4-Bromomandelic acid
4-Bromomandelic acid
CAS: 6940-50-7
Molecular Formula: C8H7BrO3
4-Bromomandelic acid - Names and Identifiers
4-Bromomandelic acid - Physico-chemical Properties
| Molecular Formula | C8H7BrO3 |
| Molar Mass | 231.05 |
| Density | 1.6494 (rough estimate) |
| Melting Point | 116-118°C(lit.) |
| Boling Point | 397.5±27.0 °C(Predicted) |
| Flash Point | 194.2°C |
| Water Solubility | Slightly soluble in water. |
| Vapor Presure | 4.96E-07mmHg at 25°C |
| Appearance | Crystalline Powder or Flakes |
| Color | White to beige |
| Merck | 14,1424 |
| BRN | 1567909 |
| pKa | 3.14±0.10(Predicted) |
| Storage Condition | Sealed in dry,Room Temperature |
| Refractive Index | 1.4730 (estimate) |
| MDL | MFCD00004232 |
| Physical and Chemical Properties | Character White needle-like or plate-like crystals. melting point 117~118 ℃ solubility: soluble in water, soluble in ethanol, ether and acetic acid, soluble in hot benzene and hot chloroform. |
4-Bromomandelic acid - Risk and Safety
| 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. S36 - Wear suitable protective clothing. S24/25 - Avoid contact with skin and eyes. |
| WGK Germany | 3 |
| TSCA | T |
| HS Code | 29181980 |
| Hazard Class | IRRITANT |
4-Bromomandelic acid - Reference Information
| introduction | p-brommandelic acid is a white crystal. Soluble in water, soluble in ethanol, ether and acetic acid, soluble in hot benzene and hot chloroform. |
| Application | p-brommandelic acid can be used as a sensitive reagent for the determination of zirconium, from titanium, iron, aluminum, separation of zirconium from copper and other metals. |
| first aid measures | you should be careful when using p-brommandelic acid, which may decompose under combustion or high temperature to produce toxic smoke. Handle in a well-ventilated place. Wear appropriate protective gear. Prevent dust from spreading. Wash hands and face thoroughly after treatment. If dust or aerosol is generated, use local exhaust. Avoid contact with skin, eyes and clothing. |
| chemical properties | white needle-like or flake-like crystals. Soluble in water, soluble in ethanol, ether and acetic acid, soluble in hot benzene and hot chloroform. |
| uses | organic synthesis intermediates and analytical reagents. |
| production method | is obtained by condensation, bromination, hydrolysis and acidification of bromobenzene. 1. Condensation bromobenzene, carbon disulfide and anhydrous aluminum trichloride are slightly heated together until carbon disulfide refluxes, slowly add acetic anhydride, and continue to refluxes for 2 hours after addition. Recover carbon disulfide, pour it into hydrochloric acid ice water, and filter out to obtain p-bromoacetophenone. 2. Bromination Dissolve p-bromoacetophenone in acetic acid, and slowly add the mixture of bromine and acetic acid at 25-45 ℃. Filter the reactants, wash the crystals with dilute ethanol, and filter dry to obtain tribromine. 3. Hydrolysis and acidification Heat 10% sodium hydroxide solution to 10 ℃, add tribromine, and stir for 3-4h below 20 ℃. Filter, add hydrochloric acid to the filtrate to pH = 1, cool to 10 ℃, filter and dry to obtain crude product. Then use benzene to recrystallize to obtain the finished product. |
| NIST chemical information | The information is: webbook.nist.gov provides (external link) |
| EPA chemical information | The information is: offered by ofmpub.epa.gov (external link) |
Last Update：2024-04-09 20:52:54
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View History
4-Bromomandelic acid
Protonitazene hydrochloride
Tetradecyl sodium sulfate
孕烯雌酮
UN1567
2-CHLOROETHYL ETHYL SULFIDE
Luperox 26M50
Flucarbazone sodium salt
异松油烯
Eulan SP
Protonitazene hydrochloride
Tetradecyl sodium sulfate
孕烯雌酮
UN1567
2-CHLOROETHYL ETHYL SULFIDE
Luperox 26M50
Flucarbazone sodium salt
异松油烯
Eulan SP