Ascorbic Acid
CAS No.: 50-81-7
Product Name: Ascorbic Acid
CAS#50-81-7
Spec: food grade
Package: 25kg/box, 15mt/20`FCL on pallets
Delivery time: in stock for prompt shipment.
Dangerous goods or not: Not
CAS#50-81-7
Spec: food grade
Package: 25kg/box, 15mt/20`FCL on pallets
Delivery time: in stock for prompt shipment.
Dangerous goods or not: Not
Description
Spec of Ascorbic Acid food grade:
| Items | Specification | Results |
| Characteristics | White or almost white crystalline powder or colorless crystals |
White crystalline powder |
| Solubility | Freely soluble in water, sparingly soluble in Alcohol,insoluble in chloroform,ether and benzene |
Complies |
| Identification | Complies | Complies |
| Melting point | 189C~193℃ | Clear |
| pH(5%, W/V) | 2.1~2.6 | 2.36 |
| pH(2%,W/V) | 2.4~2.8 | 2.53 |
| Clarity and color of solution | Solution S is clear and not more intensely coloured than reference solution BY7 | up to standard |
| Assay | 99.0%-100.5% | 99.5% |
| Specific Rotation | +20.5-+21.5° | +20.9° |
| Copper | ≤5ppm | 0.04ppm |
| Iron | ≤2ppm | 0.04ppm |
| Mercury | ≤1ppm | 0. 01ppm |
| Arsenic | ≤3ppm | <3 ppm |
| Lead | ≤2ppm | 0.02ppm |
| Impurity E(Oxalic acid) | ≤0.2% | <0.2% |
| Loss on drying | ≤0.4% | 0.02% |
| Sulphated ash(Residue on ignition) | ≤0.1% | 0.03% |
| Residual Solvents | Methanol≤3000ppm | 50ppm |
| Sieve Test(Pass Rate) | 40 mesh | 76.2% |
| 80 mesh | 37.3% | |
| 100 mesh | 29.2% | |
| Related Substances | Impurity C:≤0.15% | <0.006% |
| Impurity D:≤0.15% | <0.002% | |
| Unspecified Impurities:≤0.10% | ND | |
| Total Impurities:≤0.2% | ND |
