human health, therefore utmost care must be taken. 

ADDITIONAL INFORMATION
  EC 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, 1 

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    See Also:
       Toxicological Abbreviations