Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

DOW XIAMETER OFS-6940 Silane

DOW XIAMETER OFS-6940 Silane is a reactive organosilane coupling agent from Dow’s XIAMETER specialty silicones portfolio, designed to enhance adhesion between inorganic substrates (e.g., glass, metals) and organic polymers in composites, sealants, and coatings—improving mechanical strength, moisture resistance, and durability through covalent bonding.
  • dow xiameter ofs 6940 silane_ea6da981
  • dow xiameter ofs 6940 silane_ea6da981

Features Of DOW XIAMETER OFS-6940 Silane

  1. Highly reactive alkoxy silane designed for rapid hydrolysis and condensation under mild conditions.

  2. Offers excellent compatibility with organic polymers, including acrylics, polyurethanes, and epoxies.

  3. Enhances adhesion to inorganic substrates such as glass, metals, and mineral-filled composites.

  4. Provides improved moisture resistance and long-term durability in cured coatings and sealants.

  5. Low volatility and favorable handling characteristics compared to chlorosilane alternatives.

Typical Applications Of DOW XIAMETER OFS-6940 Silane

  1. Adhesion promoters in automotive OEM and refinish coatings.

  2. Surface modifiers for silica and glass fillers in composite materials.

  3. Functional additives in silicone-modified acrylic sealants and caulks.

  4. Coupling agent in UV-curable and thermoset resin systems.

  5. Moisture-scavenging component in low-VOC industrial primers and adhesives.

Specifications Of DOW XIAMETER OFS-6940 Silane

Chemical TypeAlkoxy silane (3-methacryloxypropyltrimethoxysilane derivative)
Product FormLiquid
AppearanceClear, colorless to pale yellow liquid
Density (25°C)Approx. 0.98 g/cm³
Refractive Index (25°C)1.42–1.44
Flash Point (PMCC)Approx. 75°C
SolubilityMiscible with common organic solvents (e.g., alcohols, acetone, toluene); hydrolyzes in water
Storage Stability12 months unopened at 5–30°C; store in dry, well-ventilated area away from moisture


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