nátriumlaurilszulfát

Nátriumlaurilszulfát, commonly abbreviated as SLS, is an anionic surfactant with the chemical formula CH3(CH2)11OSO3Na. It is a mixture of sodium alkyl sulfates with a predominance of the lauryl sulfate component. SLS is produced by the sulfation of lauryl alcohol followed by neutralization with sodium carbonate or sodium hydroxide.

Its primary function is as a cleansing and foaming agent. SLS is widely used in personal care products such as toothpastes, shampoos, body washes, and soaps due to its ability to lower surface tension, allowing liquids to spread more easily and mix with oil and dirt to be washed away. It is also found in household cleaning products like detergents and surface cleaners. In industrial applications, it can be used as a wetting agent, emulsifier, and dispersant.

While effective, SLS can cause skin and eye irritation in some individuals, particularly with prolonged exposure or at higher concentrations. This irritant potential has led to some consumer concern and a search for alternative surfactants in certain product formulations. Regulatory bodies generally consider SLS safe for use in cosmetic and household products within established concentration limits. Its biodegradability is also a factor in its widespread use.