Name: Momentive Silquest A-137 Octyltriethoxysilane
Brand: Guangzhou Eric Wei Chemical Co., Ltd.

Features Of Momentive Silquest A-137 Octyltriethoxysilane

Hydrophobic surface modifier that imparts water repellency and reduced surface energy to inorganic substrates.
Reactive silane with three hydrolyzable ethoxy groups, enabling robust covalent bonding to silica, glass, metals, and metal oxides.
Long alkyl (C8) chain provides enhanced compatibility with organic polymers and improved dispersion stability in non-polar media.
Low volatility and favorable handling characteristics compared to shorter-chain alkylsilanes.
Enables improved interfacial adhesion in filled composites, particularly in silica-reinforced elastomers and thermoplastics.

Typical Applications Of Momentive Silquest A-137 Octyltriethoxysilane

Silica surface treatment for high-performance rubber compounds, including tire treads and industrial hoses.
Adhesion promoter in sealants and caulks for glass, aluminum, and concrete substrates.
Surface modifier for pigments and fillers in coatings, inks, and adhesives to enhance dispersion and reduce agglomeration.
Hydrophobizing agent in construction materials such as grouts, mortars, and waterproofing admixtures.
Functional additive in silicone-modified alkyds and hybrid resin systems for improved weather resistance.

Chemical Type	Alkyltrialkoxysilane (Octyltriethoxysilane)
Product Form	Liquid
Appearance	Clear, colorless to pale yellow liquid
Primary Applications	Filler surface treatment, adhesion promotion, hydrophobization
Key Features	Hydrophobicity, covalent substrate bonding, organic matrix compatibility
Benefits	Improved filler dispersion, enhanced moisture resistance, better mechanical performance in composites
Molecular Weight (approx.)	264.5 g/mol
Specific Gravity (25°C)	0.89–0.91

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