Product Description
| PRODUCT NAME: |
COATED ASCORBIC ACID |
| SHELF LIFE: |
24 months |
| PACKING: |
25kgs/carton |
| STANDARD |
GB26687-2011 |
| ITEM |
STANDARD |
| Appearance |
White or Semi-white Granule |
| Heavy metals |
≤0.001% |
| Arsenic |
≤0.0002% |
| Lead |
≤0.0002% |
| Loss on drying |
≤0.4% |
| Residue on ignition |
≤0.1% |
| Assay |
≥97.0% |
| Total plate count |
≤1000cfu/g |
| Mould&Yeast |
≤100cfu/g |
| E-coli. |
Absence in 1g |
| Salmonella |
Absence in 25g |
| Staphylococcus Aurers |
Absence in 25g |
| Item |
Standard |
| Appearance |
White or almost white, crystalline powder or colourless crystals |
| Melting point |
About 190ºC. with decomposition |
| Infrared absorption spectrum |
Infrared absorption spectrum accord with the referance spectrum of ascorbic acid CRS |
| PH(With 5% water solution) |
2.1-2.6 |
| PH(With 2% water solution) |
2.4-2.8 |
| Appearance of solution |
Clarity; clear; colour: ≤BY7 |
| Specific optical rotation |
20.5ºC- 21.5ºC |
| Loss on drying |
≤0.4% |
| Impurity E |
≤0.2% |
| Related substance |
Impurity C: ≤0.15% |
| Impurity D: ≤0.15% |
| Unpecified impurities:≤0.10% |
| Total impurities:≤0.20% |
| Copper |
≤5.0ppm |
| Iron |
≤2.0ppm |
| Arisenic |
≤3.0ppm |
| Lead |
≤2.0ppm |
| Mercury |
≤1.0ppm |
| Cadmium |
≤1.0ppm |
| Heavy metals |
≤10ppm |
| Sulphated ash |
≤0.1% |
| Assay |
99.0% ~ 100.5% |
Since 1998, TNN Group has been founded for over 2 decades. Head quarter locates in Dalian -the most beautiful coastal city in Liaoning, China. Currently, TNN has 33 staffs, self-owned offices, cooperative laboratory, independent e-commerce platform, ISO9001 and CE certification, independent trademark and other high-level professional office equipment and institutional certifications, 3 overseas companies, 2 domestic offices and two subsidiaries.
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