Description

Trimethoxy[3-(Thiiranylmethoxy)Propyl]Silane is a specialized organosilicon compound featuring a unique thiirane (episulfide) functional group. This dual functionality makes it a highly effective coupling agent and adhesion promoter for materials requiring enhanced bonding between organic polymers and inorganic substrates. It is primarily sought after by manufacturers in the advanced composites, coatings, and rubber industries. The compound's ability to improve mechanical properties and chemical resistance is critical for high-performance applications.

Application

• As a key silane coupling agent in fiberglass-reinforced plastics and composite materials.
• An adhesion promoter in specialty paints, coatings, and adhesives for metals, glass, and minerals.
• A surface modifying agent for fillers (e.g., silica, clay) in the rubber and tire manufacturing industry.
• Used in the synthesis of hybrid organic-inorganic materials and functionalized polymers.
• As a chemical intermediate for further derivatization in pharmaceutical and agrochemical research.
• Improving the water resistance and durability of mineral-filled systems like sealants and encapsulants.

Basic Information

Product Name	Trimethoxy[3-(Thiiranylmethoxy)Propyl]Silane
CAS No.	69284-78-2
Molecular Formula	C9H20O4SSi
Molecular Weight	252.41 g/mol
Synonyms	3-(Thiiranylmethoxy)propyltrimethoxysilane; (3-(Oxiranylmethylthio)propyl)trimethoxysilane (related); Thiirane, 2-[(3-(trimethoxysilyl)propoxy)methyl]-; Silane, trimethoxy[3-[(thiiranylmethyl)oxy]propyl]-; Episulfide-functional silane; SCA 722 (potential trade name); Adhesion promoter with episulfide group; GPTMS analog (sulfur variant)
EINECS	Contact for details

Quality Control

Our production of Trimethoxy[3-(Thiiranylmethoxy)Propyl]Silane adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including assay (GC/HPLC), identity confirmation (IR, NMR), and impurity profiling, to ensure high purity and consistent performance. Certificates of Analysis (COA) documenting all critical specifications are provided with each shipment to guarantee traceability and compliance with your technical requirements.

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 under a dry inert atmosphere (e.g., nitrogen) to prevent hydrolysis and maintain product integrity. Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Refractive Index (n20/D)	1.440 - 1.450
Density (20°C)	1.05 - 1.15 g/mL
Water Content (Karl Fischer)	≤ 0.5%

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