2-硝基-4-羧基苯硼酸
(4-Carboxy-2-nitrophenyl)boronic acid
CAS: 85107-54-6
Molecular Formula: C7H6BNO6
2-硝基-4-羧基苯硼酸 - Names and Identifiers
2-硝基-4-羧基苯硼酸 - Physico-chemical Properties
| Molecular Formula | C7H6BNO6 |
| Molar Mass | 210.94 |
| Density | 1.62±0.1 g/cm3(Predicted) |
| Melting Point | 265-268 |
| Boling Point | 487.1±55.0 °C(Predicted) |
| Flash Point | 248.4°C |
| Vapor Presure | 2.66E-10mmHg at 25°C |
| Appearance | solid |
| Color | white to off-white |
| pKa | 3.33±0.10(Predicted) |
| Storage Condition | under inert gas (nitrogen or Argon) at 2-8°C |
| Refractive Index | 1.619 |
2-硝基-4-羧基苯硼酸 - Risk and Safety
| Risk Codes | R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. R36/37/38 - 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. |
| TSCA | No |
| Hazard Class | IRRITANT |
2-硝基-4-羧基苯硼酸 - Reference Information
| Introduction | 4-carboxy-2-nitrobenzene boronic acid is gray-white crystalline, density: 1.62 g/cm3, Boiling Point: 487.1°C at 760 mmHg, Melting Point: 265-268°C. |
| preparation | add 4-carboxy-phenylboronic acid, concentrated sulfuric acid, magnetic stirring reaction, under 103 ℃ , 4-carboxy-phenylboronic acid began to dissolve, and then continue to heat up to 120 ℃ reaction 2 hours, thin layer chromatography detection of reaction progress, at the end of the reaction, cooling, filtration, filter cake with ether washing, Suction filtration, drying to obtain Gray needle Crystal 4-carboxy-2-nitrobenzene boronic acid. |
Last Update：2024-04-09 21:04:16
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