Vitamin E CAS 59-02-9

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Appearance: Golden or pale yellow oily substance

Vitamin E CAS 59-02-9

Description of Vitamin E

α-Tocopherol is a type of tocopherol or vitamin E. It has E number “E307”.
α-Tocopherol is a form of vitamin E that is preferentially absorbed and accumulated in humans. The measurement of “vitamin E” activity in international units (IU) was based on fertility enhancement by the prevention of spontaneous abortions in pregnant rats relative to alpha-tocopherol.
There are three stereocenters in alpha-tocopherol, so this is a chiral molecule. The eight stereoisomers of alpha-tocopherol differ in the arrangement of groups around these stereocenters. In the image of RRR-alpha-tocopherol, all three stereocenters are in the R form. However, if the middle of the three stereocenters were changed (so the hydrogen was now pointing down and the methyl group pointing up), this would become the structure of RSR-alpha-tocopherol. RSR-alpha-tocopherol and RRR-alpha-tocopherol are diastereomers of each other. These stereoisomers can also be named in an alternative older nomenclature, where the stereocenters are either in the d or l form.
1 IU of tocopherol is defined as ⅔ milligrams of RRR-alpha-tocopherol (formerly named d-alpha-tocopherol or sometimes ddd-alpha-tocopherol). 1 IU is also defined as 1 milligram of an equal mix of the eight stereoisomers, which is a racemic mixture called all-rac-alpha-tocopheryl acetate. This mix of stereoisomers is often called dl-alpha-tocopheryl acetate, even though it is more precisely dl,dl,dl-alpha-tocopheryl acetate). However, 1 IU of this racemic mixture is not now considered equivalent to 1 IU of natural (RRR) α-tocopherol, and the Institute of Medicine and the USDA now convert IU’s of the racemic mixture to milligrams of equivalent RRR using 1 IU racemic mixture = 0.45 “milligrams α-tocopherol”.

Basic Info of Vitamin E

Chemical Name



(+)-alpha-tocopherol;(+)-α-Tocopherol;D-α-Tocopherol;2H-1-Benzopyran-6-ol, 3,4-dihydro-2,5,7,8-tetramethyl-2-(4,8,12-trimethyltridecyl)-, [2R-[2R*(4R*,8R*)]]-;



Molecular Formula


Molecular Weight






Safety Info



Safety Statements


HS Code


WGK Germany


Risk Statements


Hazard Codes





Appearance & Physical State

light yellow liquid



Boiling Point

200-220ºC (0.07501 mmHg)

Melting Point


Flash Point


Refractive Index

n20/D 1.505(lit.)


Stable. Combustible. May be sensitive to light and air. Incompatible with strong oxidizing agents.

Storage Condition


Vapor Pressure

4.59E-10mmHg at 25°C

Appearance & Physical State

light yellow liquid



Boiling Point

200-220ºC (0.07501 mmHg)

Numbering system

MDL number


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What is Vitamin E?

With the progress of science and technology and the development of society, chemical products have invariably permeated our daily lives, in medicine, food, cosmetics, electronics, industry, and other areas, becoming an essential part of our lives. One such product isVitamin E which has developed particularly rapidly in recent years. Do you know aboutVitamin E?


The official answer: Vitamin E, also known as vitamin E, is also known as tocopherol or tocopherol.

What’s the application of Vitamin E?

For the prevention of miscarriage, habitual miscarriage and pre-eclampsia due to vitamin E deficiency, also for the treatment of infertility and nutritional macrocytic anaemia in infants


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