Bibenzyl

  • Dibenzyl
  • 1,2-Diphenylethane
Formula
C14H14
Structure
Description
White solid.

Registry Numbers and Inventories.
CAS
103-29-7
EC (EINECS/ELINCS)
203-096-4
S 22 24/25
RTECS
DT4375000
RTECS class
Other
UN (DOT)
1325
Merck
12,1245
Beilstein/Gmelin
508068
Beilstein Reference
4-05-00-01871
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C14H14
Formula mass
182.27
Melting point, °C
52 - 54
Boiling point, °C
284
Vapor pressure, mmHg
0.006 (25 C)
Vapor density (air=1)
6.26
Critical temperature
528
Critical pressure
31.19
Density
1.12 g/cm3
Solubility in water
Insoluble
Viscosity
1.54 cp (80 C)
Surface tension
34.31 g/s2 (60 C)
Refractive index
1.5476 (60 C)
Partition coefficient, pKow
4.70
Heat of fusion
23.66 kJ/mol
Heat of vaporization
49.8 kJ/mol

Hazards and Protection.
Storage
Store in a cool, dry place. Store in a tightly closed container.
Handling
Wash thoroughly after handling. Use with adequate ventilation. 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 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
Sweep up, then place into a suitable container for disposal.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
106
Autoignition, °C
480
Upper exp. limit, %
4.2
Lower exp. limit, %
0.6
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 water spray, dry chemical, or foam.
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
0
 
Flammability
1
 
 
Reactivity
0
 

Health.
Exposure effects
The toxological properties of this substance have not been fully investigated.
   Ingestion
May cause irritation of the digestive tract. The toxicological properties of this substance have not been fully investigated.
   Inhalation
May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.
   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. Get medical aid immediately.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   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.
   Eyes
Immediately 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
 
32. Aromatic hydrocarbons
HS Code
2902 90 80