Products
Ascorbic Acid
Product detail
|
Product Name |
Ascorbic acid (Vitamin C) |
|
CAS No. |
50-81-7 |
|
Molecular Formula |
C6H8O6 |
|
Molecular Weight |
176.12 |
|
Structural Formula |
|
|
Quality Standard |
BP2014/USP39/EP7/E300/FCC7 |
|
Packing |
25 kg/carton |
|
Shelf Life |
3 Years |
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Items |
Specification |
|
Characteristics |
White or almost white,Crystalline powder or colourless crystals |
|
Identification |
Corresponds |
|
Melting Point |
189°C ~ 193°C |
|
PH (5%,W/V) |
2.1-2.6 |
|
PH (2%,W/V) |
2.4-2.8 |
|
Specific Optical Rotation |
+20.5° ~ +21.5° |
|
Apperance of Solution |
Clarity: Clear; Colour: ≤BY7 |
|
Heavy Metals |
≤10ppm |
|
Copper |
≤5 ppm |
|
Iron |
≤2 ppm |
|
Mercury |
<1 ppm |
|
Arsenic |
≤3 ppm |
|
Cadmium |
<1 ppm |
|
Lead |
<2 ppm |
|
Loss of Drying |
≤0.4% |
|
Sulphate Ash |
≤0.1% |
|
Oxalic Acid (Impurity E) |
≤0.2% |
|
Related substances |
Impurity C: ≤0.15% Impurity D: ≤0.15% Unspecified impurities: ≤0.10% Total impurities: ≤0.20% |
|
Residual solvents |
Meets the requirements |
|
Assay |
99.0%-100.5% |
