Sodium Octyl Sulfate (CAS 142-31-4) is a chemical compound that has garnered significant attention in various research and analytical fields due to its distinctive properties as an anionic surfactant and ion-pairing reagent. Its well-defined chemical structure and high purity make it a valuable tool for scientists investigating a range of phenomena and developing new analytical methods.

As a surfactant, Sodium Octyl Sulfate exhibits excellent emulsifying and wetting capabilities. These properties are leveraged in diverse laboratory applications, from facilitating the dispersion of insoluble substances to aiding in the formulation of stable solutions. In analytical chemistry, particularly in High-Performance Liquid Chromatography (HPLC), it is employed as a mobile phase additive. Its presence can modify the retention behavior of analytes by forming ion pairs, which allows for improved separation of complex mixtures. This application is crucial for obtaining accurate and reproducible analytical results in fields such as environmental monitoring, quality control, and pharmaceutical analysis.

The role of Sodium Octyl Sulfate as an ion-pairing reagent is particularly noteworthy. By forming neutral ion pairs with charged molecules, it can alter their polarity and chromatographic behavior, enabling the separation of compounds that might otherwise co-elute. This technique is invaluable for analyzing charged species, including peptides and small organic molecules, where precise separation is critical.

Furthermore, research has explored its impact on biological systems, such as its ability to alter protein structures or affect membrane permeability. These investigations, while primarily academic, shed light on the fundamental interactions of surfactants at a molecular level, potentially paving the way for novel applications in biomaterials and drug delivery systems.

For researchers and analytical chemists, obtaining Sodium Octyl Sulfate of sufficient purity is essential. High-purity grades ensure that the observed effects are attributable to the intended compound and not to confounding impurities. The consistent quality of this chemical reagent is fundamental to the reliability and validity of experimental outcomes.