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Coated Ascorbic acid 97%
CAS No.: 50-81-7
Molecular Formula: C6H8O6 Molecular Weight: 176.13
Structural Formula:
Application:
The melting point of Vitamin C is 190-192ºC, the Alpha is 20.5 º (c=10,H2O) and the water solubility is 333 g/L (20 ºC).
Vitamin C behaves as a vinylogous carboxylic acid where the electrons in the double bond (vinyl), hydroxyl group lone pair and the carbonyl double bond form a conjugated system. Because the two major resonance structures stabilize the deprotonated conjugate base of Vitamin C, the hydroxyl group in Vitamin C is much more acidic than typical hydroxyl groups. In other words, Vitamin C can be considered an enol where the deprotonated form is an enolate, which is usually strongly basic.
Specification:
| Item | Index |
| Characteristics | White crystalline powder |
| Identification | Positive reaction |
| Melting Point | About 190℃ |
| PH | 2.1-2.6 |
| Clarity Of Solution | Clear |
| Mercury | ≤0.1ppm |
| Zinc | ≤25ppm |
| Arsenic | ≤3ppm |
| Lead | ≤2ppm |
| Loss on Drying | ≤0.1% |
| Colour of Solution | ≤BY7 |
| Copper | ≤5ppm |
| Heavy Metals | ≤10ppm |
| Iron | ≤2ppm |
| Oxalic Acid | ≤0.2 % |
| Sulphate Ash (Residue On Ignition) | ≤0.1% |
| Specific Optical Rotation | +20.5°- +21.5° |
| Assay | 99.0-100.5% |
| Organic Volatile Impurities | Pass |
Usage:
Vitamin C takes part in a variety of metabolic processes in human body and helps in inducing the fragility of capillary vessel, and improving the resistibility to illness.
Packing and Storage:
Vitamin C is packed in 25KG net weight carton lined with PE bags(marks can be designed by customers). Store Vitamin C in cool, dry and well closed place. The shelf life of Vitamin C is 2 years in original packages under the described conditions.
Keyword:
Vitamin C; L-Threo-2,3,4,5,6-Pentahydroxy-1-Hexenoic Acid-4-Lactone