CAS No.: 7695-91-2
Molecular Formula: C31H52O3
Molecular Weight: 472.75
Structural Formula:
Property:
Vitamin E provides antioxidant activity only on the
skin (tissue esterases need first to cleave off acetate to form active
Vitamin E), potent antioxidant of Vitamin E (protects from damages by
reactive oxygen radicals & UV rays), increases SPF, moisturizing and
antiaging effect (improves skin surface relief), soothing and anti-inflammatory
properties, promotes epithelisation and enzyme activity (faster wound
healing).
Specification:
|
Item |
Index
|
| Description |
Clear, colourless, slightly
greenish - yellow, viscous, oily liquid |
Identification
Optical Rotation
Identification
Optical Rotation IR
TLC
Colour Reaction
Retention Time,GC |
-0.01o-+0.01o, EP
To confirm EP/USP/FCC
To confirm EP
To confirm USP/FCC
To confirm USP/FCC |
| Assay |
96.5%-102.0% EP
96.0%-102.0% USP/FCC |
Related Substances
Impurity A
Impurity B
Impurity C
Impurity D and E
Any Other Impurity
Total Impurities |
0.5%max. EP
1.5%max. EP
0.5%max. EP
1.0%max. EP
0.25%max. EP
2.5%max. EP |
| Acidity |
1.0ml max.USP/FCC |
Residual Solvents
Isobutyl Acetate |
0.5% max. In house |
Heavy Metals
Pb |
2mg/kg max.,FCC |
Microbiological Test
Total Aerobic Microbial Couni
Total Yeasts and Moulds Count
Escherichia Coli |
1000cfu/g max. EP/USP
100cfu/g max. EP/USP
n.d./g EP/USP |
Salmonella
Pseudomonas Aeruginosa
Staphylococcus Aureus
Bile-tolerant Gram-Negative Bacterial |
n.d./10g EP/USP
n.d./g EP/USP
n.d./g EP/USP
n.d./g EP/USP |
| Arsenic |
1mg/kg max. in house |
| Copper |
25mg/kg max. in house |
| Zinc |
25mg/kg max. in house |
Package:
Vitamin E is often used in dermatological products such
as skin creams. Some studies have linked tocopheryl acetate to cancer.
Vitamin E is used as an alternative to Tocopherol itself
because the Phenolic Hydroxyl group is blocked, providing a less acidic
product. Vitamin E is believed that the acetate is slowly hydrolyzed
once it is absorbed into the skin, regenerating tocopherol and providing
protection against the sun's ultraviolet rays.
Package and Storage：
Vitamin E is packed in 25KG paper barrel or bag. In
order to prevent from insolation and rain, heat and hitting, Vitamin
E must be overcovered during transportation. Handle carefully and do
not transport it with any harmful and contaminating substances or oxides.
Keyword:
Vitamin E, Acetate, Vitamin E Acetate, Tocopheryl
