Carbon tetrabromide

  • Tetrabromomethane
Formula CBr4
Structure
Description Colorless crystals or tablets with a slight odor.
Uses Organic synthesis.

Registry Numbers and Inventories.
CAS 558-13-4
EC (EINECS/ELINCS) 209-189-6
EC Class harmful, irritant
EC Risk Phrase R 20/21/22 36/37/38
EC Safety Phrase S 23 26 36/37/39
RTECS FG4725000
RTECS class Other
UN (DOT) 2516
Beilstein/Gmelin 1732799
Beilstein Reference 4-01-00-00085
Canada DSL/NDSL DSL
US TSCA Listed
Austrailia AICS Listed
New Zealand Listed
Japan ENCS (MITI) Listed

Properties.
Formula CBr4
Formula mass 331.65
Melting point, °C 49
Boiling point, °C 190
Vapor pressure, mmHg 1.2 (25 C)
Vapor density (air=1) 11.4
Density 3.42 g/cm3
Solubility in water Insoluble
Viscosity 2.44 cp (101 C)
Refractive index 1.5942 (100 C)
Partition coefficient, pKow 3.42
Heat of vaporization 42.00 kJ/mol
Heat of combustion -423 kJ/mol

Hazards and Protection.
Storage No special storage requirements.
Handling Wash thoroughly after handling.
Protection Eyes: Wear safety glasses and chemical goggles if splashing is possible. Skin: Wear appropriate protective gloves and clothing to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.
Respirators Wear a NIOSH/MSHA or European Standard EN 149 approved full-facepiece airline respirator in the positive pressure mode with emergency escape provisions.
Small spills/leaks Sweep up, then place into a suitable container for disposal.
Disposal code 3
Stability Stable under normal temperatures and pressures.
Incompatibilities Strong oxidizing agents, strong bases, lithium, hexacyclohexcyldilead.
Decomposition Carbon monoxide, carbon dioxide, hydrogen bromide.

Fire.
Flash Point,°C 65
Fire fighting Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Water runoff can cause environmental damage. Dike and collect water used to fight fire. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. To extinguish fire, use water fog, dry chemical, carbon dioxide, or regular foam.
Fire potential Not flammable by standard tests in air
Hazards Containers may explode when heated. Runoff may pollute waterways.
Combustion products Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
NFPA Health 2
  Flammability 0  
  Reactivity 0  

Health.
Exposure limit(s) TLV: 0.1 ppm; 1.4 mg/m3 (as TWA); 0.3 ppm; 4.1 mg/m3 (as STEL) (ACGIH 1991-1992). NIOSH REL: TWA 0.1 ppm (1.4 mg/m3) ST 0.3 ppm (4 mg/m3)
Exposure effects Chronic exposure may cause liver damage.
   Ingestion Poison by ingestion.
   Inhalation May cause burning sensation, coughing, wheezing, laryngitis, shortness of breath, headache, nausea, and vomiting. Inhalation of dust causes severe irritation of the nose and throat. Vapors are extremely irritating to the respiratory tract.
   Skin Harmful if absorbed through the skin.
   Eyes Lachrymator. Contact may cause irritation, tearing, and burning pain.

First aid		  
   Ingestion Do NOT induce vomiting. Never give anything by mouth to an unconscious person.
   Inhalation Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Do not use mouth-to-mouth respiration if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device.
   Skin 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. Do NOT allow victim to rub or keep eyes closed.

Transport.
UN number 2516
Response guide 151
Hazard class 6.1
Packing Group III  
HS Code 2903 30 36  
Std. Transport # 4925158