Cetyl Alchohol

Description

Cetyl alcohol, also known as hexadecan-1-ol or palmityl alcohol, is a C-16 fatty alcohol with the chemical formula CH3​(CH2​)15​OH. At room temperature, it is a waxy white solid or flakes. The name “cetyl” comes from the Latin word “cetus,” meaning whale, as it was first isolated from whale oil.

Chemical & Physical Properties

Key Properties and Functions

Unlike “regular” alcohols like ethanol, cetyl alcohol is a fatty alcohol and does not have a drying effect on the skin. Instead, it is known for its beneficial properties in cosmetics, personal care products, and other applications.

Emulsifier: It helps keep oil and water-based ingredients from separating in products like creams and lotions, creating a stable and smooth texture.

Emollient: It forms a protective, oily layer on the skin’s surface, helping to trap moisture and soften and soothe dry or rough skin.

Thickening Agent: It increases the viscosity of products, making them thicker and more stable. This is why it’s a common ingredient in shampoos, conditioners, and creams.

Opacifier: It can make a product appear opaque, which is often desirable in certain formulations.

Viscosity Controller: It helps to control the consistency of a product, making it easier to apply and spread.

Uses

Cosmetics and Personal Care: It is a key ingredient in many products, including moisturizers, lotions, creams, shampoos, conditioners, sunscreens, and makeup (like lipstick). It provides moisturizing and softening effects, improves product texture, and enhances stability.

Food Industry: The FDA has approved cetyl alcohol as a safe food additive. It can be used as a flavoring agent or in food decorations, such as the colorful lettering on candy.

Industrial Applications: It is used as a lubricant for nuts and bolts, in fuels, and as a component in chemical intermediates and plasticizers. It’s also used in some “liquid pool covers” to reduce water evaporation.