Description

Octadecyl Diisobutyl (Dimethyl Amino) Silane is a specialized organosilicon compound designed for surface modification and coupling applications. This product is valued for its ability to impart hydrophobic and organophilic properties to inorganic substrates, enhancing compatibility and performance in composite materials. It is primarily utilized by manufacturers in the coatings, plastics, and advanced materials industries seeking to improve adhesion, dispersion, and moisture resistance.

Application

• As a surface treatment agent for silica, glass fibers, and other mineral fillers to improve dispersion in polymer matrices.
• As a hydrophobic modifier in coatings and sealants to enhance water repellency and durability.
• As a coupling agent in mineral-filled plastics and rubber composites to strengthen the interface between filler and polymer.
• In the formulation of release coatings and mold release agents.
• For the functionalization of nanoparticles to tailor surface properties for specific advanced material applications.
• As an intermediate in the synthesis of more complex silane-based specialty chemicals.

Basic Information

Product Name	Octadecyl Diisobutyl (Dimethyl Amino) Silane
CAS No.	151613-23-9
Molecular Formula	C26H57NOSi
Molecular Weight	427.82 g/mol
Synonyms	N,N-Dimethyl-N-octadecylsilylamine, Diisobutyl(octadecyl)dimethylaminosilane; Octadecyldiisobutyldimethylaminosilane; (Dimethylamino)octadecyldiisobutylsilane; Amino Silane Coupling Agent; Long-chain alkyl aminosilane; Silane coupling agent KH-??? (analog); Diisobutyl(octadecyl)(dimethylamino)silane
EINECS	Contact for details

Quality Control

Our Octadecyl Diisobutyl (Dimethyl Amino) Silane is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including assay and impurity profile determination, to ensure consistency and performance. Certificates of Analysis (COA) documenting purity, identity, and key physical properties are available upon request to support your quality assurance protocols.

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 degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC or NMR)	≥ 95.0%
Density (at 20°C)	~0.85 - 0.87 g/mL
Refractive Index (n20D)	~1.450 - 1.455

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