Octaphenylcyclotetrasiloxane (OPCTS), identified by CAS Number 546-56-5, stands as a highly significant and versatile organic silicon compound in the chemical industry. This compound, also known by its systematic name 2,2,4,4,6,6,8,8-octakis-phenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane, is a cyclic siloxane characterized by its distinctive white crystalline powder appearance. Its unique molecular structure, with a molecular formula of C48H40O4Si4 and a molecular weight of 793.18 g/mol, endows it with exceptional properties crucial for a wide array of high-performance applications.

OPCTS exhibits robust physical and chemical characteristics that make it an indispensable material. It boasts a melting point typically ranging from 196°C to 198°C and a boiling point of approximately 334°C at 760 mmHg, indicating its thermal stability. With a flash point of 200°C and a density of 1.185 g/cm3, it is a stable compound under normal conditions. While being insoluble in water, OPCTS readily dissolves in common organic solvents such as ethanol, chloroform, and toluene, facilitating its integration into various chemical processes. Purity is paramount in its applications, with a typical assay of ≥98% ensuring consistent performance and reliability.

The primary utility of Octaphenylcyclotetrasiloxane lies in its role as a critical intermediate for diverse synthetic processes. In the pharmaceutical sector, OPCTS serves as a foundational building block for the synthesis of complex pharmaceutical intermediates, contributing to the development of novel drugs and therapies. Its unique chemical reactivity allows for the creation of intricate molecular structures vital for advanced medicinal compounds. Concurrently, in the organic silicone industry, OPCTS is a key precursor for the production of sophisticated organic silicone intermediates. These intermediates are essential for manufacturing high-temperature resistant phenyl silicone oil and other high-performance polymer compounds, which are critical in applications demanding exceptional thermal stability and durability.

Beyond its intermediate applications, OPCTS finds significant use in specialized material formulations. For instance, it is incorporated into antifouling coatings, where its presence helps to reduce the surface energy of the coatings, thereby enhancing their resistance to biological adhesion. Furthermore, it improves the flexibility of the film and helps in decreasing the formation of bubbles during the coating process, leading to smoother and more effective finishes. In the realm of advanced electronics, particularly LED encapsulation, OPCTS is crucial. When combined with vinyl silicone oil, it facilitates the synthesis of phenyl vinyl silicone oil, a material that significantly increases the viscosity, refractive index, and heat stability of the final product, which are all vital attributes for high-performance LED applications.

The synthesis of Octaphenylcyclotetrasiloxane typically involves the hydrolysis of diphenyldichlorosilane or diphenyldialkoxysilanes, showcasing established industrial production methods. For optimal quality and longevity, OPCTS should be stored in a dry, cool, and well-ventilated area, away from direct contact with acids, alkalis, and water. When stored in its original, strictly sealed containers, it maintains a shelf life of up to 12 months, ensuring product integrity and performance.

NINGBO INNO PHARMCHEM CO.,LTD. is a leading manufacturer and supplier of high-quality Octaphenylcyclotetrasiloxane. Our commitment to stringent quality control ensures that every batch meets the highest industry standards. For detailed product specifications, current price information, or to buy / purchase Octaphenylcyclotetrasiloxane, please contact our sales team. We are dedicated to providing reliable supply solutions and competitive pricing for all your industrial and research needs.