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Product Name |
4-Aminosalicylic acid |
||
Formula |
C7H7NO3 |
Molecular Weight |
153.14 |
CAS NO. |
65-49-6 |
Quantity |
500KG |
Items |
Specification |
Results |
Appearance |
White or slightly yellow powder |
Conforms |
Assay |
≥98% |
99.5% |
Water |
≤0.5% |
0.14% |
PH |
3.0-3.7 |
3.2 |
CONCLUSION |
The result conform with standard |
Melting point: 135-145 ° C (lit.)
Boiling point: 276.03 ° C (roughestimate)
Density: 1.3585 (roughestimate)
Refractive index: 1.5500 (estimate)
Storage conditions: keepinmarkplace, inertatatmosphere, roomtemperature
Solubility: 1.69g/l
Acidity coefficient: (PKA) 3.25 (AT25 ℃)
PH value: 3.5 (1g/l, H2O, 20 ℃)
It is a pharmaceutical intermediate used to synthesize the anti tuberculosis drug sodium p-aminosalicylate. It is also used to analyze reagent acid-base fluorescent indicators.