Hexachloroethane

  • Carbon hexachloride
  • Perchloroethane
Formula
CCl3CCl3
Structure
Description
Rhombic crystals from alcohol and ether. Camphor-like odor.
Uses
Hexachloroethane is contained in pyrotechnics. It inhibits the explosiveness of methane and the combustion of ammonium perchlorate. Smoke containing hexachloroethane is used to extinguish fires.

Registry Numbers and Inventories.
CAS
67-72-1
EC (EINECS/ELINCS)
200-666-4
R 45 51/53
S 53 60 61
RTECS
KI4025000
RTECS class
Agricultural Chemical and Pesticide; Tumorigen; Drug; Mutagen; Reproductive Effector
UN (DOT)
9037
Merck
13,4698
Beilstein/Gmelin
1740341
Beilstein Reference
4-01-00-00148
RCRA
U131
EPA OPP
45201
Swiss Giftliste 1
G-1678
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C2Cl6
Formula mass
236.74
Boiling point, °C
189
Vapor pressure, mmHg
0.9 (25 C)
Vapor density (air=1)
8.16
Odor Threshold Odor threshold 1x10-2 mg/L in water
Density
2.091 g/cm3
Solubility in water
Insoluble
Partition coefficient, pKow
4.14
Heat of vaporization
40.6 kJ/mol
Heat of combustion
-461 kJ/mol

Hazards and Protection.
Storage
Store in a cool, dry place. Keep container closed when not in use.
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
Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Metals, strong oxidizing agents, strong bases, alkalies.
Decomposition
Phosgene, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, chloride fumes.

Fire.
Flash Point,°C
61
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. To extinguish fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
Fire potential
Nonflammable.
Combustion products
Irritating hydrogen chloride vapor may form in fire.
Health
2

Health.
Exposure limit(s)
OSHA PEL: TWA 1 ppm (10 mg/m3) skin NIOSH REL: Ca TWA 1 ppm (10 mg/m3) skin See Appendix A See Appendix C (Chloroethanes) NIOSH IDLH: Potential occupational carcinogen 300 ppm
Carcinogin
G-A3, I-2B, N-2, CP65
Poison_Class
2
Exposure effects
Possible cancer hazard based on tests with laboratory animals. May cause liver and kidney damage.
   Ingestion
May cause central nervous system depression, kidney damage, and liver damage. May cause gastrointestinal irritation with nausea, vomiting and diarrhea.
   Inhalation
Causes irritation of mucous membrane. Causes upper respiratory tract irritation.
   Skin
Causes skin irritation.
   Eyes
Causes eye irritation. May result in corneal injury.

First aid
 
   Ingestion
Do NOT induce vomiting. 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
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 immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   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
9037
Response guide
Hazard class
6.1
USCG CHRIS Code
HCE
 
Std. Transport #
4941225