Sodium Lauryl Sulfate
Sodium Lauryl Sulfate (SLS), CAS 151-21-3, is an anionic surfactant widely used for its excellent foaming and cleaning properties in various industrial and consumer products.
Description
Sodium Lauryl Sulfate (SLS), with the chemical formula C12H25NaO4S, is a common anionic surfactant. It is the sodium salt of lauryl sulfate, a dodecyl alcohol derivative. SLS is synthesized through the sulfation of lauryl alcohol, followed by neutralization with sodium carbonate. This process yields a highly effective surfactant known for its exceptional detergency, emulsification, and foaming capabilities. The molecule consists of a 12-carbon fatty chain responsible for its lipophilic properties and a sulfate group with a sodium counter-ion, providing its hydrophilic and anionic characteristics. This amphiphilic structure enables SLS to reduce surface tension effectively, allowing for the dispersion of oils and greases in water. Its critical micelle concentration (CMC) is relatively low, leading to efficient micelle formation necessary for optimal cleaning action. SLS is available in various forms, including powder, pellets, and aqueous solutions, tailored for specific industrial applications. It is a workhorse ingredient across a multitude of sectors due to its cost-effectiveness and performance attributes.
Applications
Sodium Lauryl Sulfate finds extensive use across numerous industries. In personal care, it is a primary ingredient in shampoos, body washes, and toothpaste due to its strong foaming and cleansing properties. The detergent industry employs SLS in laundry detergents, dishwashing liquids, and household cleaners for its ability to emulsify oils and lift dirt effectively. It also serves as a wetting agent, emulsifier, and dispersant in industrial cleaning formulations. In pharmaceuticals, it acts as a tableting aid and solubilizer. The textile industry utilizes SLS as a dyeing assistant and scouring agent. Furthermore, it is used in the manufacturing of latex products, specialized lubricants, and in certain agricultural formulations as a wetting and dispersing agent, enhancing the efficacy of pesticides and herbicides.
Storage & Handling
Store in a cool, dry, well-ventilated area away from incompatible materials. Keep containers tightly closed. Avoid inhalation of dust/vapors and contact with skin and eyes. Wear appropriate personal protective equipment during handling. Maintain good industrial hygiene practices.
Warning
- H319 Causes serious eye irritation
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