Description

Bis-[m-(2-Triethoxysilylethyl)Tolyl]-Polysulfide is a specialized organosilicon polysulfide coupling agent. This compound is engineered to provide superior bonding and reinforcement in composite materials, particularly between inorganic fillers and organic polymer matrices. It is essential for manufacturers in the rubber, tire, and specialty plastics industries seeking to enhance product durability, mechanical strength, and resistance to environmental degradation.

Application

• As a key coupling agent in silica-filled rubber compounds for high-performance tire treads and sidewalls.
• To improve the dispersion and reinforcement of fillers in industrial rubber goods such as belts, hoses, and seals.
• In adhesive and sealant formulations to enhance adhesion to various substrates and environmental resistance.
• As a surface modifier for minerals and glass fibers in reinforced plastic composites.
• For the development of specialty elastomers with tailored properties for automotive and aerospace applications.
• In cable and wire insulation compounds to improve electrical properties and longevity.

Basic Information

Product Name	Bis-[m-(2-Triethoxysilylethyl)Tolyl]-Polysulfide
CAS No.	198087-81-9
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Bis(m-(2-triethoxysilylethyl)phenyl) Polysulfide; 1,3-Bis[(3-(triethoxysilyl)propyl]phenyl] Polysulfide; Silane Coupling Agent Si-75 (common trade name); Bis(3-(triethoxysilyl)propyl-m-tolyl) Polysulfide; Organosilane Polysulfide; m-Tolyltriethoxysilylpropyl Polysulfide; Rubber Coupling Agent; Sulfur-containing Silane
EINECS	Contact for details

Quality Control

Our production of Bis-[m-(2-Triethoxysilylethyl)Tolyl]-Polysulfide adheres to stringent quality management protocols. Each batch undergoes rigorous analytical testing to ensure consistency, purity, and performance in target applications. Certificates of Analysis (COA) documenting key parameters such as sulfur content, silane content, and refractive index are available upon request 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 degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Clear to pale yellow liquid
Identification (IR)	Conforms
Assay (Silane Content)	≥ 95.0%
Sulfur Content	Contact for details
Refractive Index (n20D)	Contact for details
Density (20°C)	Contact for details
Moisture (Karl Fischer)	≤ 0.5%

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