What is Ascorbyl Tetraisopalmitate CAS 183476-82-6?

Ascorbyl Tetraisopalmitate is an oil-soluble vitamin C ester with CAS 183476-82-6, EINECS 430-110-8 and molecular formula C₇₀H₁₂₈O₁₀. It is normally supplied as a clear to pale yellow viscous liquid and is widely used as a stable antioxidant and skin-brightening active in cosmetics.

Are Ascorbyl Tetraisopalmitate, Tetrahexyldecyl Ascorbate and VC-IP the same ingredient?

They are commonly used names for the same cosmetic active. Ascorbyl Tetraisopalmitate is the INCI name; VC-IP and Tetrahexyldecyl Ascorbate are widely used trade or synonym names, and some suppliers may list more than one CAS number for this material.

How is Ascorbyl Tetraisopalmitate different from Ascorbic Acid?

Ascorbic acid is water-soluble and can be unstable and irritating in some formulas, while Ascorbyl Tetraisopalmitate is a lipophilic ester with improved stability, skin affinity and compatibility with oil phases. It is designed to convert to vitamin C after skin delivery while avoiding many handling limitations of free ascorbic acid.

What is the recommended use level and pH range for Ascorbyl Tetraisopalmitate in cosmetics?

Typical use levels are about 0.1-2.0%, depending on the product type and desired performance. It should normally be added to the oil phase, and the formulation pH should generally stay at or below about 6.0 to maintain stability and activity.

What should be checked when selecting Ascorbyl Tetraisopalmitate for a cosmetic formula?

Check assay, appearance, color, free ascorbic acid, residual solvents and ester distribution, especially for high-end skin-care applications. Store the material tightly closed in a cool, dry place away from direct sunlight, heat and strong oxidizers, and avoid prolonged heating during formulation.

Ascorbyl Tetraisopalmitate CAS 183476-82-6

Ascorbyl Tetraisopalmitate (VC-IP, Tetrahexyldecyl Ascorbate), CAS 183476-82-6, is an oil-soluble vitamin C ester used as a stable antioxidant and skin-brightening active in serums, lotions, creams and other cosmetics. Confirm the required grade, then request a quotation with COA/TDS/SDS for bulk supply.

CAS: 183476-82-6
Synonyms: Tetrahexyldecyl Ascorbate, VC-IP, Ascorbyl tetra-2-hexyldecanoate, Vitamin C tetra-isopalmitate, ATIP
Einecs: 430-110-8
Molecular Formula: C₇₀H₁₂₈O₁₀
Grade: Cosmetic grade
Package: 500g / 1kg

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Product Description

Ascorbyl Tetraisopalmitate, CAS 183476-82-6, is an oil-soluble vitamin C ester with the INCI name Ascorbyl Tetraisopalmitate; the EC/EINECS number is 430-110-8.

Synonyms: Tetrahexyldecyl Ascorbate; VC-IP; Ascorbyl tetra-2-hexyldecanoate; Vitamin C tetra-isopalmitate; ATIP.

CAS: 183476-82-6.

Molecular formula: C₇₀H₁₂₈O₁₀.

Molecular weight: 1129.76.

EC number: 430-110-8.

It is normally supplied as a clear to pale-yellow viscous liquid.

It is lipophilic and is added to the oil phase of formulations.

It is used as a stable antioxidant and skin-brightening active in serums, lotions, creams, mists and sheet masks.

The typical use level is about 0.1-2.0%.

It is more stable and less irritating than free ascorbic acid and is designed to convert to vitamin C after skin delivery.

The formulation pH should generally stay at or below about 6.0 to maintain stability and activity.

Adding a chelating agent and an antioxidant such as tocopherol can further improve stability; avoid prolonged heating.

Confirm assay, appearance, color, free ascorbic acid, residual solvents and ester distribution.

Store tightly closed in a cool, dry place away from direct sunlight, heat and strong oxidizers.

Confirm the current product-specific specification.

Confirm packaging with the requested quantity and destination requirements.

Document requirements should be confirmed from the current specification, SDS, COA, or other product-specific files.

The page is an RFQ entry point and does not state stock, price, MOQ, or fixed lead time.

For an RFQ, state the intended use, required specification, quantity, packaging, destination, and document needs.

FAQ - Technical & Supply Chain

Q:
What is Ascorbyl Tetraisopalmitate CAS 183476-82-6?

A: Ascorbyl Tetraisopalmitate is an oil-soluble vitamin C ester with CAS 183476-82-6, EINECS 430-110-8 and molecular formula C₇₀H₁₂₈O₁₀. It is normally supplied as a clear to pale yellow viscous liquid and is widely used as a stable antioxidant and skin-brightening active in cosmetics.
Q:
Are Ascorbyl Tetraisopalmitate, Tetrahexyldecyl Ascorbate and VC-IP the same ingredient?

A: They are commonly used names for the same cosmetic active. Ascorbyl Tetraisopalmitate is the INCI name; VC-IP and Tetrahexyldecyl Ascorbate are widely used trade or synonym names, and some suppliers may list more than one CAS number for this material.
Q:
How is Ascorbyl Tetraisopalmitate different from Ascorbic Acid?

A: Ascorbic acid is water-soluble and can be unstable and irritating in some formulas, while Ascorbyl Tetraisopalmitate is a lipophilic ester with improved stability, skin affinity and compatibility with oil phases. It is designed to convert to vitamin C after skin delivery while avoiding many handling limitations of free ascorbic acid.
Q:
What is the recommended use level and pH range for Ascorbyl Tetraisopalmitate in cosmetics?

A: Typical use levels are about 0.1-2.0%, depending on the product type and desired performance. It should normally be added to the oil phase, and the formulation pH should generally stay at or below about 6.0 to maintain stability and activity.
Q:
What should be checked when selecting Ascorbyl Tetraisopalmitate for a cosmetic formula?

A: Check assay, appearance, color, free ascorbic acid, residual solvents and ester distribution, especially for high-end skin-care applications. Store the material tightly closed in a cool, dry place away from direct sunlight, heat and strong oxidizers, and avoid prolonged heating during formulation.

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