Name | 2,2'-Dibromobiphenyl |
Synonyms | PBB NO 4 NSC 91566 2,2-Dibromophenyl 2,2-Dibromobiphenyl o,o'-Dibromobiphenyl 2,2'-Dibromobiphenyl 2,2′-dibroModiphenyl 2,2'-dibromodiphenyl Biphenyl, 2,2'-dibromo- 2,2'-Dibromo-1,1'-biphenyl 1-broMo-2-(2-broMophenyl)benzene |
CAS | 13029-09-9 |
EINECS | 625-732-3 |
InChI | InChI=1/C12H8Br2/c13-11-7-3-1-5-9(11)10-6-2-4-8-12(10)14/h1-8H |
InChIKey | DRKHIWKXLZCAKP-UHFFFAOYSA-N |
Molecular Formula | C12H8Br2 |
Molar Mass | 312 |
Density | 1.667 |
Melting Point | 79-83 °C |
Boling Point | 332.9±17.0 °C(Predicted) |
Flash Point | 180°C |
Water Solubility | Insoluble in water. |
Vapor Presure | 0.007-0.27Pa at 20-50℃ |
Appearance | White to brown powder or solid |
Color | White |
Storage Condition | Sealed in dry,Room Temperature |
Refractive Index | 1.625 |
MDL | MFCD00093707 |
Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R22 - Harmful if swallowed |
Safety Description | S37/39 - Wear suitable gloves and eye/face protection S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S60 - This material and its container must be disposed of as hazardous waste. S36/37 - Wear suitable protective clothing and gloves. |
UN IDs | UN3152 |
WGK Germany | 3 |
HS Code | 29039990 |
Hazard Class | 9 |
Packing Group | II |
LogP | 4.6 at 25℃ and pH6.2 |
EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
introduction | 2,2 '-bisbrominobenzene has a white or off-white solid powder appearance at normal temperature and pressure, and can be used as an intermediate in organic synthesis. It is a commercial organic synthon, which has good solubility in common organic solvents such as dimethyl sulfoxide, N,N-dimethylformamide, ethyl acetate, dichloromethane, and chloroform. But it has poor solubility in water. |
Uses | 2,2 '-bisbromobiphenyl is a commercial organic synthon, the main purpose is to participate in organic luminescent materials as a molecular skeleton And the construction of conjugated macromolecules. The two bromine atoms in its structure can undergo Suzuki coupling reactions separately and in batches, and can also couple the two bromine atoms in one step at the same time to form a conjugated structure of the ring. |
synthesis method | for the synthesis of 2,2 '-bis-brominobenzene, the most practical method is also the most used starting from o-dibromobenzene and stirring at low temperature under the action of n-butyl lithium to obtain the target product. The reaction is simple and efficient, and the post-treatment is relatively simple. It should be pointed out that the reaction may be an intermediate that has experienced a benzyne. |