1,2,4,5-Tetrachlorobenzene

  • Tetrachlorobenzene
Formula
C6H2Cl4
Structure
Description
White crystalline solid.
Uses
In synth of 2,4,5-trichlorophenate sodium.

Registry Numbers and Inventories.
CAS
95-94-3
EC (EINECS/ELINCS)
202-466-2
EC Class
harmful
R 22 36/37/38
S 26 36/37/39
RTECS
DB9450000
RTECS class
Tumorigen
UN (DOT)
2811
Beilstein/Gmelin
1618315
Beilstein Reference
4-05-00-00668
RCRA
U207
Swiss Giftliste 1
G-6290
Canada DSL/NDSL
DSL
US TSCA
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C6H2Cl4
Formula mass
215.89
Melting point, °C
136
Boiling point, °C
246
Vapor pressure, mmHg
0.042 (25 C)
Vapor density (air=1)
7.4
Saturation Concentration
Less than 130 ppm at 25 C
Critical temperature
489.8
Critical pressure
3.3
Density
1.732 g/cm3
Solubility in water
Insoluble
Partition coefficient, pKow
4.60
Heat of vaporization
46.5 kJ/mol

Hazards and Protection.
Storage
Store in a cool, dry, well-ventilated area away from incompatible substances. Keep containers tightly closed.
Handling
Wash thoroughly after handling. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. 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
Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents - strong bases.
Decomposition
Hydrogen chloride, carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
108
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Flammable when exposed to flame. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam.
Fire potential
This chemical is combustible.
Hazards
Contact with metals may evolve flammable hydrogen gas.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
2
 
Flammability
1
 
 
Reactivity
0
 

Health.
Poison_Class
4
Exposure effects
   Ingestion
May cause irritation of the digestive tract. May be harmful if swallowed.
   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 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
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. 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
2811
Response guide
Hazard class
6.1
Packing Group
I; II; III
 
USCG CHRIS Code
TCZ
 
HS Code
2903 69 90