Phenyltris(trimethylsiloxy)silane

Phenyltris(trimethylsiloxy)silane (CAS 2116-84-9), also known as Tris(trimethylsiloxy)phenylsilane, is a phenyl-functional silicone fluid used across coatings, personal care, and lubrication markets. The phenyl substitution raises refractive index compatibility and thermal stability relative to standard dimethyl silicones, making it a preferred carrier and surface modifier where those properties drive formulation decisions.

In personal care, it functions as a lightweight, non-greasy carrier fluid in skin and hair formulations, improving spreadability and delivering a dry, silky after-feel for the end user. Coatings formulators incorporate it to enhance surface wetting and gloss on substrates where conventional silicone fluids underperform optically, ensuring a high-quality finish and superior performance.

In high-temperature lubricant systems, it serves as a base fluid or additive where thermal resistance beyond standard silicone oils is required for demanding industrial environments and machinery. Adhesive and sealant manufacturers use it as a processing aid or reactive diluent to adjust viscosity and surface adhesion profiles, allowing for precise control over the final product characteristics.

Phenyltris(trimethylsiloxy)silane is supplied as a clear, low-viscosity liquid. It is available in technical and cosmetic grades, with cosmetic-grade material meeting purity requirements for personal care applications. Packaging typically ranges from small laboratory quantities through drum and IBC volumes for industrial supply, ensuring flexible logistics for manufacturers and researchers across various global sectors.