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Sodium Ascorbate
1. Standard: USP29/FCC¢õ
Specification
|
Item |
Value |
|
Appearance |
White
or yellowish crystals or crystalline power |
|
Identification |
Positive reaction
|
|
Specific optical rotation |
+103¡ã~+108¡ã |
|
pH |
7.0 ~ 8.0
|
|
Loss on drying |
¡Ü0.25% |
|
Heavy metals |
¡Ü10ppm |
|
Lead |
¡Ü2ppm |
|
Assay (Calculated on the dried basis) |
99.0%~101.0% |
|
Organic volatile impurities |
Pass |
|
Residual Solvents |
Methanol:
NMT 3000ppm |
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2. Analysis Standard: E301
Specification
|
Item |
Value |
|
Appearance |
White or yellowish crystals or crystalline power |
|
Identification |
Positive reaction |
|
Specific optical rotation |
+103¡ã~+108¡ã |
|
pH |
6.5 ~ 8.0 |
|
Loss on drying |
¡Ü0.25% |
|
Heavy metals |
¡Ü10ppm |
|
Lead |
¡Ü5ppm |
|
Assay (Calculated on the dried basis) |
99.0%~101.0% |
|
Arsenic |
¡Ü3ppm |
|
Mercury |
¡Ü1ppm |
|
Organic volatile impurities |
Pass |
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