Description

Triethoxyoctylsilane is an organosilicon coupling agent characterized by its triethoxy head group and a hydrophobic octyl chain. This bifunctional structure is critical for modifying surfaces and enhancing the compatibility between inorganic materials and organic polymers. It is essential for manufacturers in the coatings, adhesives, and sealants industries seeking to improve water repellency, adhesion, and dispersion properties. The compound is also widely used as a key intermediate in the synthesis of more complex silane derivatives.

Application

• As a hydrophobic agent and adhesion promoter in silicone sealants, paints, and industrial coatings.
• As a surface modifier for inorganic fillers (e.g., silica, glass fibers) to improve their dispersion and compatibility in polymer matrices like plastics and rubber.
• As a key intermediate in the synthesis of other functional organosilanes for specialized applications.
• In the formulation of water-repellent treatments for construction materials, including concrete and stone.
• For priming metal surfaces to enhance corrosion resistance and paint adhesion.
• In the production of release coatings and mold-making materials.

Basic Information

Product Name	Triethoxyoctylsilane
CAS No.	2943-75-1
Molecular Formula	C14H32O3Si
Molecular Weight	276.49 g/mol
Synonyms	Octyltriethoxysilane; n-Octyltriethoxysilane; Triethoxy(octyl)silane; Silane, octyltriethoxy-; OTES; Dynasylan OCTEO; KH-308; A-137
EINECS	220-941-2

Quality Control

Our Triethoxyoctylsilane is produced under stringent quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analysis, including assay, identity confirmation, and impurity profiling. A Certificate of Analysis (COA) detailing all test results is provided with every shipment. We adhere to relevant industry standards and can support customer-specific quality requirements upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive). Keep the container tightly sealed when not in use to prevent contact with atmospheric moisture, which can lead to hydrolysis and degradation.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Refractive Index (n20/D)	1.415 - 1.420
Density (g/mL, 25°C)	0.875 - 0.885

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.