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
