Xiameter OFS-6040 Silane

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Xiameter OFS-6040 Silane is a bifunction silane containing a glycidoxy reactive organic group and a trimethoxysilyl inorganic group. Xiameter OFS-6040 Silane is used in the finish on fiberglass rovings. Xiameter OFS-6040 Silane is effective in improving the physical properties of the mineral-filled polymer such as silica-filled epoxy resin.

Glycidoxypropyltrimethoxysilane CH2(O)CHCH2OC3H6-Si(OCH3)3 – Coupling agent for many thermoset resins with glass or mineral fillers. Color is clear liquid, flash point open cup is 122 deg C. Use in a wide variety of surface treatment and coupling agent application.


  • Epoxy reactivity
  • Methoxysilyl inorganic reactivity


  • Improves adhesion
  • Increases composite strength properties
  • Increased composite wet and dry tensile strength and modulus
  • Increased composite wet and dry flexural strength and modulus
  • Increased wet and dry compressive strength
  • Better appearance
  • Better filler wet-out and dispersion
  • Lower viscosity of filled liquid resins
  • Improved processability

Typical Properties

Test Unit Value
Appearance Clear liquid
Clolor APHA 50
Viscosity cst 3
Specific gravity at 25°C (77°F) 1.07
Refractive index 1.428
Flash point-closed cup °C (°F) >101 (>213)
Purity by GC % >98.5
Cloride ppm <10
Molecular weight g/mol 236.34
CAS # 2530-83-8
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