Bis[3-(triethoxysilyl)propyl]tetrasulfide, S 22.3% (typical)
Bis[3-(triethoxysilyl)propyl]tetrasulfide, S 22.3% (typical)
Bis[3-(triethoxysilyl)propyl]tetrasulfide, S 22.3% (typical)
Bis[3-(triethoxysilyl)propyl]tetrasulfide, S 22.3% (typical)
Thermo Scientific Chemicals

Bis[3-(triethoxysilyl)propyl]tetrasulfide, S 22.3% (typical)

Coupling/cross-linking agent for precious metals | CAS: 40372-72-3 | C18H42O6S4Si2 | 538.94 g/mol
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Catalog number 042410.14
also known as 042410-14
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25 g
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Price (USD)
109.65
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Online exclusive
Ends: 30-Jun-2026
129.00
Save 19.35 (15%)
Each
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Chemical Identifiers
CAS40372-72-3
IUPAC Name4,4,15,15-tetraethoxy-3,16-dioxa-8,9,10,11-tetrathia-4,15-disilaoctadecane
Molecular FormulaC18H42O6S4Si2
InChI KeyVTHOKNTVYKTUPI-UHFFFAOYSA-N
SMILESCCO[Si](CCCSSSSCCC[Si](OCC)(OCC)OCC)(OCC)OCC
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SpecificationsSpecification SheetSpecification Sheet
Appearance (Color)Clear yellow to brown
FormLiquid
Assay from Suppliers CofASulfur, S: ≥22.0%
Bis[3-(triethoxysilyl)propyl]tetrasulfide is used in radial tires, rubber tire treads, carcass, tire walls, solid rubber tires and other rubber products. It acts as a chemical intermediate and as a cross linking agent. Furthermore, it acts as a coupling agent used to chemically modify silica surface. In addition, it serves as a curing agent for good heat aging.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

RUO – Research Use Only