|
TESTING ITEMS |
SPECIFICATION |
RESULT |
|
IDENTIFICATION |
A:THE INFRARED ABSORPTION SPECTRUM; B:THE REACTION OF PRIMARY AROMATID AMINES; C:THE TESTS OF SODIUM |
COMPLIES |
|
CHARACTERISTICS |
WHITE or CREAMY WHITE POWDER or CRYSTALLINE |
COMPLIES |
|
CLARITY AND COLOR OF SOLUTION |
NOT MORE COLOURED THAN Y4 |
CLEAR,< Y4 |
|
ALKALINITY |
PH=10.0-11.0 |
PH=10.5 |
|
RELATED SUBSTANCES |
MEETS(≤0.5%) |
COMPLIES,<0.5% |
|
LOSS ON DRYING |
≤2.0% |
0.5% |
|
ASSAY(%) |
98.0%-101.0% (THE DRIED SUBSTANCE) |
100.0% (THE DRIED SUBSTANCE) |
Descriptors: white or light yellow crystal or powder, odourless or almost odourless, taste bitter and hygroscopicity, the goods in the water soluble, slightly soluble in ethanol in.
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