发布日期：2020-09-22 18:09 浏览次数：
Vitamin B-12 is essential for normal formation of blood cells and contributes to the health of the nervous system.Vitamin B-12 is also part of a triad of vitamins - along with Folic Acid and Vitamin B-6 - that support heart health.
Vitamin B12 is the only vitamin that will be absorbed with the help of intestinal secretions (endogenous gene). Vitamin B12 cannot be made by plants or animals as only bacteria have the enzymes required for its synthesis. Being used as a food additive, Vitamin B12 is an essential food ingredient in our food supply.
|
Item |
Standard (USP28) |
Test Result |
|
Appearance |
Red crystals |
Complies |
|
Assay |
98%~101% |
99.31% |
|
Clarity in Hexane |
Clear and red |
Complies |
|
Ordr and taste |
Orderless and tasteless |
Complies |
|
Solubility |
Freely soluble in ethanol isopropanol, |
Complies |
|
Sightly soluble in methanol, insoluble in water |
||
|
Melting point |
|
|
|
Water |
＜0.5% |
0.41% |
|
Residue on ignition |
＜0.2% |
Complies |
|
Loss on drying |
≤2.0% |
0.03% |
|
Heavy metal |
＜10ppm |
Complies |
|
Arsenic |
＜0.5% |
Complies |
|
Identification |
Complies |
Complies |
|
Ethanol&Potassium Hydroxide |
Blue |
Complies |
|
Ethanol&Sodium Hydrosulfite |
Light yellow or red |
Complies |
|
Absorption in isooctane |
300nm~377nm |
345nm |
|
Absorbance Ratio A1/A2 |
0.22~0.38 |
0.23 |
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