Vitamin C (Ascorbic Acid)
Vitamins · CAS 50-81-7
CAS No.
50-81-7
Form
White Powder
Description
CAS No.: 50-81-7 Vitamin C is a white monoclinic crystal or crystalline powder with melting point on 190 ℃ -192 ℃, no smell, sour, yellowish color after long time standing. The product is easily soluble in water, slightly soluble in ethanol, insoluble in ether, chloroform. The aqueous solution is acidic. 5% (W / V) aqueous solution PH2.1-2.6 (W / V), the rotation of aqueous solution is +20.5 ° ~ +21.5°. Applications: 99.0%-100.5%
Specifications
| Item | Standard |
|---|---|
| Assay | 99.0%-100.5% |
| Melting point | about 190℃ |
| PH value | 2.1-2.6 |
| Clarity of solution | Clear |
| Color of solution | BY7 max. |
| Copper | 5ppm max. |
| Heavy metals | 10ppm max. |
| Mercury | 1mg/kg max. |
| Lead | 2mg/kg max. |
| Arsenic | 3ppm max. |
| Iron | 2ppm max. |
