For product formulators, the selection of high-quality chemical intermediates is the bedrock of successful product development. Silanol-terminated polydimethylsiloxane (PDMS), bearing the CAS number 70131-67-8, is a chemical compound that consistently proves its value across a spectrum of industries. Characterized by its terminal hydroxyl (-OH) groups, this silicone fluid is prized for its reactivity and versatile application profile, ranging from advanced material synthesis to everyday consumer products. As a dedicated manufacturer and supplier, NINGBO INNO PHARMCHEM CO.,LTD. aims to empower formulators with essential insights into this critical ingredient.

The chemical structure of silanol-terminated PDMS, HO-[Si(CH3)2O]n-H, dictates its primary functions. The presence of silanol groups at the polymer chain ends makes it highly amenable to condensation cure mechanisms. This is why it serves as the foundational polymer for many RTV (Room Temperature Vulcanizing) silicone sealants. Formulators rely on this material to create sealants that cure efficiently upon exposure to atmospheric moisture, forming robust, flexible, and durable bonds. Understanding the precise viscosity and hydroxyl content is crucial; for instance, a fluid with a hydroxyl content of 9.0% Min and a viscosity of 20-30 mm²/s at 25°C offers predictable reactivity and processing characteristics vital for consistent sealant performance.

Beyond the realm of adhesives and sealants, silanol-terminated PDMS extends its utility into diverse applications. In the textile and leather industries, it functions as an effective treatment agent, imparting desirable properties such as water repellency, enhanced softness, and improved hand-feel. Formulators seeking to create premium finishes for fabrics and leather goods will find this silicone fluid to be a valuable component. Furthermore, its properties are highly sought after in the cosmetics and personal care industry. As a surfactant and conditioning agent, it contributes to the luxurious texture and performance of hair care products, skin creams, and other beauty formulations. The ability to buy this material in bulk from a reliable supplier like us ensures consistent quality for these sensitive applications.

Formulators looking to source silanol-terminated PDMS should prioritize suppliers who can offer not only competitive pricing but also detailed technical documentation and consistent product quality. Direct engagement with manufacturers can streamline the purchasing process, providing direct access to technical support and ensuring that the material meets exact specifications. Whether the goal is to develop a new generation of silicone sealants, high-performance textile finishes, or innovative cosmetic products, understanding the properties and sourcing strategies for silanol-terminated polydimethylsiloxane is key. By partnering with NINGBO INNO PHARMCHEM CO.,LTD., formulators gain access to a dependable supply of this essential chemical, backed by our commitment to quality and customer satisfaction.