High purity ASCORBIC ACID VC 50-81-7
East Chemsources Limited was established in 2008, is a professional company engaged in the development of chemical products. In the past of 15 years,through continuous technological innovation and the use of talent introduction advantages, we have achieved rapid development, and has become an international diversified modern chemical enterprise. At present, our products have been exported to more than 80 countries,including food additives, medical raw materials, chemical products and personal care
Since the establishment of the company, always adhere to the credibility first, quality first enterprise creed. Our company is committed to creating a customer-centric, customer-demand-oriented, customer value creation and achievement of customer dreams for the purpose of the service concept, with a broad vision and broad mind, committed to creating good benefits and market operation, to build corporate brand.
Item |
Standard |
|
Characteristics |
White or almost White crystals Crystalline Powder |
|
Identification |
Positive Reaction |
|
Melting Point |
About 190℃ |
|
PH(5% aqueous solution) |
2.1-2.6 |
|
Clarity Of Solution |
Clear |
|
Colour Of Solution |
≤BY7 |
|
Copper |
≤5ppm |
|
Heavy Metals |
≤10ppm |
|
Iron |
≤2ppm |
|
Mercury |
≤0.1ppm
|
|
Lead |
≤2 ppm
|
|
Arsenic |
≤3ppm |
|
Cadmium(Cd)
|
≤1 ppm
|
|
Related Substances
|
Impurity C
|
≤0.1%
|
Unspecified Impurities |
≤0.1% |
|
Total |
≤0.2% |
|
Disregard Limit |
≤0.05% |
|
Oxalic Acid |
≤0.2% |
|
Loss of Drying |
≤0.4% |
|
Sulphate Ash(Residue On Ignition) |
≤0.1% |
|
Specific Optical Rotation |
+20.5°–+21.5° |
|
Organic Volatile Impurities |
Pass |
|
Assay |
99.0%-100.5% |
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