Description

4,4,14,14-Tetraethoxy-3,15-Dioxa-8,9,10-Trithia-4,14-Disilaheptadecane is a specialized organosilicon compound with a unique molecular architecture integrating silicon, sulfur, and oxygen functionalities. This structure is critical for its role as a high-performance coupling agent and crosslinker in advanced material science. It is essential for manufacturers in the rubber, polymer, and adhesive industries seeking to enhance material properties such as thermal stability, mechanical strength, and adhesion to inorganic surfaces. The compound, identified by CAS No. 56706-11-7, represents a key intermediate for developing sophisticated silane-based additives.

Application

• As a silane coupling agent to improve the bond between organic polymers and inorganic fillers like silica, glass, or minerals.
• Key intermediate in the synthesis of specialty polysulfides and sulfur-containing silanes for high-performance elastomers.
• Crosslinking agent in the production of silicone rubbers and sealants to enhance heat resistance and durability.
• Surface modification agent for nanoparticles and fillers to promote better dispersion and compatibility within polymer matrices.
• Component in adhesive and coating formulations to boost adhesion to difficult substrates like metals and glass.
• Used in R&D for developing novel hybrid organic-inorganic materials (ORMOSILs) with tailored properties.

Basic Information

Product Name	4,4,14,14-Tetraethoxy-3,15-Dioxa-8,9,10-Trithia-4,14-Disilaheptadecane
CAS No.	56706-11-7
Molecular Formula	C17H40O6S3Si2
Molecular Weight	488.85 g/mol
Synonyms	Bis(triethoxysilylpropyl) Trisulfide; Si 69; TESPT; 3,3'-Trisulfanediylbis(1-propanol) 1,1'-diethyl ether, 1,1',1''-(silanetriyl)tris-; Trisulfide, bis-(3-triethoxysilylpropyl)-; Coupling Agent Si-69; NXT Silane; XTESPT
EINECS	Contact for details

Quality Control

Our production of 4,4,14,14-Tetraethoxy-3,15-Dioxa-8,9,10-Trithia-4,14-Disilaheptadecane adheres to stringent quality management protocols. Each batch is analyzed to ensure it meets precise specifications for purity, sulfur content, and functional group integrity. Certificates of Analysis (COA) documenting results from GC, HPLC, and titration methods are provided 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after each use to prevent degradation from atmospheric moisture. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Clear to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 95.0%
Sulfur Content	22.0 - 24.0 %
Refractive Index (n20/D)	1.485 - 1.495
Density (20°C)	1.07 - 1.09 g/mL
Moisture (KF)	≤ 0.5%

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