Triphenyl phosphate

  • Phenyl phosphate
  • TPP
Formula
(C6H5O)3PO
Structure
Description
Colorless solid, phenol-like odor.
Uses
Noncombustible substitute for camphor in celluloid, impregnating roofing paper, rendering acetylcellulose, nitrocellulose, airplane dope stable & fireproof, plasticizer in lacquers & varnishes.

Registry Numbers and Inventories.
CAS
115-86-6
EC (EINECS/ELINCS)
204-112-2
EC Class
dangerous for the environment
RTECS
TC8400000
RTECS class
Other
UN (DOT)
3077
Merck
12,9872
Beilstein/Gmelin
1888236
Beilstein Reference
4-06-00-00720
Swiss Giftliste 1
G-2086
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C18H15O4P
Formula mass
326.29
Melting point, °C
50 - 51
Boiling point, °C
412
Vapor pressure, mmHg
1E-6 (25 C)
Vapor density (air=1)
1.19
Saturation Concentration
Less than 132 ppm (0.01%) at 30 C (calculated)
Density
1.33 g/cm3 (20 C)
Solubility in water
10 mg/L
Viscosity
9.50 cp (55 C)
Surface tension
38.71 g/s2 (84 C)
Refractive index
1.563
Partition coefficient, pKow
4.10
Heat of vaporization
63.9 kJ/mol
Heat of combustion
-9259 kJ/mol

Hazards and Protection.
Storage
Keep container closed when not in use. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.
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 and clothing to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.
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
Clean up spills immediately, using the appropriate protective equipment. Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Avoid generating dusty conditions. Provide ventilation.
Disposal code
3
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Oxidizing agents.
Decomposition
Phosphine, carbon monoxide, oxides of phosphorus, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
223
Autoignition, °C
> 500
Lower exp. limit, %
0.5
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Extinguishing media: Use carbon dioxide or dry chemical. Use agent most appropriate to extinguish fire.
Fire potential
Slight fire risk when exposed to heat or flame.
Combustion products
Hazardous decomposition products: Toxic gases and vapors (such as phosphoric acid fume and carbon monoxide) may be released in a fire involving triphenyl phosphate.
Health
2
 
Flammability
0
 
 
Reactivity
0
 

Health.
Exposure limit(s)
NIOSH REL: TWA 3 mg/m3 OSHA PEL: TWA 3 mg/m3 1000 mg/m3
Poison_Class
4
Exposure effects
No human cases of peripheral neuropathy due to triphenyl phosphate exposure have been reported. In experimental animals, a delayed onset dying back or distal axonopathy type of peripheral neuropathy is seen.
   Ingestion
May cause irritation of the digestive tract.
   Inhalation
May cause respiratory tract irritation.
   Skin
May cause skin irritation.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. 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
Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. Wash clothing before reuse.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
UN number
3077
Response guide
HS Code
2919 00 10