The critical micelle concentration (CMC) of sodium lauryl sulfate in pure water at 25 ° C is 8.2 mm and the accumulation number at this concentration is usually about 62.The percentage of micelle ionization (α) is about 0.3 (or 30%). It is used in a wide range of concentrations. According to a 2015 study, 0.01% to 50% is used in cosmetics and 1% to 30% in cleaning products.
Applications - SLS
SLS has many applications, mainly in various detergents. It is a very effective surfactant and is used in any work that requires the removal of greasy and stabilized stains; For instant it is found in high concentrations in industrial products, including car engine cleaners, car floor cleaners, and car wash soaps. At lower concentrations, it is used in toothpaste, shampoo, beard paste. The reason for its use in these fields is its ability to create foam, its surfactant properties and in some applications its volumetric ability.
Industrial applications
Sodium lauryl sulfate is used in an improved method to prepare brain tissue for study under a light microscope. The technique, called CLARITY, was developed by Carl Deirert and colleagues at Stanford University. The process involves injecting organ into acrylamide solution to bind organ macromolecules (proteins, nucleic acids, etc.) and then by thermal polymerization to form a "brain hydrogel" (a mesh across the tissue to stabilize macromolecules and other structures in space) Is. It is then removed with lipids using SLS. Lipid removal to eliminate light scatter with the least protein lost. Along with SLS and Triton X-100, SLS aqueous solutions for dispersion or suspension of nanotubes Along with SLS and Triton X-100, SLS aqueous solutions for dispersion or suspension of nanotubes. Liquid membranes composed of SLS in water are used to separate unusual particles. This device acts as a reverse filter, Which allows large particles to be transported without moving smaller particles. In hydrate formation experiments, SLS is used as a gas hydrate growth enhancer. Researchers use gas hydrates to scale up industrial processes, gas storage and gas separation technologies.