INTRODUCTION
A colorless crystalline solid. Much denser than water and insoluble in water but soluble in chloroform and ethanol. Toxic by ingestion. Vapors are narcotic in high concentration. It is commonly employed as an electron acceptor in organic synthesis reactions. Carbon tetrabromide is also an efficient catalyst for regioselective ring opening of epoxides with alcohols.
Manufacture
It is made via bromination of methane using HBr or Br2. It can be also prepared by more economical reaction of tetrachloromethane with aluminium bromide at 100 °C.
| Synonyms | Tetrabromomethane Perbromomethane |
| Cas no. | 558-13-4 |
| EINECS no. | 209-189-6 |
| Molecular formula | CBr4 |
| Molecular weight | 331.62 |
| Structure |  |
Applications
CBr4 is used in a variety of industries
| It is used as a solvent for greases, waxes, and oils |
| In plastic and rubber industry for blowing and vulcanization |
| As a sedative for polymerization |
| As an intermediate in manufacturing of Perbromoethylene, Tribromobutylene oxide & agrochemicals |
| Due to its non-flammability, it is used as an ingredient in fire-resistant chemicals |
| It is used for separating minerals because of its high density |
| In combination with triphenylphosphine, CBr4 is used in the Appel reaction, which converts alcohols to alkyl bromides |
| As a transfer agent for the copolymerization of methyl methacrylate and p-divinylbenzene to form soluble crosslinked polymers |
| As a catalyst for the aerobic photooxidative synthesis of aromatic esters from benzyl alcohols under metal-free conditions |
| Bromination of adamantane and its derivatives in the presence of iron compounds as catalyst |
SPECIFICATIONS
| Test | Unit | Specification |
|---|---|---|
| Appearance | – | White to off-white crystalline powder |
| Assay (by GC) | % | Min 98.0 |
| Melting point | °C | 88.0 – 93.0 |
STORAGE
Keep container tightly closed in a dry and well-ventilated place.
PACKING
25 kg or 50 kg UN approved HDPE Drum.
REACH Status
Not registered yet.
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