2-Amino-5-nitropyridine CAS 4214-76-0 is derived from the nitration of 2-aminopyridine. At a temperature of 50 °C, 2-aminopyridine was added to concentrated sulfuric acid, and then fuming nitric acid was added dropwise, and the temperature did not exceed 50 °C. Incubate at 45°C for 2h, and stir at room temperature for 4h. The reaction solution was poured into crushed ice, and the pH was adjusted to 6 by adding ammonia water below 5°C, and crystals were precipitated. Filter and dry. Recrystallization with water to obtain pale yellow platelets, yield 75%
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Product Name |
2-Amino-5-nitropyridine |
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Formula |
C5H5N3O2 |
Molecular Weight |
139.11 |
CAS NO. |
4214-76-0 |
Quantity |
500KG |
Items |
Specification |
Results |
Appearance |
Yellow Crystalline Powder |
Conforms |
Assay |
99% | 99.28% |
CONCLUSION |
The result conform with standard |
Melting point 186-188°C (lit.)
Boiling point 255.04°C (roughestimate)
Density 1.4551 (roughestimate)
Refractive index 1.5900 (estimate)
Flash point 224°(435°F)
Storage conditions Keepindarkplace, Inertatmosphere, Roomtemperature
Solubility 1.6g/l
MorphologyCrystallinePowder
Acidity coefficient (pKa) 2.82±0.13 (Predicted)
ColorYellow
Sensitivity LightSensitive
2-Amino-5-nitropyridine is used in organic synthesis,