IOTA 233 Hydrogen‑terminated phenyl polysiloxane (CAS:68952‑30‑7) is T‑type hydrogen‑capped phenyl polysiloxane, colorless transparent viscous liquid. Molecular weight:550‑3000, specific gravity 1.00‑1.01, refractive index(20℃):1.46‑1.52, viscosity 5‑5000 mm²/s for diversified formula requirements. Hydrogen content:0.35‑0.75 %, flash point＞110℃. It features excellent compatibility with methyl silicone oil, liquid silicone rubber, phenyl silicone rubber and phenyl silicone resin without phase separation. It acts as cross‑linker for addition‑cure silicone rubber, phenyl silicone rubber and phenyl silicone resin. Packed in 15 kg and 200 kg coated iron drums, store in cool ventilated area, suitable for mass‑production of high‑end phenyl‑silicone materials.