Name | 3,4-dibromobenzoic acid |
Synonyms | RARECHEM AL BE 1504 3,4-DIBROMOBENZOIC ACID 3,4-dibromobenzoic acid Benzoic acid, 3,4-dibromo- benzoic acid, 3,4-dibromo- |
CAS | 619-03-4 |
InChI | InChI=1/C7H4Br2O2/c8-5-2-1-4(7(10)11)3-6(5)9/h1-3H,(H,10,11) |
Molecular Formula | C7H4Br2O2 |
Molar Mass | 279.91 |
Density | 2.083±0.06 g/cm3(Predicted) |
Melting Point | 235-236 °C |
Boling Point | 356.0±32.0 °C(Predicted) |
Flash Point | 169.1°C |
Vapor Presure | 1.1E-05mmHg at 25°C |
pKa | 3.58±0.10(Predicted) |
Storage Condition | Sealed in dry,Room Temperature |
Refractive Index | 1.642 |
Use | 3, 4-dibromobenzoic acid is a colorless crystal with a boiling point of 276 °c at room temperature. As a pharmaceutical intermediate, it is widely used in the molding process of high molecular plastics, as a special plasticizer, a compound or a mixture of compounds that is added to a polymeric resin to provide flexibility and toughness. |
preparation | toluene was nitrated, para-product was taken and reduced with Fe/HCl to obtain p-aminotoluene, this product was directly brominated to give 1-amino -2, 5-dibromo-4-methylbenzene, then reacted with NaNO2/HCl to obtain a diazonium salt, and then reduced with H2PO3 to give 3, 4-dibromotoluene, finally, potassium permanganate was oxidized to give 3, 4-dibromobenzoic acid. |