Description

n-Dodecyltriethoxysilane is a long-chain alkyltrialkoxysilane coupling agent, a key organosilicon intermediate prized for its ability to impart hydrophobic and oleophilic properties to inorganic surfaces. Its primary value lies in modifying surface energy, promoting adhesion, and enhancing compatibility between organic polymers and inorganic substrates like glass, metals, and minerals. This product is essential for manufacturers in the coatings, sealants, plastics, and advanced materials industries seeking to improve product performance and durability.

Application

• As a surface modifier and coupling agent for silica, glass fibers, and other mineral fillers to improve dispersion and bonding in polymer composites.
• To create hydrophobic and water-repellent coatings on construction materials, textiles, and electronic components.
• As a key intermediate in the synthesis of specialty silicon-based polymers and resins with tailored properties.
• For the surface treatment of nanoparticles to prevent agglomeration and enhance compatibility in nanocomposites.
• In the formulation of adhesives and sealants to improve adhesion to difficult substrates and environmental resistance.
• As a release agent precursor and mold treatment in plastic and rubber manufacturing.

Basic Information

Product Name	n-Dodecyltriethoxysilane
CAS No.	18536-91-9
Molecular Formula	C18H40O3Si
Molecular Weight	332.60 g/mol
Synonyms	Dodecyltriethoxysilane; Triethoxy(dodecyl)silane; Dodecyltriethoxysilane; n-Dodecyltriethoxysilane; Dodecyltriethoxysilane; Dodecyl triethoxysilane; Silane, dodecyltriethoxy-; LT-5720; KH-312 (common trade designation)
EINECS	242-420-1

Quality Control

Our n-Dodecyltriethoxysilane is produced under a stringent quality management system. Each batch undergoes rigorous analytical testing, including GC, NMR, and FTIR, to ensure identity, purity, and consistency meet our high standards and your application requirements. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent contact with atmospheric moisture, which can lead to hydrolysis and degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Refractive Index (n20/D)	1.425 - 1.435
Density (g/mL, 25°C)	0.87 - 0.89

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