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TRIETHYLPHOSPHATE
ICSC: 1730
Peer-Review Status: 02.04.2009 Validated
Ethyl phosphate
Phosphoric acid, triethyl ester
Triethoxyphosphine oxide
TEP 
CAS #: 78-40-0 RTECS #: TC7900000
UN #: 3278
EC #: 015-013-00-7
EINECS #: 201-114-5
    Formula: C6H15O4P / (C2H5)3PO4
Molecular mass: 182.2

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 powder, alcohol-resistant foam, water spray, carbon dioxide. 
EXPLOSION      
 
EXPOSURE      
Inhalation See Ingestion.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. 
Skin   Protective gloves.  Rinse skin with plenty of water or shower. 
Eyes Redness.  Wear safety goggles.  Rinse with plenty of water (remove contact lenses if easily possible). 
Ingestion Dizziness. Drowsiness. Weakness. Unconsciousness.  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. Collect leaking liquid in sealable containers. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations. Wash away remainder with plenty of water.   
EC Classification
Symbol: Xn; R: 22; S: (2)-25 
UN Classification
UN Hazard Class: 6.1; UN Pack Group: III 
GHS Classification
Signal: Warning
Harmful if swallowed
May cause drowsiness or dizziness 
excl mark;warn

EMERGENCY RESPONSE SAFE STORAGE
NFPA Code: H1; F1; R1.  Separated from strong oxidants and strong bases. Well closed. Ventilation along the floor. 

IMPORTANT DATA
Physical State; Appearance
COLOURLESS LIQUID WITH CHARACTERISTIC ODOUR. 

Physical dangers
No data. 

Chemical dangers
Decomposes on burning. This produces toxic fumes including phosphorus oxides. Reacts violently with strong bases and strong oxidants. This produces heat. 

Occupational exposure limits
TLV not established.
MAK (not established):. 

Routes of exposure
The substance can be absorbed into the body 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. 

Effects of short-term exposure
The substance is mildly irritating to the eyes. The substance may cause effects on the central nervous system. 

Effects of long-term or repeated exposure
 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point: 215°C
Melting point: -57°C
Relative density (water = 1): 1.07
Solubility in water: miscible
Vapour pressure, Pa at 20°C: 20
Relative vapour density (air = 1): 6.3
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.00
Flash point: 116°C o.c.
Auto-ignition temperature: 452°C
Octanol/water partition coefficient as log Pow: 0.8  
 

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
       Triethylphosphate  (SIDS)