Propylheptyl caprylate is a chemical compound, the ester resulting from the reaction of propylheptanol with caprylic acid.

The name describes the structure of the molecule:

• "Propylheptyl" indicates an alkyl structure derived from combining a propyl chain and a heptyl chain.
• "Caprylate" refers to an ester of caprylic acid, a medium-chain fatty acid.

Description of raw materials used in production and their functions.

• Caprylic acid. This is a short-chain fatty acid, typically derived from plant sources or through chemical synthesis.
• Propylheptyl alcohol. A fatty alcohol that is used as a reagent to esterify the caprylic acid.
• Catalysts. Materials that speed up the esterification reaction without directly participating.
• Solvents. Used to improve mixing and reaction processing.

Form. Typically an oily liquid.

Color. Ranges from colorless to pale yellow.

Step-by-step summary of industrial chemical synthesis process.

• Preparation of reagents. The caprylic acid and propylheptyl alcohol are purified and readied for reaction.
• Esterification. The caprylic acid and propylheptyl alcohol are mixed together in the presence of a catalyst to form Propylheptyl caprylate.
• Neutralization. Any residual acid is neutralized.
• Purification. The resulting product is purified to remove impurities and undesired substances.

What it is used for and where

Cosmetics

Skin conditioning agent - Emollient. Emollients have the characteristic of enhancing the skin barrier through a source of exogenous lipids that adhere to the skin, improving barrier properties by filling gaps in intercorneocyte clusters to improve hydration while protecting against inflammation. In practice, they have the ability to create a barrier that prevents transepidermal water loss. Emollients are described as degreasing or refreshing additives that improve the lipid content of the upper layers of the skin by preventing degreasing and drying of the skin. The problem with emollients is that many have a strong lipophilic character and are identified as occlusive ingredients; they are oily and fatty materials that remain on the skin surface and reduce transepidermal water loss. In cosmetics, emollients and moisturisers are often considered synonymous with humectants and occlusives.

CAS: 868839-23-0

Commercial Applications

Cosmetics and Skin Care. Propylheptyl caprylate is often employed as an emollient in various cosmetic formulations. It serves to soften and smoothen the skin, giving a pleasant touch feel without a greasy appearance.

Hair Care Products. This ester might be found in hair products to impart shine and softness, reducing frizziness.