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Product Line: Catalysts & Auxiliaries

Bis(triethoxysilylpropyl) disulfide

CAS 56706-10-6

Molecular structure of Bis(triethoxysilylpropyl) disulfide

CAS · 56706-10-6

01

Product Overview

Bis(triethoxysilylpropyl) disulfide is a high-purity catalysts-auxiliary-agent supplied for industrial and specialty chemical applications. Contact our team for specifications, packaging options and lead times.

02

Product Specifications

Appearance: Light yellow to yellow transparent liquid
Density (20℃): 1.020-1.045 g/cm³
Refractive index (25℃): 1.440-1.480
Flash point: 100℃ min.
Ethanol content: 0.5% max.
Viscosity (20℃): 12 mPa·s max.
Sulfur content: 13.5-15.5%
S2 content: 72.5-77.5%
S3 content: 12.5-22.5%
S4 content: 2.5-7.5%
The content of S5-S8: 6.5% max.
Average sulfur chain length: 2.25-2.45%
Free sulfur: 0.1% max.
Chlorine content: 0.4% max.
Impurity: 3.0% max.
03

Applications

1. Rubber and Tire Industry

Used as a silane coupling agent to improve the bonding between silica fillers and rubber matrices.

Enhances mechanical strength, abrasion resistance, and rolling resistance in tires.

Improves durability and fuel efficiency in automotive tires.

2. Composite Materials

Acts as a compatibilizer in silica-filled polymer composites, enhancing filler dispersion and adhesion.

Used in silicone and epoxy resin systems to improve crosslinking and material properties.

3. Adhesives and Sealants

Incorporated into adhesives to enhance bonding between organic polymers and inorganic substrates.

4. Coatings

Enhances durability, adhesion, and chemical resistance of coatings applied on various surfaces.=

04

Benefits

Improved Filler-Matrix Interaction: Enhances mechanical properties and wear resistance.

Better Dispersion: Promotes uniform distribution of inorganic fillers in polymers.

Enhanced Durability: Improves heat resistance, aging, and chemical stability.

Versatility: Compatible with various polymers including natural rubber, styrene-butadiene rubber, and others.

05

Conclusion

Bis(triethoxysilylpropyl) disulfide (CAS 56706-10-6) is a key organosilane coupling agent used primarily in the rubber, tire, and composite industries to enhance bonding between inorganic fillers like silica and organic polymers. Its use leads to improved mechanical performance, durability, and overall quality of advanced materials.

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