OUR INDUSTRIES
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ASCORBIC ACID CRYSTALLINE POWDER - DFI-806999
Published: 05/04/2017Description
| Country of origin | China |
| Shelf life | 36 Months |
| Characteristic | White or almost white crystalline powder or colourless crystals |
Specification
| Identification | IR Complies |
| Identification | Positive |
| Assay | 99 to 100.5% |
| Acidity(5% aqueous solution) | 2.1 to 2.6 |
| Acidity(2% aqueous solution) | 2.4 to 2.8 |
| Clarity | Clear |
| Colour | < BY7 |
| Heavy metals | Max:10ppm |
| Copper | Max:5ppm |
| Iron (Fe) | Max:2ppm |
| Lead | Max:2ppm |
| Arsenic | Max:3ppm |
| Mercury | Max:1ppm |
| Specific Rotation | +20.5° - +21.5° |
| Melting point | About 190°C |
| Sulphated ash | Max:0.1% |
| Oxalic Acid | Max:0.2% |
| Impurity C | Max:0.15% |
| Impurity D | Max:0.15% |
| Unspecified Impurity | Max:0.1% |
| Total Impurities | Max:0.2% |
| Methanol | Max:0.3% |
| Particle size(More than 40 mesh) | Max:30% |
| Particle size(Between 40 and 80 mesh) | Min:45% |
| Loss on drying | Max:0.4% |
Microbiological
| Total plate count | Max 1000 cfu/g |
| Total yeasts and moulds | Max 100 cfu/g |
| Escherichia Coli | Not detected |
| Staphylococcus aureus | Not detected |
| Salmonella | Not detected |
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