| CAS No.: | 50-81-7 |
|---|---|
| Formula: | C6h8o6 |
| EINECS: | as Per COA |
|
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Testing Item |
Standard |
Result |
Assay |
99.0%~100.5% |
99.72% |
Appearance |
White or almost White crystals Crystalline Powder |
conforms |
Solubity |
Easily soluble in water |
conforms |
Identification |
Positive Reaction |
Positive |
Melting Point |
About 190ºC |
190.6ºC |
Copper |
≤5 mg/kg |
<5 mg/kg |
Heavy Metals |
≤10 mg/kg |
<10 mg/kg |
Mercury |
≤0.1 mg/kg |
<0.1 mg/kg |
Lead |
≤2 mg/kg |
<2 mg/kg |
Arsenic |
≤3 mg/kg |
<3 mg/kg |
Oxalic Acid |
≤0.2% |
<0.2% |
Iron |
≤2 mg/kg |
<2 mg/kg |
Cadmium(Cd) |
<1 mg/kg |
<1 mg/kg |
Impurity E |
≤0.2% |
<0.2% |
Loss on Drying |
≤0.4% |
<0.4% |
Sulphate Ash(Residue On Ignition) |
≤0.1% |
<0.1% |
Specific Optical Rotation |
+20.5ºC~+21.5ºC |
21.08ºC |
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