Name | 4-Bromo-2-chlorophenol |
Synonyms | 4-Bromo-2-chL 2-Chloro-4-Bromophenol 2-bromo-3-chlorophenol 4-Bromo-2-chlorophenol 4-BROMO-2-CHLOROPHENOL 2-CHLORO-4-BROMO PHENOL 4-Bromo-2-Chloro Phenol 2-Chloro-4-Bromo Phenol |
CAS | 3964-56-5 |
EINECS | 223-572-5 |
InChI | InChI=1/C6H4BrClO/c7-6-4(8)2-1-3-5(6)9/h1-3,9H |
InChIKey | VIBJPUXLAKVICD-UHFFFAOYSA-N |
Molecular Formula | C6H4BrClO |
Molar Mass | 207.45 |
Density | 1.6170 |
Melting Point | 47-49 °C (lit.) |
Boling Point | 232-235 °C (lit.) |
Flash Point | >230°F |
Water Solubility | Practically insoluble in water |
Solubility | Soluble in water (partly miscible). |
Vapor Presure | 0.037mmHg at 25°C |
Appearance | White Crystals |
Color | White to off-white |
BRN | 2042867 |
pKa | 7.92±0.18(Predicted) |
Storage Condition | Inert atmosphere,Room Temperature |
Refractive Index | 1.5859 |
MDL | MFCD00002166 |
Physical and Chemical Properties | This product is colorless crystal, m. P. 47~49 ℃, slightly soluble in water, soluble in benzene, toluene and other organic solvents. |
Use | It is used as an intermediate of pesticide propylphosphonium bromide, and can also be used in other organic synthesis |
Hazard Symbols | Xi - Irritant |
Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S37/39 - Wear suitable gloves and eye/face protection S24/25 - Avoid contact with skin and eyes. |
UN IDs | UN 3077 9/PG 3 |
WGK Germany | 3 |
HS Code | 29081990 |
Hazard Class | IRRITANT |
NIST chemical information | Information provided by: webbook.nist.gov (external link) |
EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
Uses | 2-chloro-4-bromophenol is an intermediate of the ternary asymmetric organophosphorus insecticide profenofos. Used as an intermediate for the pesticide profenofos, and can also be used in other organic synthesis |
Production method | The preparation method is to obtain 2-chloro-4-bromophenol by bromination of o-chlorophenol. The o-chlorophenol and solvent are quantitatively pumped into the enamel reaction kettle. Under the conditions of stirring, negative pressure and cooling, a certain amount of bromine is slowly added into the kettle. The temperature is controlled at 8~12 ℃. After the bromine is added, the reaction is continued at normal temperature for 2 hours, and then maintained at normal temperature. The quantitative 30% alkali solution is slowly added to neutralize the reactant. After stirring for 0.5 hours, the material is pumped to the layering device and left for more than 4 hours, the lower layer is 55% ~ 60% 2-chloro-4-bromophenol sodium aqueous solution, acidification to obtain 2-chloro-4-bromophenol. |