Phenylsilsesquioxanes, hydrogen-terminated (IOTA 233) is a T type polyphenylsiloxane terminated by hydride, with the CAS number 68952-30-7 and a molecular weight range of 550~3000. It boasts excellent compatibility and wide application potential in silicone-based material systems. In terms of miscibility, this product exhibits good compatibility with dimethyl siloxane, liquid silicone rubber, phenyl silicone rubber and phenyl resin, enabling stable performance in various silicone material formulations. As a key application, it serves as an ideal crosslinker for liquid silicone rubber, phenyl silicone rubber and phenyl resin, effectively promoting the formation of stable crosslinked structures in materials and enhancing the overall performance of the final products. The product features precise and controllable technical specifications: Appearance is colorless and clear liquid; specific gravity ranges from 1.00 to 1.01; refractive index at 20℃ is 1.46-1.52; viscosity at 25℃ is 5~5000 mm²/s; flash point is above 110℃; and the hydrogen content (H%) is 0.35-0.75. All parameters meet the stringent requirements of industrial production.