China High Quality Hexyl Propionate Supplier - Vitamin D2 | 50-14-6 – COLORKEM
China High Quality Hexyl Propionate Supplier - Vitamin D2 | 50-14-6 – COLORKEM Detail:
Products Description
Vitamin D (VD for short) is a fat-soluble vitamin. The most important ones are vitamin D3 and D2. Vitamin D3 is formed by ultraviolet radiation of 7-dehydrocholesterol in the human skin, and vitamin D2 is formed by ultraviolet radiation of ergosterol contained in plants or yeast. The main function of vitamin D is to promote the absorption of calcium and phosphorus by the small intestinal mucosal cells, so it can increase the blood calcium and phosphorus concentration, which is conducive to new bone formation and calcification.
Specification
| ITEMS | SPECIFICATION |
| Appearance | Meet the requirement |
| Identification | Meet the requirement |
| Examination | Dissolve 10mg of vitamin D2 into 2ml of 90% ethanol, add 2ml solution of digitalis saponin and incubate for 18 hours. No precipitation or cloud should be observed. |
| Melting Range | 115 ~ 119°C |
| Specific Rotation | +103°~+106 |
| Solubility | Freely soluble in alcohol |
| Reducing Substances | Max 20ppm |
| Ergosterol | none |
| Organic Volatility Impurities | Corresponding using method IV(467) |
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We are ready to share our knowledge of marketing worldwide and recommend you suitable products at most aggressive costs. So Profi Tools offer you finest benefit of money and we are ready to produce alongside one another with China High Quality Hexyl Propionate Supplier - Vitamin D2 | 50-14-6 – COLORKEM , The product will supply to all over the world, such as: Angola, Macedonia, Houston, We warmly welcome your patronage and will serve our clients both at home and abroad with products and solutions of superior quality and excellent service geared to the trend of further development as always. We believe you will benefit from our professionalism soon.
By Hellyngton Sato from Southampton - 2018.09.19 18:37
This enterprise in the industry is strong and competitive, advancing with the times and develop sustainable, we are very pleased to have a opportunity to cooperate!
By Bernice from Czech - 2017.02.28 14:19
