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Sodium stearate is safe for use in foods for newborns, children and pregnant women. It is considered GRAS, a safe designation granted by the FDA and given to a food additive that meets the most rigorous safety standards.
Typically available as a white powder or wax, sodium stearate is derived from the esterification of stearic acid with sodium hydroxide. It is a versatile compound used in soaps, lubricants, cosmetics and food products as an emulsifier, thickener and stabilizer.
Stearic acid is a type of fatty acid that comes from the saponification of animal fats (tallow and lard). It has a polar end and a long non-polar carbon chain.
The molecule is highly water-soluble, which makes it ideal for thickening and stabilizing solutions in many applications. It is also used as an emulsifier for oily liquids.
It can also be dissolved in solvents such as ethanol, which has the highest stearic acid solubility of any organic solvent. It is also an ingredient in some skin cleansers, as a mild surfactant that helps remove dirt and oil from the skin.
Sodium stearate is an excellent choice for the formulation of many cosmetic and personal care products. It is also a common ingredient in food packaging, as a binder and an anti-caking agent.