How D-Alpha Tocopheryl Acetate Is Used in Formulations

Two ingredients can both be sold as “vitamin E” and behave differently in a formula. D-alpha tocopheryl acetate is an oil-soluble form often used in softgel fills and other oil-based products. If you are choosing a grade, start with three questions: What form of vitamin E is it, how much activity does it provide per gram, and will it disperse in your formula?

What Is D-Alpha Tocopheryl Acetate?

D-alpha tocopheryl acetate (CAS 58-95-7), also called RRR-alpha-tocopheryl acetate, is the acetate ester of natural-source D-alpha tocopherol. The Food Chemicals Codex monograph describes it as a clear, colorless to yellow viscous oil that does not dissolve in water.

The acetate form is more resistant to oxidation during storage than free alpha-tocopherol. When used as an oral vitamin E ingredient, the ester is hydrolyzed to release alpha-tocopherol, as explained in the NIH Office of Dietary Supplements fact sheet.

Where Is It Used?

Dietary Supplements

• Softgel fills: The oil form can be incorporated into an oil-based fill. Use the raw material’s stated potency to calculate the amount required for the finished product.

• Tablets and dry blends: If your process calls for a powder, look for a preparation designed for dry blending. Check what the carrier contains and which vitamin E form the preparation supplies.

Fortified Foods

• Oil-based premixes: An oil grade can be evaluated as a vitamin E source when the recipe contains an oil phase. Check the grade documentation for the intended market and use.

• Dry mixes and drinks: For a cereal premix or instant beverage, a formulated powder may be easier to distribute. If the product will be reconstituted in water, check how the ingredient disperses in the finished mix.

Cosmetics and Personal Care

• Creams, lotions and oils: Tocopheryl acetate is used as a skin-conditioning ingredient. For an emulsion, evaluate it in the oil phase and check the finished product for stability.

• Formula protection: If the goal is to slow rancidity in a product’s oils, evaluate an antioxidant system for that purpose. The storage stability of tocopheryl acetate does not mean it can replace free tocopherols as an oil antioxidant.

What to Check When Comparing Grades

For oil-grade sourcing, see Aozun’s D-Alpha Tocopheryl Acetate product page. If you are comparing it with Natural Vitamin E Dry Powder, check the active ingredient and assay. The powder page reports total tocopherols, which is a different measure from acetate content or activity per gram.

Frequently Asked Questions

Is D-alpha tocopheryl acetate the same as D-alpha tocopherol?

D-alpha tocopherol is the free form. D-alpha tocopheryl acetate is its acetate ester. Check the form on the specification when replacing one ingredient with another.

Are D-alpha and DL-alpha tocopheryl acetate interchangeable by weight?

They have different stereochemical compositions and vitamin E activity. Compare the declared potency and calculate the amount from the specification for the grade you select.

Can I add the oil directly to a water-based product?

The oil does not dissolve in water. Evaluate a suitable emulsion or a dispersible preparation and check for separation in the finished product.

Contact Aozun

For a quote or specification, tell us your application, preferred form, target potency, quantity and destination. Ask for the technical data sheet and COA for the grade you are considering.

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