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Product Code:SP216

Product Name:Octaphenyl-POSS

Product Introduction:

Octaphenyl silsesquioxane (POSS) is an organic-inorganic hybrid molecule with a three-dimensional cage structure of 1.5 nm. It combines the high thermal stability and low dielectric constant of the inorganic core with the hydrophobic compatibility of the phenyl shell. As a nanofiller, it can remarkably improve the mechanical properties, flame retardancy and UV resistance of polymers such as polyimide and epoxy resin. It is widely applied in high-performance coatings, electronic encapsulation and aerospace composite materials.

Basic Information

  • Chinese name:八苯基倍半硅氧烷
  • CAS number:[5256-79-1]
  • Molecular formula:C₄₈H₄₀O₁₂Si₈

Structural formula

Physical properties

  • Molecular weight:1033.51

Product standard

Technical indicators

Project Indicator
Appearance White powder
Melting point >440°C

Characteristic advantages

  • Ultra-high heat resistance
  • Low dielectric constant
  • High mechanical strength
  • Can be used for optical coatings or waveguide materials
  • Absorbs UV radiation, slowing material aging

Application field

  • Polymer modification
  • High-performance coatings
  • Electronic packaging
  • Aerospace composites
  • Optics and optoelectronics

Safe handling

  • Wear eye protection and protective gloves as required while handling the product
  • Use the product in a well ventilated area
  • Please consult our MSDS

Use storage

  • When stored in its original container below 40°C and unopened, the shelf life is 2 years. It can still be used after re-inspection
  • Store in a cool and dry place out of direct sunlight
  • Keep out of the reach of children

Packaging Information