Description

Triethoxyisobutylsilane is a versatile organosilicon compound, specifically an alkoxysilane, widely used as a coupling agent and surface modifier. Its primary value lies in its ability to form strong, durable bonds between inorganic substrates and organic polymers, enhancing composite material performance. This chemical is essential for manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as for producers of advanced composites and mineral-filled plastics.

Application

• As a coupling agent in mineral-filled polymer composites (e.g., talc, clay, silica-filled plastics) to improve mechanical properties and dispersion.
• As a surface treatment agent for glass fibers, minerals, and metals to enhance adhesion to resin matrices in fiber-reinforced plastics (FRP).
• In the formulation of moisture-curable silicone sealants and adhesives to improve adhesion to various substrates.
• As a key intermediate in the synthesis of more complex silane-modified polymers and specialty silicone products.
• For the hydrophobization of surfaces in construction materials, providing water repellency.
• In the production of crosslinking agents for silicone rubber and other elastomeric materials.

Basic Information

Product Name	Triethoxyisobutylsilane
CAS No.	17980-47-1
Molecular Formula	C10H24O3Si
Molecular Weight	220.39 g/mol
Synonyms	Isobutyltriethoxysilane; (Isobutyl)triethoxysilane; Triethoxy(isobutyl)silane; Silane, triethoxyisobutyl-; Isobutyltriethoxysilane; NSC 93771; 2-Methylpropyltriethoxysilane; Triethoxy(2-methylpropyl)silane
EINECS	241-934-8

Quality Control

Our Triethoxyisobutylsilane is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including gas chromatography (GC) for purity and identity confirmation, to ensure it meets precise specifications. A comprehensive Certificate of Analysis (COA) detailing assay, purity, and key physical properties is provided with each shipment to guarantee consistency and 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). Due to its hygroscopic and highly volatile nature, containers must be kept tightly sealed when not in use to prevent moisture absorption and evaporation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Clear, colorless liquid
Identification (IR)	Conforms
Assay (GC)	≥ 97.0%
Density (20°C)	0.88 - 0.90 g/cm³
Refractive Index (n20/D)	1.395 - 1.400
Water Content (Karl Fischer)	≤ 0.1%

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