1,1,2-Triphenylethene

  • Benzene, 1,1',1''-(1-ethenyl-2-ylidene)tris
  • Benzilidenediphenylmethane
Formula
(C6H5)2C=CHC6H5
Structure
Description
White powder.

Registry Numbers and Inventories.
CAS
58-72-0
EC (EINECS/ELINCS)
200-395-1
S 22 24/25
RTECS
KX4920000
RTECS class
Tumorigen; Reproductive Effector
UN (DOT)
1325
Beilstein/Gmelin
1867462
Beilstein Reference
4-05-00-02575
Canada DSL/NDSL
NDSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed

Properties.
Formula
C20H16
Formula mass
256.35
Melting point, °C
67 - 70
Boiling point, °C
358
Vapor pressure, mmHg
5E-5 (25 C)
Density
1.0373 g/cm3 (78.4 C)
Solubility in water
Insoluble
Refractive index
1.6292 (78 C)
Partition coefficient, pKow
7.00
Heat of fusion
20.4 kJ/mol
Heat of vaporization
58.0 kJ/mol

Hazards and Protection.
Storage
Store in a cool, dry place. Keep container closed when not in use.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.
Protection
Eyes: Wear chemical goggles. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.
Respirators
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment.
Disposal code
3
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Avoid contact with strong oxidants
Decomposition
Irritating and toxic fumes and gases.

Fire.
Flash Point,°C
165
Upper exp. limit, %
5.3
Lower exp. limit, %
0.4
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. Extinguishing media: Use agent most appropriate to extinguish fire.
Fire potential
Flammable/combustible material. May be ignited by friction, heat, sparks or flames.
Combustion products
Fire may produce irritating and/or toxic gases.

Health.
Exposure effects
The toxological properties of this substance have not been fully investigated.
   Skin
May cause burns.
   Eyes
See Skin.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid immediately.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Remove contaminated clothing and shoes.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number
1325
Response guide
Hazard class
4.1
Packing Group
II; III
 
HS Code
2902 90 80