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TRIBUTYL PHOSPHATE
ICSC: 0584
Peer-Review Status: 18.10.2005 Validated
Tri-n-butyl phosphate
Phosphoric acid, tributyl ester 
CAS #: 126-73-8 RTECS #: TC7700000
EC #: 015-014-00-2
EINECS #: 204-800-2
    Formula: C12H27O4P / (C4H9)3PO4
Molecular mass: 266.3

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire.  NO open flames.  Use water spray, foam, powder, carbon dioxide. 
EXPLOSION      
 
EXPOSURE   PREVENT GENERATION OF MISTS!   
Inhalation Cough. Headache. Nausea. Sore throat.  Use local exhaust or breathing protection.  Fresh air, rest. 
Skin Redness. Pain.  Protective gloves.  Remove contaminated clothes. Rinse skin with plenty of water or shower. 
Eyes Redness. Pain.  Wear safety goggles.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion   Do not eat, drink, or smoke during work.  Rinse mouth. Refer for medical attention . 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Collect leaking liquid in sealable non-plastic containers. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations.   
EC Classification
Symbol: Xn; R: 22-38-40; S: (2)-36/37-46 
UN Classification
 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
NFPA Code: H3; F1; R0.  Store in an area without drain or sewer access. Separated from bases and strong oxidants. 

IMPORTANT DATA
Physical State; Appearance
COLOURLESS ODOURLESS VISCOUS LIQUID. 

Physical dangers
 

Chemical dangers
Decomposes on burning. This produces toxic fumes including phosphorus oxides. Reacts with warm water. This produces corrosive phosphoric acid and butanol. Attacks some forms of plastic, rubber and coatings. Reacts with bases and strong oxidants. 

Occupational exposure limits
TLV: 0.2ppm as TWA; BEI issued; (ACGIH 2005).
MAK: 1 ppm; Carcinogen category: 4; Peak limitation category: II(4); Pregnancy risk group: C; Skin absorption (H); (DFG 2005). 

Routes of exposure
The substance can be absorbed into the body by inhalation of its vapour, through the skin and by ingestion. 

Inhalation risk
A harmful contamination of the air will not or will only very slowly be reached on evaporation of this substance at 20°C; on spraying or dispersing, however, much faster. 

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

Effects of long-term or repeated exposure
Ingestion may cause effects on the bladder. This may result in tissue lesions. 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Decomposes at 289°C
Melting point: <-80°C
Relative density (water = 1): 0.98
Solubility in water: poor
Vapour pressure, Pa at 25°C: 0.15
Relative vapour density (air = 1): 9.2
Flash point: 146°C o.c.
Auto-ignition temperature: >482°C
Octanol/water partition coefficient as log Pow: 4.0  
The substance is toxic to aquatic organisms. 

NOTES
 

ADDITIONAL INFORMATION
 

IPCS
International
Programme on
Chemical Safety
WHO ILO EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012
LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.


    See Also:
       Toxicological Abbreviations
       Tributyl phosphate (EHC 112, 1991)
       Tributyl phosphate (SIDS)