Item | Especificação | Test Results |
Aparência | Pó branco | Passed |
Purity (on dry base ) % | 98.0-102.0 | 99.2 |
Melting Point ºC | 125-128 | 127.3 |
Acid |
Not more than 0.1 ml of 0.1 N sodium hydroxide
is required to produce a blue color | Passed |
Identificação |
A. Infrared absorption
Spectrophotometry B. Thin-Layer Chromatographic | Passed |
Residue % | ≤0.1 | 0.05 |
Loss on drying % | ≤0.5 | 0.3 |
Heavy Metal ( Pb) | ≤10 ppm | Passed |
Solventes residuais
(Methanol) | <3000PPM | Passed |
Related Substances |
P-Hydroxybenzoic acid: ≤0.5%
Unspecified impurities: ≤0.5% Total impurities: ≤1.0% | Passed |
Color of solution | 100mg/ml in alcohol,The solution is clear. | Passed |
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