CAS NO. :50-81-7
EINECS NO.: 200-066-2
Synonyms:Vitamin C
Chemical formulate:C6H8O6
Vitamin C is a water-soluble vitamin, chemically named L - (+) - threitol 2,3,4,5,6-pentahydroxy-2-hexene-4-lactone, also known as L-ascorbic acid, with a molecular formula of C6H8O6 and a molecular weight of 176.12.
Vitamin C is usually a sheet-like, sometimes needle shaped monoclinic crystal, odorless, sour in taste, easily soluble in water, and has strong reducibility. Participating in the complex metabolic processes of the body can promote growth and enhance resistance to diseases. It can be used as a nutritional supplement, antioxidant, and wheat flour improver. However, excessive supplementation of vitamin C is not beneficial to health, but rather harmful, so it needs to be used reasonably. Vitamin C is used as an analytical reagent in the laboratory, such as a reducing agent, masking agent, etc.
Synthetic medicinal vitamin C is exactly the same as natural vitamin C. The product can promote folic acid to tetrahydrofolic acid, is conducive to nucleic acid synthesis, promote the production of red blood cells. It can also reduce trivalent iron ions to bivalent iron ions, which is easy to be absorbed by the body and is also beneficial to the generation of cells. Vitamin C is involved in the production of collagen in the body. It has the function of neutralizing toxin and promoting antibody production
Packing: 25kg carton or 25kgs fibre drum
TESTS |
STANDARD |
RESULTS |
Appearance |
White or almost white crystals or crystalline powder |
|
Identification |
positive |
positive |
Clarity of solution |
clear |
clear |
color of solution |
≤BY7 |
<BY7 |
melting point |
about 190°C |
190.7℃ |
assay |
99.0-100% |
99.76% |
PH (5% solution) |
2.1-2.6 |
2.36 |
loss on drying |
0.4% max |
less than 0.4% |
Sulphate ash ( residue on ignition) |
0.1% max |
less than 0.1% |
specific optical rotation |
+20.5°~+21.5° |
+21.05° |
Heavy metals |
3ppm max |
less than 3pm |
Oxalic acid |
0.2% max |
less than 0.2% |
copper |
5ppm max |
less than 5ppm |
iron |
2ppm max |
less than 2ppm |
organic volatile impurities |
pass |
pass |
cadmium |
1ppm max |
less than 1ppm |
arsenic |
1ppm max |
less than 1ppm |
lead |
2ppm max |
less than 2ppm |
mercury |
1ppm max |
less than 0.1 ppm |
Total plate count |
1000 cfu/g max |
less than 1000 cfu/g |
Related substances
|
impurity C:0.15% max |
less than 0.15% |
impurity D:0.15% max |
less than 0.15% |
|
other unspecified impurities:0.1% max |
less than 0.1% |
|
total impurities :0.2% max |
less than 0.2% |