Description

4,4,15,15-Tetraethoxy-3,16-Dioxa-8,9,10,11-Tetrathia-4,15-Disilaoctadecane Reaction Products With Silica is a specialized organosilicon-sulfur compound chemically bound to a silica substrate. This product matters for its unique dual functionality, offering the coupling and crosslinking properties of a silane with the reinforcing and thixotropic characteristics of silica. It is primarily needed by formulators in the rubber and polymer industries seeking to enhance the mechanical properties, durability, and processing of high-performance elastomers and composites.

Application

• As a reinforcing agent and coupling agent in sulfur-cured rubber compounds, such as those used in tire treads and industrial belts.
• To improve the dispersion of fillers and reduce compound viscosity for enhanced processing in silicone and organic rubber formulations.
• As a key additive for developing high-strength, abrasion-resistant seals, gaskets, and hoses in automotive and aerospace applications.
• In the modification of adhesive and sealant systems to increase bond strength and environmental resistance.
• For the surface treatment of minerals and fillers to improve their compatibility and performance within polymer matrices.
• As a potential component in the development of specialty coatings requiring improved adhesion and mechanical properties.

Basic Information

Product Name	4,4,15,15-Tetraethoxy-3,16-Dioxa-8,9,10,11-Tetrathia-4,15-Disilaoctadecane Reaction Products With Silica
CAS No.	219916-65-1
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Bis(triethoxysilylpropyl)tetrasulfide silica reaction product; TESPT-silica reaction product; Si 69-silica blend; Coupling agent Si 69 on silica; 3,3'-Dithiodipropionic acid bis(3-triethoxysilylpropyl) ester silica adduct; Tetrasulfane, 1,1'-[1,6-hexanediylbis[(3-(triethoxysilyl)propyl]]]-, reaction products with silica; Organosilane-silica composite; Sulfur-bridged silane silica product
EINECS	Contact for details

Quality Control

Our production of 4,4,15,15-Tetraethoxy-3,16-Dioxa-8,9,10,11-Tetrathia-4,15-Disilaoctadecane Reaction Products With Silica adheres to stringent quality protocols to ensure batch-to-batch consistency and performance reliability. Each lot undergoes rigorous analytical testing, including assessment of key parameters like active content, sulfur content, and silica carrier properties. Certificates of Analysis (COA) documenting these specifications are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. This material is hygroscopic (moisture-sensitive) and must be stored in a cool, dry place with low humidity. Recommended storage temperature is 15-25°C. Keep the container tightly sealed when not in use to prevent moisture absorption, which can affect product performance.

Specification

Item	Specification
Appearance	Off-white to light tan powder or granules
Identification (IR)	Conforms
Assay (Active Content)	Contact for details
Silica Content	Contact for details
Sulfur Content	Contact for details
Loss on Drying	≤ 2.0%
Mesh Size	Customizable (e.g., 80-100 mesh)

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