Octaphenylcyclotetrasiloxane is a compound with an important position in the field of organosilicon materials. Its product grade is AKT, with the Chinese name being Octaphenylcyclotetrasiloxane, the English name Octaphenylcyclotetrasiloxane, the CAS number 546 - 56 - 5, the molecular formula C48H40O4Si4, the chemical structure formula [(C6H5)2SiO]4, and the molecular weight 793.18.

In appearance, it is a white powdery crystal, with a purity of ≥99.0%. The melting point range is 160 - 205°C, the boiling point is 334°C, and the flash point is 200°C. Regarding solubility, it is insoluble in water but soluble in general chemical solvents.

Octaphenylcyclotetrasiloxane has a variety of important uses. It is an ideal raw material for synthesizing intermediates and can be used to synthesize high - temperature - resistant phenyl silicone oil and other polymer compounds. In practical applications, such as in the preparation of heat - dissipation coatings, it works together with other components to give the coating good heat - dissipation performance, strong adhesion, high stability, and non - toxicity.