Hits: 2649 img
Octaphenylcyclotetrasiloxane, known by its product designation IOTA AKT, is a cyclic siloxane compound that holds a significant position in the field of organosilicon chemistry. With the CAS number 546-56-5, a molecular formula of C48H40O4Si4, and a molecular weight of 793.18, this compound is well-characterized and widely recognized in industrial applications. The product appears as a white powdery crystal with a purity of 99.0% or higher, making it a reliable raw material for various synthesis processes.
The chemical structure of AKT is represented as [(C6H5)2SiO]4, which means four diphenylsiloxane units are connected through oxygen atoms to form a stable eight-membered ring. This cyclic architecture is the key to its thermal stability and its utility as a monomer in ring-opening polymerization reactions.
Understanding the physical and chemical properties of AKT is essential for anyone working with this material. The melting point ranges from 160 to 205°C, reflecting the crystalline nature of the product. The boiling point reaches 334°C, indicating that the compound remains stable well into high-temperature regimes. The flash point is recorded at 200°C, which means the material does not pose a significant fire hazard under normal storage and handling conditions.
In terms of solubility, AKT is insoluble in water but dissolves readily in common organic solvents. This behavior is highly advantageous for reactions carried out in non-aqueous media, where compatibility with organic solvent systems is a practical requirement. The high purity level (≥99.0%) ensures consistent performance in precision synthesis applications, where even trace impurities can affect the quality of the final product.
The primary applications of AKT revolve around two major directions: serving as a synthesis intermediate and being used in the production of high-temperature-resistant phenyl silicone oils and other polymer materials.
