Ascorbic Acid
| CAS #: 50-81-7 | |||
| Property | Specification: | ||
|---|---|---|---|
| Characteristics | White crystalline powder | ||
| Identification | Positive reaction | ||
| Melting point | About 190° | ||
| pH | 2.1-2.6 | ||
| Clarity of solution | Pass | ||
| Color of solution | Not more than BY7 | ||
| Copper salt | Not more than 5ppm | ||
| Heavy metals | Not more than 10ppm | ||
| Ferrite | Not more than 2ppm | ||
| Oxalate | Not more than 0.2% | ||
| Residue on Ignition | Not more than 0.1% | ||
| Specific rotation | +20.5° to +21.5° | ||
| Assay | 99.0-100.5% | ||
| Organic volatile impurities | Pass | ||