Description

Bis(Trimethoxysilylmethyl) Sulfide is a specialized organosilicon compound featuring a sulfur bridge between two trimethoxysilylmethyl groups. This unique molecular structure makes it a valuable bifunctional silane coupling agent and crosslinking precursor, essential for modifying material interfaces. It is primarily used by formulators and manufacturers in the rubber, adhesive, and sealant industries to enhance the bonding between inorganic fillers and organic polymer matrices.

Application

• As a coupling agent in silica-filled rubber compounds (e.g., tires, industrial rubber goods) to improve reinforcement and reduce rolling resistance.
• As a crosslinking agent and adhesion promoter in specialty silicone sealants and adhesives.
• As a surface modifying agent for mineral fillers (e.g., clay, talc) in polymer composites to improve dispersion and mechanical properties.
• In the synthesis of hybrid organic-inorganic materials (ORMOSILs) for coatings and advanced composites.
• As a key intermediate in the preparation of sulfur-containing silanes for further chemical transformations.
• To enhance the water resistance and durability of fiberglass-reinforced plastics.

Basic Information

Product Name	Bis(Trimethoxysilylmethyl) Sulfide
CAS No.	60764-84-3
Molecular Formula	C8H22O6S1Si2
Molecular Weight	302.50 g/mol
Synonyms	Bis(trimethoxysilylmethyl) sulfide; Sulfur-bis(methylene trimethoxysilane); (Trimethoxysilylmethylthio)trimethoxysilane; 1,1'-[Thiobis(methylene)]bis[trimethoxysilane]; Sila-Ace S 330; Silane coupling agent S 330; Sulfur-containing silane; Bis[(trimethoxysilyl)methyl] sulfide
EINECS	Contact for details

Quality Control

Our production of Bis(Trimethoxysilylmethyl) Sulfide adheres to stringent quality protocols to ensure batch-to-batch consistency and performance reliability. Each lot is analyzed using advanced techniques including GC, NMR, and titration to verify critical parameters such as purity, identity, and functional group content. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment to support your quality assurance processes.

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 contact with atmospheric moisture, which can lead to hydrolysis and reduced efficacy.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 95.0%
Density (20°C)	1.08 - 1.12 g/cm³
Refractive Index (n20D)	1.430 - 1.440

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