Physical and Chemical Properties

• Appearance: Pale yellow to light brown transparent liquid with slight ethanol odor
• Solubility: Soluble in ethanol, acetone, benzene, toluene and other solvents; insoluble in water
• Density (ρ₂₀): 1.0400 ± 0.0200 g/cm³
• Refractive index (n₂₅ᴰ): 1.4600 ± 0.0200
• Boiling point: N.A.

Applications

1. Si75 is a widely used multifunctional organosilicon additive for rubber and tire industries.
   • Improves elastic modulus and tensile strength of rubber
   • Significantly enhances wear resistance and compression performance
   • Reduces rubber viscosity and saves processing energy consumption
   It is most suitable for rubber formulations using hydroxyl-containing fillers in double-bond polymers or blends.
   • Suitable fillers: silica, silicate, chalk, etc.
   • Suitable rubbers: natural rubber (NR), styrene-butadiene rubber (SBR), isoprene rubber (IR), butadiene rubber (BR), nitrile rubber (NBR), ethylene propylene diene monomer (EPDM), etc.
2. Compared with Si96, Si75 has lower activity disulfide functional groups, providing better and more reliable scorch safety.