1,3,5-Trichlorobenzene

  • sym-Trichlorobenzene
Formula
C6H3Cl3
Structure
Description
White to off-white crystals.
Uses
Component in trichlorobenzene mixt as dye solvent, degreasing solvent, dielectric fluid, & as lubricant additive.

Registry Numbers and Inventories.
CAS
108-70-3
EC (EINECS/ELINCS)
203-608-6
R 22 51/53
S 36/37 60 61
RTECS
DC2100100
RTECS class
Mutagen; Primary Irritant
UN (DOT)
2811
Merck
12,9761
Beilstein/Gmelin
1635233
Beilstein Reference
4-05-00-00666
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C6H3Cl3
Formula mass
181.45
Melting point, °C
63.4
Boiling point, °C
208.4
Vapor pressure, mmHg
5 (9 C)
Vapor density (air=1)
6.26
Critical temperature
470.8
Critical pressure
29.7
Density
1.4604 g/cm3 (20 C)
Solubility in water
Insoluble
Viscosity
8.93 cp (64 C)
Refractive index
1.5662 (20 C)
Partition coefficient, pKow
4.19
Heat of vaporization
54.0 kJ/mol
Heat of combustion
-2782 kJ/mol

Hazards and Protection.
Storage
Store in a cool, dry place. Store in a tightly closed container.
Handling
Wash thoroughly after handling. Use only in a well ventilated area. Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes. 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 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
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents, acids.
Decomposition
Hydrogen chloride, carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
107
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. To extinguish fire use water spray, dry chemical, carbon dioxide, or chemical 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.
Exposure effects
Prolonged or repeated skin contact may cause dermatitis. May cause liver and kidney damage. Chronic exposure can affect thyroid function.
   Ingestion
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May cause liver and kidney damage. May be harmful if swallowed.
   Inhalation
May cause respiratory tract irritation.
   Skin
Causes 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.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing 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.

Transport.
UN number
2811
Response guide
Hazard class
6.1
Packing Group
I; II; III
 
USCG CHRIS Code
CLF
 
36 Halogenated hydrocarbons