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DIBUTYL PHOSPHATEICSC: 1278
Dibutyl acid o-phosphate
Dibutyl hydrogen phosphate
Phosphoric acid dibutyl ester
March 1998
CAS #: 107-66-4
EC Number: 203-509-8

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Combustible. Gives off irritating or toxic fumes (or gases) in a fire.    NO open flames.    Use powder, AFFF, foam, carbon dioxide.   

 PREVENT GENERATION OF MISTS!  
  SYMPTOMS PREVENTION FIRST AID
Inhalation Cough. Headache. Sore throat.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. 
Skin Redness. Pain.  Protective gloves.  Remove contaminated clothes. Rinse and then wash skin with water and soap. 
Eyes Redness. Pain.  Wear safety goggles or face shield.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Abdominal pain. Burning sensation. Sore throat.  Do not eat, drink, or smoke during work.  Rinse mouth. Do NOT induce vomiting. Give one or two glasses of water to drink. Refer for medical attention . 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. Collect leaking and spilled liquid in sealable containers as far as possible. Cautiously neutralize spilled liquid. Then wash away with plenty of water. 

According to UN GHS Criteria

 

Transportation
UN Classification
 

STORAGE
Separated from strong oxidants and strong bases. 
PACKAGING
 
DIBUTYL PHOSPHATE ICSC: 1278
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS LIQUID. 

Physical dangers
 

Chemical dangers
Decomposes on heating and on burning. This produces toxic and corrosive fumes including phosphoric acid. The substance is a medium strong acid. Reacts with strong oxidants. Attacks many metals. This produces flammable/explosive gas (hydrogen - see ICSC 0001). 

Formula: (CH3(CH2)3)2HPO4 / C8H19PO4
Molecular mass: 210.2
Boiling point: 135-138°C
Melting point: -13°C
Relative density (water = 1): 1.06
Solubility in water, g/100ml at 20°C: 1.8
Vapour pressure, kPa at 20°C: 0.13
Relative vapour density (air = 1): 7.2
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.01
Flash point: 188°C o.c.
Auto-ignition temperature: 420°C
Octanol/water partition coefficient as log Pow: 0.6-1.4  


EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation of its aerosol. 

Effects of short-term exposure
The substance is irritating to the eyes, skin and respiratory tract. 

Inhalation risk
A harmful contamination of the air can be reached rather quickly on evaporation of this substance at 20°C. 

Effects of long-term or repeated exposure
 


OCCUPATIONAL EXPOSURE LIMITS
TLV: 5 mg/m3, as TWA; (skin).
MAK: carcinogen category: 3A 

ENVIRONMENT
 

NOTES
 

ADDITIONAL INFORMATION
  EC Classification
 

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    See Also:
       Toxicological Abbreviations
       Dibutyl phosphate (SIDS)