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[Quality index] in accordance with GB1902-2005 standard for edible grade and BP98 and China national codex 2000 for medicinal grade
Item | GB1902-2005 version | BP98 version | China pharmacopoeia 2000 version |
Content(base onC7H5NaO2 dry basis),% ≥ | 99.0 | 99.0-100.5 | 99.0 |
Drying loss,% ≤ | 1.5 | 2.0 | 1.5 |
Dissolve | Meet the stipulation | Meet the stipulation | / |
Transparency and color | / | Meet the stipulation | / |
Alkalinity acidity; | Meet the stipulation | Meet the stipulation | Meet the stipulation |
Cchloride (base on Cl),≤ | 500PPm | 200PPm | / |
Chloride(base on Cl),≤ | / | 300PPm | / |
Heavy metal(base on Pb),≤ | 10PPm | 10PPm | 10PPm |
As(base on As),≤ | 2PPm | / | 5PPm |
Sulfate (base on SO4),≤ | 1000PPm | / | / |
Readily oxidizable substance | Passed the test | / | / |
o-benzene tricarbonic acid | Passed the test | / | / |
Sodium benzoate & 98%