Description

n-Hexadecyltriethoxysilane is a long-chain alkyltrialkoxysilane coupling agent, a key organosilicon compound used to impart hydrophobic and organophilic properties to inorganic surfaces. Its primary value lies in its ability to form durable, water-repellent coatings and to compatibilize organic polymers with inorganic fillers like silica or glass. This makes it an essential material for manufacturers in the coatings, plastics, and construction industries seeking to enhance product performance, durability, and adhesion.

Application

• Surface modification agent for inorganic fillers (e.g., silica, glass fibers, minerals) to improve dispersion and compatibility in polymer composites.
• Hydrophobic coating precursor for construction materials like concrete, stone, and brick to provide water repellency and reduce weathering.
• Key intermediate in the synthesis of specialty silicone resins and polymers with long alkyl chains.
• Adhesion promoter in sealants, adhesives, and coatings where strong bonding to mineral substrates is required.
• Surface treatment for nanoparticles to prevent agglomeration and facilitate incorporation into organic matrices.
• Waterproofing agent for textiles and leather treatments.

Basic Information

Product Name	n-Hexadecyltriethoxysilane
CAS No.	16415-13-7
Molecular Formula	C22H48O3Si
Molecular Weight	388.71 g/mol
Synonyms	Hexadecyltriethoxysilane; C16 Triethoxysilane; Triethoxy(hexadecyl)silane; n-Cetyl triethoxysilane; Silane, hexadecyltriethoxy-; 1-Hexadecanol, 1-(triethoxysilyl)-; Palmitic alcohol triethoxysilane derivative; Organosilane coupling agent KH-216 (trade name variant)
EINECS	240-455-6

Quality Control

Our n-Hexadecyltriethoxysilane is manufactured under strict quality management protocols. Each batch undergoes rigorous analytical testing, including Gas Chromatography (GC) for purity and identity confirmation, to ensure it meets precise chemical and physical specifications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee consistency and support your quality assurance processes.

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 product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent contact with atmospheric moisture, which can lead to hydrolysis and reduced efficacy.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Refractive Index (n20D)	1.435 - 1.445
Density (20°C)	0.87 - 0.89 g/mL

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