Description

(3,3-Dimethylbutyl)Triethoxysilane is a specialized organosilicon compound, a silane coupling agent with a unique bulky alkyl group. This structure matters for its ability to modify surfaces and enhance compatibility between inorganic materials and organic polymers. It is needed by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as in advanced composites and surface treatment applications.

Application

• Surface Modification Agent: Used to treat fillers like silica, glass fibers, and minerals to improve dispersion and adhesion in polymer matrices.
• Coupling Agent for Composites: Enhances the interfacial bonding between inorganic reinforcements and organic resin systems in fiberglass and mineral-filled composites.
• Adhesion Promoter: Incorporated into primers, sealants, and adhesive formulations to improve bond strength to challenging substrates.
• Hydrophobic Coating Precursor: Serves as a key ingredient in formulations for water-repellent and anti-corrosion coatings on metals, glass, and concrete.
• Rubber and Elastomer Additive: Improves the processing and mechanical properties of silicone and organic rubber compounds.
• Crosslinking Agent: Utilized in moisture-curable systems, such as sealants and RTV silicones, to form durable, crosslinked networks.

Basic Information

Product Name	(3,3-Dimethylbutyl)Triethoxysilane
CAS No.	41966-94-3
Molecular Formula	C12H28O3Si
Molecular Weight	248.44 g/mol
Synonyms	Triethoxy(3,3-dimethylbutyl)silane; (3,3-Dimethylbutyl)triethoxysilane; 3,3-Dimethylbutyltriethoxysilane; Neohexyltriethoxysilane; Silane, triethoxy(3,3-dimethylbutyl)-; Dynasylan® 1189; KH-1189; A-1189
EINECS	255-615-8

Quality Control

Our (3,3-Dimethylbutyl)Triethoxysilane is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including gas chromatography (GC) for purity and identity verification, to ensure it meets precise industry specifications. Certificates of Analysis (COA) are provided with every shipment to guarantee supply reliability and batch-to-batch consistency for your critical formulations.

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 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	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 97.0%
Refractive Index (n20/D)	1.410 - 1.415
Density (20°C)	0.88 - 0.90 g/cm³

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