Description

Hydroxymethyltriethoxysilane is a versatile organosilicon compound that serves as a key reactive intermediate in advanced material synthesis. Its bifunctional structure, featuring both a hydrolyzable ethoxysilyl group and a hydroxymethyl group, enables it to act as an effective coupling agent and surface modifier. This product is essential for manufacturers in the adhesives, sealants, coatings, and specialty polymer industries seeking to enhance material compatibility, adhesion, and performance.

Application

• As a coupling agent in mineral-filled composites and fiber-reinforced plastics to improve interfacial adhesion and mechanical properties.
• As a surface treatment agent for glass, silica, and other inorganic materials to impart organic functionality and improve dispersion in polymer matrices.
• As a crosslinking agent and modifier in silicone resin and RTV (Room Temperature Vulcanizing) silicone formulations.
• As a key precursor or intermediate in the synthesis of more complex functional silanes and hybrid organic-inorganic materials.
• In the formulation of adhesives and sealants to enhance bonding to difficult substrates and improve environmental resistance.
• In protective and functional coatings to increase corrosion resistance, hydrophobicity, and durability.

Basic Information

Product Name	Hydroxymethyltriethoxysilane
CAS No.	162781-73-9
Molecular Formula	C7H18O4Si
Molecular Weight	194.30 g/mol
Synonyms	(Hydroxymethyl)triethoxysilane; Triethoxy(hydroxymethyl)silane; Hydroxymethyltriethoxysilane; 1-Hydroxy-1-(triethoxysilyl)methane; (Triethoxysilyl)methanol; Silane, (hydroxymethyl)triethoxy-; Methanol, (triethoxysilyl)-
EINECS	Contact for details

Quality Control

Our Hydroxymethyltriethoxysilane is manufactured under strict quality management protocols. Each batch undergoes rigorous analytical testing, including gas chromatography (GC) and infrared spectroscopy (IR), to ensure consistent purity and performance. A comprehensive Certificate of Analysis (COA) detailing assay, identity, and impurity profiles is provided with every shipment to guarantee compliance with your technical requirements.

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). Keep container tightly sealed under an inert atmosphere (e.g., nitrogen) to prevent moisture absorption and degradation. Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms
Assay (GC)	≥ 97.0%
Refractive Index (n20D)	1.390 - 1.400
Density (20°C)	0.92 - 0.98 g/mL

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