Description

Vinyltrihydroxysilane is a versatile organosilicon compound featuring a reactive vinyl group and three hydroxyl groups. This unique bifunctional structure makes it a valuable coupling agent and monomer for creating hybrid organic-inorganic materials. It is essential for industries requiring enhanced adhesion, cross-linking, and surface modification. Key applications include the production of specialty silicones, advanced composites, and durable coatings.

Application

• Silicone Cross-linking Agent: Used as a key monomer or cross-linker in the synthesis of vinyl-functional silicone resins, rubbers, and sealants.
• Surface Modification & Coupling Agent: Improves adhesion between inorganic materials (glass, minerals, metals) and organic polymers in composites and filled plastics.
• Adhesive & Coating Formulations: Enhances the durability, water resistance, and chemical stability of industrial adhesives, primers, and protective coatings.
• Fiberglass & Mineral Treatment: Acts as a sizing or finishing agent for glass fibers and mineral fillers to improve compatibility with polymer matrices.
• Synthesis Intermediate: Serves as a precursor for other functional silanes and siloxanes through hydrolysis, condensation, or addition reactions.
• Nanomaterial Functionalization: Used to modify the surface of nanoparticles (e.g., silica, metal oxides) for better dispersion and integration into advanced materials.

Basic Information

Product Name	Vinyltrihydroxysilane
CAS No.	143-48-6
Molecular Formula	C2H6O3Si
Molecular Weight	106.15 g/mol
Synonyms	Ethenylsilanetriol; Trihydroxyvinylsilane; Vinylsilanetriol; VTES (common abbreviation); Vinylsilanol; Ethenyltrihydroxysilane; 1-Ethenylsilanetriol; Vinyltrihydroxymonosilane
EINECS	205-605-1

Quality Control

Our Vinyltrihydroxysilane is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity. We adhere to relevant industry standards, and comprehensive testing is performed to verify key parameters such as identity, assay, and impurity levels. A Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee product integrity and support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area. Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen) to prevent hydrolysis and degradation. Recommended storage temperature is 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 95.0%
Water Content (KF)	≤ 1.0%
Refractive Index (n20D)	1.430 - 1.440
Density (20°C)	1.10 - 1.20 g/mL

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