Mountain Rose Herbs

Stearic Acid

Stearic Acid






Derived from


A white, waxy, natural acid found in animal and vegetable fats. Our Stearic acid is from vegetable origins and is manufactured and designed to blend well with your cosmetic recipes. These small pastilles are ideal as an emulsifying agent in creams, lotions, deodorants, and most natural body care. Stearic acid is best known for the “pearly” and “waxy” feel that it adds to your body care products, which ultimately has a cooling effect when applied on the skin.

Stores well under most conditions, with an indefinite shelf life. Stearic acid is successfully used to thicken creams and lotions at about 2-5%.

Typical Analysis

Odor- Waxy
Particle size- 1 mm pastilles
Acid Value- 208.7
Peroxide Value- less than 0.9
Saponification Value- 209
Iodine Value- 0.17
Melting Point- 150 degrees


Popularly used to emulsify, thicken, bind, and stabilize lotions and creams, Stearic Acid has become the number one choice for most body care manufacturers. Stearic Acid occurs naturally in vegetable and animal fats, but has to go through a hydrogenation process to convert it to the end product which is currently bought and sold as the Stearic Acid we have all come to know.

Hydrogenation typically refers to processes through which liquid vegetable oils are converted to solid or semi-solid fats, such as margarine. It refers to a chemical reaction in which “unsaturated” bonds between carbon atoms are “reduced” by attachment of a hydrogen atom to each carbon. The process thus results in the “saturation” of the atoms and, when carried to completion, converts unsaturated fatty acids to saturated ones. The end result is a white, waxy, natural fatty acid. It is fairly insoluble in water but can become somewhat soluble in alcohol.

For educational purposes only. This information has not been evaluated by the Food and Drug Administration. This information is not intended to diagnose, treat, cure, or prevent any disease.