Tetramethyl diphenyl trisiloxane (Product Model: IOTA 232) is a high-performance functional compound in the organosilicon industry, with the chemical name 1,1,5,5-Tetramethyl-3,3-diphenyl-trisiloxane. Its aliases include Tetramethyldiphenyltrisiloxane, Phenyl hydrogen silicone oil, and Phenyl hydrogen siloxane, and its CAS number is 17875-55-7. Endowed with high purity and excellent compatibility, it has become a key material in the production of various organosilicon products.
This product exhibits regular physical properties: it appears as a colorless and transparent liquid with high visual purity and no impurities; its specific gravity is stable at 0.994, and the refractive index at 20℃ is 1.500, featuring strong controllability of physical parameters; the boiling point is 130-131°C under 2.5mmHg, and the flash point is above 110℃, providing good thermal stability and operational safety; tested by Gas Chromatography (GC), its purity is not less than 98%, and the high-purity characteristic ensures functional stability and reliability during application.
One of its core advantages is excellent miscibility. It can blend well with dimethyl siloxane, liquid silicone rubber, phenyl silicone rubber, and phenyl resin without undesirable phenomena such as stratification or precipitation, laying a solid foundation for the uniform mixing of material systems. Based on this feature, it is widely used as a crosslinker for addition-cure silicone rubber, phenyl silicone rubber, and phenyl resin. In the reaction process, it can effectively promote the crosslinking combination between molecules, help build a stable material network structure, and further improve the key properties of end products such as elasticity, aging resistance, and high-temperature resistance, adapting to the production needs of high-end silicone rubber products, special resin materials and other fields.