Description

S,S'-Di-3-Triethoxysilylpropyl Trithiocarbonate is a specialized organosilane coupling agent containing a trithiocarbonate functional group. This compound is engineered to act as a highly effective sulfur-containing silane, providing unique dual functionality for modifying inorganic surfaces and polymer matrices. It is essential for manufacturers in the rubber, polymer, and composite industries seeking to enhance filler-matrix adhesion, improve mechanical properties, and introduce controlled cross-linking or reactive sites.

Application

• Rubber Compounding: As a key coupling agent in silica-filled rubber (e.g., green tires), improving tear strength, abrasion resistance, and reducing rolling resistance.
• Polymer Modification: Functioning as a chain transfer agent (CTA) or cross-linker in radical polymerization processes, including reversible addition-fragmentation chain-transfer (RAFT) polymerization.
• Surface Treatment: Modifying the surface of silica, glass, minerals, and other fillers to improve their compatibility and dispersion within organic polymer systems.
• Adhesive & Sealant Formulations: Enhancing the bonding performance and durability of adhesives and sealants, particularly for challenging substrates.
• Composite Materials: Improving the interfacial adhesion between reinforcing fibers (e.g., glass) and the polymer matrix in advanced composites.
• Coatings: Serving as an additive to increase the adhesion of coatings to metallic or mineral surfaces and to modify coating network properties.

Basic Information

Product Name	S,S'-Di-3-Triethoxysilylpropyl Trithiocarbonate
CAS No.	94087-79-3
Molecular Formula	C17H38O6S3Si2
Molecular Weight	486.84 g/mol
Synonyms	3-(Triethoxysilyl)propyl 3-(triethoxysilyl)propyl trithiocarbonate; Bis(3-triethoxysilylpropyl) trithiocarbonate; Trithiocarbonic acid S,S'-bis(3-triethoxysilylpropyl) ester; Si-747 (common trade name); TESPT Trithiocarbonate; Silane coupling agent 747; Bis(triethoxysilylpropyl)trithiocarbonate; NXT Silane
EINECS	Contact for details

Quality Control

Our S,S'-Di-3-Triethoxysilylpropyl Trithiocarbonate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including assay and impurity profiling, to ensure consistent performance and high purity suitable for industrial applications. Certificates of Analysis (COA) detailing specific batch results are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Clear to pale yellow liquid
Identification (IR)	Conforms
Assay (GC or HPLC)	≥ 95.0%
Refractive Index (n20D)	1.450 - 1.470
Density (g/mL, 20°C)	1.05 - 1.10

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