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 |
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 |
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. |