Chemical Name: Bis[3-(triethoxysilyl)propyl]tetrasulfide

Chemical Name


Structural Formula


Physical Indicators

CAS NO.: 40372-72-3 Appearance: Light yellow to yellow transparent liquid Solubility: Soluble in most organic solvents, hydrolyzed in water Boiling point: N.A Flash point (closed cup): ≥ 100 ℃ Sulfur content: ≥ 22.0% Density (20 ℃): 1.08 ± 0.01 Refractive index (nD25): 1.480-1.495


It‘s widely used in rubber products such as the tread, carcass, outer wall, and solid rubber roller surface of radial tires and their rubber tires. Its application has improved the physical and mechanical properties of rubber, significantly improving tensile strength, tear resistance, wear resistance, and reducing permanent deformation. At the same time, it can also reduce the viscosity of the rubber material and improve processing performance. Especially suitable for vulcanized rubber systems with carbon black, white-carbon, or silicate as reinforcing agents, its suitable fillers include white-carbon, talc powder, clay, mica powder, clay, etc., and its suitable polymers include NR, IR, SBR, BR, NBR, EPDM, etc.


5kg/pot, 10kg/pot, 25 kg/barrel, 200kg/barrel, 1000kg/IBC, etc

Storage Conditions

Cool, ventilated, and dry


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