Description

Hydroxymethyltriethoxysilane, 50% In Ethanol is a versatile organosilicon compound supplied as a stabilized solution. This product serves as a key bifunctional coupling agent, featuring both a reactive hydroxymethyl group and hydrolyzable ethoxysilyl groups, enabling strong covalent bonds between organic polymers and inorganic substrates. It is essential for manufacturers in the coatings, adhesives, and sealants industries seeking to enhance material compatibility, adhesion, and durability. The 50% solution in ethanol offers a convenient and safe handling form for industrial processing.

Application

• Crosslinking Agent in silicone-based resins and elastomers to improve mechanical properties and thermal stability.
• Surface Modifier & Primer for glass, metals, and minerals to promote adhesion of paints, inks, and coatings.
• Adhesion Promoter in composite materials, fiberglass, and filled polymer systems to strengthen the interface between filler and matrix.
• Intermediate for the synthesis of more complex silane coupling agents and specialty organosilicon chemicals.
• Water Repellent Treatments for construction materials like concrete and stone, providing hydrophobic surfaces.
• Fiber Sizing in the production of glass or mineral fibers for reinforced plastics to improve fiber-resin bonding.

Basic Information

Product Name	Hydroxymethyltriethoxysilane, 50% In Ethanol
CAS No.	162781-70-6
Molecular Formula	C7H18O4Si
Molecular Weight	194.30 g/mol
Synonyms	(Hydroxymethyl)triethoxysilane; Triethoxy(hydroxymethyl)silane; Hydroxymethyltriethoxysilane; Silane, triethoxy(hydroxymethyl)-; 1-Hydroxy-1-(triethoxysilyl)methane; (Triethoxysilyl)methanol; HMTS; CAS 162781-70-6
EINECS	Contact for details

Quality Control

Our Hydroxymethyltriethoxysilane, 50% In Ethanol is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistency, purity, and performance. Certificates of Analysis (COA) detailing key parameters such as assay, solvent content, and identity are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area away from heat sources and ignition points. Due to its highly volatile nature and ethanol content, keep away from open flames and oxidizing agents. Recommended storage temperature is 15-25°C. Keep container tightly sealed when not in use to prevent evaporation and moisture absorption.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	48.0 - 52.0 % (as Hydroxymethyltriethoxysilane)
Ethanol Content	Balance
Specific Gravity (20°C)	0.90 - 0.95
Refractive Index (20°C)	1.380 - 1.390

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