Overview
Sodium Lauryl Sulfate (SLS) is a widely used anionic surfactant known for its strong cleaning and foaming properties. It is derived from coconut or palm oil and is a key ingredient in many personal care and industrial cleaning products. SLS is valued for its ability to reduce surface tension, making it effective in removing oils and dirt. In addition to its cleaning capabilities, SLS is used in research laboratories as a protein denaturing agent. Its versatility and cost-effectiveness have made it a staple in formulations ranging from household cleaners to cosmetic products like shampoos and toothpaste.
Physical and Chemical Properties
Sodium Lauryl Sulfate appears as a white to off-white powder or crystalline solid with a molecular weight of 288.38 g/mol. It has a density of approximately 1.01 g/cm³ and a melting point between 204-207°C. The compound is highly soluble in water, forming a clear to slightly hazy solution. SLS is a strong surfactant, meaning it significantly reduces surface tension in aqueous solutions. This property enables it to act as an effective emulsifier and foaming agent. Its chemical stability under normal storage conditions makes it suitable for long-term use in various formulations.
Main Applications
The primary use of Sodium Lauryl Sulfate is in the production of detergents and cleaning agents. It is a common ingredient in household and industrial cleaners due to its ability to break down grease and dirt. In personal care products, SLS is found in shampoos, toothpastes, and body washes for its foaming and cleansing properties. Beyond cleaning applications, SLS is used in scientific research as a denaturing agent for proteins. It is also employed in the textile industry as a wetting agent and in the pharmaceutical industry for drug formulation. Its broad applicability stems from its effectiveness and relatively low cost.
Safety and Storage
While Sodium Lauryl Sulfate is generally safe for use in regulated concentrations, it can cause skin and eye irritation upon direct contact. Proper handling, including the use of gloves and eye protection, is recommended to minimize exposure. Inhalation of dust should be avoided to prevent respiratory irritation. Storage of SLS requires a cool, dry environment away from moisture and incompatible substances such as strong oxidizers. Properly sealed containers are essential to maintain product integrity. Shelf life is typically several years when stored under recommended conditions.
B2B Procurement Guide
When procuring Sodium Lauryl Sulfate for industrial or commercial use, buyers should prioritize purity levels, which typically range from 90% to 99%. High-purity grades are essential for applications in cosmetics and pharmaceuticals. Supplier certifications, such as ISO or GMP compliance, should be verified to ensure quality standards. Bulk purchasing often offers cost advantages, with prices ranging approximately $1.50-$3.00 per kg depending on quantity and purity. Packaging options include 25 kg bags, drums, or custom quantities. Buyers should also consider logistics, such as storage requirements and transportation conditions, to maintain product quality during transit.
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