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
R 20/21/22 36/37/38
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.
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
Hazard class
6.1
Packing Group
III
 
HS Code
2903 30 36
 
Std. Transport #
4925158