Chemical compounds often possess a unique set of properties that dictate their utility across various industries. Octadecyltrimethylammonium Bromide (CAS 1120-02-1) is a prime example, a cationic surfactant whose distinct chemical characteristics make it invaluable in sectors ranging from personal care to advanced material science. As a leading supplier of this versatile chemical, we aim to provide a deeper understanding of its properties and applications to empower your product development efforts.

At its core, Octadecyltrimethylammonium Bromide is a quaternary ammonium salt, characterized by a central nitrogen atom bonded to four organic groups: three methyl groups and one long-chain octadecyl (C18) group, with bromide as the counterion. This structure endows it with amphiphilic properties: the long hydrocarbon tail is hydrophobic, while the positively charged trimethylammonium head is hydrophilic. This dual nature is fundamental to its function as a surfactant, enabling it to reduce surface tension and stabilize emulsions.

Chemically, it typically presents as a white to off-white solid. Its melting point is around 250°C (with decomposition), indicating good thermal stability for many processing applications. Solubility is another key property; it is readily soluble in water and alcohols, which is crucial for its use in aqueous formulations. The purity of Octadecyltrimethylammonium Bromide, often supplied at ≥99%, is critical for consistent performance, particularly in sensitive applications where impurities could negatively impact product quality or safety.

The diverse applications of CAS 1120-02-1 stem directly from these properties. In personal care, its cationic head group provides excellent conditioning and antistatic effects on hair and skin. In textiles, it acts as a fabric softener by adsorbing onto fiber surfaces. Its ability to disrupt microbial cell membranes makes it an effective biocide in water treatment and disinfectant formulations. Furthermore, its capacity to form micelles and interact with hydrophobic substances makes it useful in areas like chromatography as a stationary phase modifier and in organic synthesis as a phase transfer catalyst.

Understanding these chemical properties allows formulators and researchers to harness the full potential of Octadecyltrimethylammonium Bromide. As a reliable supplier, we ensure you have access to this high-quality chemical, supported by thorough technical data. We encourage you to buy this versatile compound from us and leverage its unique attributes to drive innovation in your respective fields.