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Member Since 12 Years
Nature of Business Supplier Year of Establishment 1992Ask for more detail from the seller
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BP USP Ascorbic Acid Details
Ascorbic acid vitamin c food grade is a white or slightly yellow crystals or powder,a little acid.m.p.190°C-192°C,easily soluble in water,a little soluble in alcohol and uneasily soluble in Ether and chlorofom and other organic solvent.In solid state it is stable in air.Its water solution is easliy mutated when it meets with air.
BP USP Ascorbic Acid Specifications
| ITEMS | STANDARD |
| Appearance | White or almost white crystal or crystalline powder |
| Identification | Positive |
| Melting point | 191 °C ~ 192°C |
| pH (5%, w/v) | 2.2 ~ 2.5 |
| pH (2%,w/v) | 2.4 ~ 2.8 |
| Specific optical rotation | +20.5° ~ +21.5° |
| Clarity of solution | Clear |
| Heavy metals | ≤0.0003% |
| Assay (as C 6H 8O6, %) | 99.0 ~ 100.5 |
| Copper | ≤3 mg/kg |
| Iron | ≤2 mg/kg |
| Mercury | ≤1 mg/kg |
| Arsenic | ≤2 mg/kg |
| Lead | ≤2 mg/kg |
| Oxalic acid | ≤0.2% |
| Loss on drying | ≤0.1% |
| Sulphated ash | ≤ 0.1% |
| Residual solvents (as methanol) | ≤ 500 mg/kg |
| Total plate count (cfu/g) | ≤ 1000 |
| Yeasts & molds (cfu/g) | ≤ 100 |
| Escherichia. Coli/g | Absence |
| Salmonella/ 25g | Absence |
| Staphylococcus aureus/ 25g | Absence |
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