Description

Trimethoxy(3-Thiocyanatopropyl)Silane is a bifunctional organosilane coupling agent that combines a hydrolyzable methoxysilyl group with a reactive thiocyanate (SCN) functional group. This unique structure makes it a critical component for modifying material interfaces, enhancing adhesion, and introducing specific chemical functionality to inorganic substrates. It is essential for manufacturers and formulators in advanced materials sectors seeking to improve the performance and durability of their products. Key industries that utilize this specialty silane include adhesives, sealants, coatings, and composite materials.

Application

• Adhesive & Sealant Formulation: Acts as a coupling agent to improve the bond strength and moisture resistance between organic polymers (e.g., epoxies, polyurethanes) and inorganic surfaces like glass, metals, or minerals.
• Surface Modification for Coatings: Used to pretreat fillers (silica, glass beads) and pigments to enhance their dispersion in polymer matrices and improve coating adhesion, corrosion resistance, and weatherability.
• Fiberglass & Composite Reinforcement: Applied as a sizing or finishing agent on glass fibers to promote interfacial adhesion with resin systems, resulting in composites with higher mechanical strength and durability.
• Rubber & Tire Industry: Functions as a coupling agent for silica-filled rubber compounds, improving reinforcement, reducing rolling resistance, and enhancing abrasion resistance in tire treads.
• Specialty Polymer Synthesis: Serves as a monomer or modifier for introducing thiocyanate groups into siloxane polymers or hybrid organic-inorganic materials, enabling further chemical reactions or specific properties.
• Mineral Filler Treatment: Modifies the surface of talc, clay, and other mineral fillers to increase compatibility with hydrophobic polymer systems, improving mechanical properties and processability.

Basic Information

Product Name	Trimethoxy(3-Thiocyanatopropyl)Silane
CAS No.	56859-24-6
Molecular Formula	C7H15NO3SSi
Molecular Weight	221.35 g/mol
Synonyms	3-Thiocyanatopropyltrimethoxysilane; (3-Thiocyanatopropyl)trimethoxysilane; Trimethoxy(3-thiocyanopropyl)silane; Silane, trimethoxy[3-(thiocyanato)propyl]-; SCNPTMS; γ-Thiocyanatopropyltrimethoxysilane; 3-(Trimethoxysilyl)propyl thiocyanate; Propylthiocyanatotrimethoxysilane
EINECS	Contact for details

Quality Control

Our Trimethoxy(3-Thiocyanatopropyl)Silane is manufactured under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure consistency, purity, and performance. We provide comprehensive Certificates of Analysis (COA) detailing key specifications such as assay, identity, and impurity profiles. Our quality commitment aligns with industry best practices to support your research, development, and production needs with reliable material.

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 degradation from atmospheric moisture. Keep away from strong acids, bases, and oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC or Titration)	≥ 97.0%
Refractive Index (n20/D)	1.460 - 1.470
Density (g/mL, 25°C)	1.07 - 1.10

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