Bulk supply high purity vitamin e alpha tocopherol powder
Product Description
Tocopheryl acetate, also known as vitamin E acetate, is a common vitamin supplement with the molecular formula C31H52O3(for 'α' form). It is the ester of acetic acid and tocopherol(vitamin E). It is often used in dermatologicalproducts such as skin creams. Tocopheryl acetate is not oxidized and can penetrate through the skin to the living cells, where about 5% is converted to free tocopherol and provides beneficial antioxidant effects.
Tocopheryl acetate is used as an alternative to tocopherol itself because the phenolichydroxyl group is blocked, providing a less acidic product with a longer shelf life. It is believed that the acetate is slowly hydrolyzedonce it is absorbed into the skin, regenerating tocopherol and providing protection against the sun's ultraviolet rays.
ITEM | SPECIFICATIONS | RESULTS |
Appearance | White to almost white powder | Qualified |
Assay by G.C | 98.0—102.0% | 98.8% |
Identity | Corresponds | Qualified |
Infrared spectrum | Meets EP requirement | Qualified |
Option rotation | -0.01°~ +0.01° | Qualified |
Density(20°C) | 0.952—0.966g/ml | 0.955g/ml |
Refractive index(20°C) | 1.494—1.498 | 1.496 |
Related substances | Impurities A, C: for each impurity ≤ 0.5% Impurity B ≤ 1.5% Sum of impurity D+E ≤ 1.0% Any other impurities: Meet EP requirements Total impurities: ≤ 2.5% | Qualified |
| Absorbance in ethanol: At about 284nm (max) At about 254nm (min) |
42.0—45.0 7.5—9.0 |
44.0 8.8 |
Acidity | Max.1.0ml of 0.1 N NaOH | 0.04 ml |
Sulphated ashes | ≤0.1% | 0.03% |
Heavy metals | ≤10ppm | <5ppm |
Lead | ≤2ppm | 0.04ppm |
Arsenic | ≤3ppm | <1ppm |
Free tocopheryl | ≤1.0% | 0.35% |
Organic volatile impurities | Meets USP requirements | Qualified |
Conclusion: The product complies with USP/BP/EP/FCC standard | ||
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Product Categories : Vitamins & Amino Acids > Feed Additives
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