Triethyl phosphate

  • ethyl phosphate
  • TEP
Formula
C6H15O4P
Structure
Description
Colorless liquid, mild odor.
Uses
Used as a catalyst in the production of acetic anhydride by the ketene process, as a desensitizing agent for peroxides, and as a solvent and plasticizer for cellulose acetate.

Registry Numbers and Inventories.
CAS
78-40-0
EC (EINECS/ELINCS)
201-114-5
EC Index Number
015-013-00-7
EC Class
Harmful
RTECS
TC7900000
RTECS class
Mutagen; Reproductive Effector; Primary Irritant
Merck
12,9806
Beilstein/Gmelin
1705772
Beilstein Reference
4-01-00-01339
Swiss Giftliste 1
G-2974
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C6H15O4P
Formula mass
182.16
Melting point, °C
-57
Boiling point, °C
215
Vapor pressure, mmHg
0.18 (25 C)
Vapor density (air=1)
6.28
Saturation Concentration
1316 ppm (0.1%) at 39.6 C (calculated)
Density
1.07 g/cm3
Solubility in water
Slightly soluble
Viscosity
1.77 cp (21 C)
Surface tension
30.61 g/s2 (16 C)
Refractive index
1.407 (20 C)
Partition coefficient, pKow
1.08
Heat of vaporization
43.7 kJ/mol

Hazards and Protection.
Storage
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Wash hands before eating. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation. Wash clothing before reuse.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Remove all sources of ignition. Provide ventilation.
Disposal code
3
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents - strong bases.
Decomposition
Carbon monoxide, oxides of phosphorus, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
115
Autoignition, °C
480
Upper exp. limit, %
10
Lower exp. limit, %
1.7
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Containers may explode when heated. Extinguishing media: Water or foam may cause frothing. In case of fire use water spray, dry chemical, carbon dioxide, or chemical foam. Use agent most appropriate to extinguish fire. Cool containers with flooding quantities of water until well after fire is out.
Fire potential
Slight when exposed to heat or flame.
Combustion products
May produce hazardous decomposition products such as carbon dioxide, carbon monoxide and oxides of phosphorus.
Health
1
 
Flammability
1
 
 
Reactivity
1
 

Health.
Poison_Class
4
Exposure effects
Chronic exposure to organic solvents has been associated with various neurotoxic effects including permanent brain and nervous system damage. Chronic ingestion may cause neurological symptoms. Reproductive effects have been reported in animals.
   Ingestion
May cause irritation of the digestive tract. May be harmful if swallowed. May inhibit cholinesterase activity, thereby producing nervous system effects.
   Inhalation
May cause respiratory tract irritation.
   Skin
May cause skin irritation.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear.
   Skin
Get medical aid if irritation develops or persists. Wash clothing before reuse. Flush skin with plenty of soap and water.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
USCG CHRIS Code
TPS
 
HS Code
2919 00 90
 
Std. Transport #
4932054
 
IMO Chemical Code
18
IMO Pollution Category
D