Description

n-Octadecyldimethyl(Dimethylamino)Silane is a high-purity organosilicon compound featuring a long alkyl chain and a reactive dimethylamino group, making it a versatile silane coupling agent and surface modifier. Its primary value lies in its ability to form durable covalent bonds between inorganic substrates and organic polymers, significantly enhancing material compatibility and performance. This product is essential for manufacturers in the coatings, adhesives, plastics, and advanced materials industries seeking to improve adhesion, dispersion, and hydrophobicity in their formulations.

Application

• Surface Modification Agent: Used to hydrophobically treat silica, glass fibers, and other mineral fillers to improve compatibility with polymer matrices.
• Coupling Agent for Composites: Enhances the interfacial adhesion between inorganic fillers (e.g., clay, talc) and organic resins in plastic and rubber composites, improving mechanical properties.
• Primer and Adhesion Promoter: Formulated into primers for coatings, inks, and adhesives to promote bonding on difficult substrates like metals and glass.
• Release Coating Intermediate: Serves as a key intermediate in the synthesis of silicone-based release coatings for labels and tapes.
• Nanomaterial Functionalization: Used to functionalize nanoparticles (e.g., silica, metal oxides) for controlled dispersion in solvents and polymers.
• Water Repellent Treatments: Applied to create durable water-repellent surfaces on textiles, construction materials, and paper.

Basic Information

Product Name	n-Octadecyldimethyl(Dimethylamino)Silane
CAS No.	76328-77-3
Molecular Formula	C22H49NSi
Molecular Weight	355.72 g/mol
Synonyms	Octadecyldimethyl(dimethylamino)silane; Dimethyl(octadecyl)[(trimethylsilyl)amino]silane; (Dimethylamino)dimethyloctadecylsilane; N,N-Dimethyl-1-octadecanamine, 1-(dimethylsilyl)-; Silane, dimethyl(octadecyl)(dimethylamino)-; Amino Silane Coupling Agent; Stearyl Dimethylaminosilane; ODS
EINECS	Contact for details

Quality Control

Our n-Octadecyldimethyl(Dimethylamino)Silane is produced under stringent quality management systems. Each batch undergoes comprehensive analytical testing, including assay by GC or titration and identification by FT-IR, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing all specifications are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen) after opening to prevent degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 97.0%
Density (20°C)	0.82 - 0.86 g/mL
Refractive Index (n20/D)	1.440 - 1.450

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