Chemical Name:Triethoxysilylpropyl Tetrasulfide (Si69 Liquid)
CAS No.:40372-72-3
Product Categories:Organic Chemistry
Molecular Formula
Formula Weight:
Appearance:Colorless transparent liquid
Packaging Method:25KG/200L Plastic Drum
Type Of Transportation:By Air/By Sea/By Train/By Express
Sample:Available
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Product Description Of
Density (25°C): 1.080–1.110 g/cm³
Refractive Index (25°C): 1.470–1.478
Flash Point: ≥105 °C
Total Sulfur Content: 22.0% typical
Purity: ≥95.0%
Solubility: Soluble in ethanol, toluene, xylene and rubber oils; insoluble in water. Moisture sensitive, easy to hydrolyze in humid air.
Chemical Characteristics
Si69 is a bifunctional sulfur-containing silane coupling agent. It contains hydrolyzable triethoxysilyl groups and reactive tetrasulfide bridge structure.
Ethoxy groups hydrolyze to bond with hydroxyl groups on inorganic fillers such as silica, clay and talc. The tetrasulfide group reacts with rubber molecular chains during vulcanization, forming strong chemical linkage between inorganic filler and rubber matrix. It has high sulfur activity, excellent reinforcement and good filler dispersion effect.
Chemical Properties Of
Safety Information Of
Product Application Of
Footwear: Improves abrasion resistance, cut resistance, compression resistance and flexing property.
Rollers: Enhances abrasion resistance, aging resistance, load capacity and processability; reduces water absorption and hysteresis.
Mechanical casting products: Boosts modulus and thermal aging resistance, improves dynamic performance, and reduces swelling in viscous solvents.
Hoses: Enhances surface abrasion resistance, modulus, thermal aging resistance and adhesion between reinforcements.
Tires: Increases abrasion resistance, reduces hysteresis, boosts modulus, maximizes adhesion; improves processability, tread wear, thermal cracking, carcass‑filler adhesion, and cushion layer bonding.
Flat belts: Improves abrasion resistance and anti‑reversion performance; lowers cost by replacing carbon black with clay; enhances tire cord adhesion, flex life and modulus.
V‑belts: Increases modulus, abrasion resistance and flex life; improves adhesion to reinforcing materials.
Packaging Method Of
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