Bis[3-(triethoxysilyl)propyl] tetrasulfide , 90% , 40372-72-3

Synonym(s):
3,3′-Tetrathiobis(propyl-triethoxysilane);TESPTS

CAS NO.：40372-72-3

Empirical Formula: C18H42O6S4Si2

Molecular Weight: 538.95

MDL number: MFCD00053751

EINECS: 254-896-5

PRODUCT Properties

• Boiling point: 250 °C
• Density: 1.08 g/mL at 20 °C(lit.)
• refractive index: n20/D 1.49
• Flash point: 91°C
• storage temp.: 2-8°C, stored under nitrogen
• form: Liquid
• Specific Gravity: 1.095
• Appearance: Colorless to light yellow Liquid
• Water Solubility: Miscible with toluene, primary alcohols, ketones, benzene, chlorinated hydrocarbons, acetonitrile, dimethylformaminde and dimethysulfoxide. Immiscible with water.
• Hydrolytic Sensitivity: 7: reacts slowly with moisture/water
• BRN: 2062235
• InChI: InChI=1S/C18H42O6S4Si2/c1-7-19-29(20-8-2,21-9-3)17-13-15-25-27-28-26-16-14-18-30(22-10-4,23-11-5)24-12-6/h7-18H2,1-6H3
• InChIKey: VTHOKNTVYKTUPI-UHFFFAOYSA-N
• SMILES: CCO[Si](OCC)(OCC)CCCSSSSCCC[Si](OCC)(OCC)OCC
• CAS DataBase Reference: 40372-72-3(CAS DataBase Reference)
• EPA Substance Registry System: 3,16-Dioxa-8,9,10,11-tetrathia-4,15-disilaoctadecane, 4,4,15,15-tetraethoxy- (40372-72-3)

Description and Uses

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.

Safety

• Symbol(GHS): GHS07
• Signal word: Warning
• Hazard statements: H315-H319-H335
• Precautionary statements: P261-P271-P280
• Hazard Codes: Xi
• Safety Statements: 23-24/25
• WGK Germany: 1
• TSCA: Yes
• HS Code: 29309090