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

Description

Coupling/cross-linking agent for precious metals | CAS: 40372-72-3 | C18H42O6S4Si2 | 538.94 g/mol

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.

Specifications

Chemical Identifiers

• CAS: 40372-72-3
• Molecular Formula: C18H42O6S4Si2
• Molecular Weight (g/mol): 538.94
• MDL Number: MFCD00053751
• InChI Key: VTHOKNTVYKTUPI-UHFFFAOYSA-N
• Synonym: bis 3-triethoxysilyl propyl tetrasulfide, 4,4,15,15-tetraethoxy-3,16-dioxa-8,9,10,11-tetrathia-4,15-disilaoctadecane, unii-j98v193zry, bis 3-triethoxysilyl propyl tetrasulphide, 3,16-dioxa-8,9,10,11-tetrathia-4,15-disilaoctadecane, 4,4,15,15-tetraethoxy, silane coupler kh-858, acmc-1akw5, dsstox_cid_9362
• PubChem CID: 162012
• IUPAC Name: triethoxy-[3-(3-triethoxysilylpropyltetrasulfanyl)propyl]silane
• SMILES: CCO[Si](CCCSSSSCCC[Si](OCC)(OCC)OCC)(OCC)OCC

• Density: 1.074 g/mL
• Boiling Point: 250°C (decomposition)
• Flash Point: 91°C (196°F)
• Quantity: 5 g
• Solubility Information: Miscible with toluene,primary alcohols,ketones,benzene,chlorinated hydrocarbons,acetonitrile,dimethylformaminde and dimethysulfoxide. Immiscible with water.
• Formula Weight: 538.94
• Concentration or Composition (by Analyte or Components): S 22.3% (typical)
• Physical Form: Liquid
• Chemical Name or Material: Bis[3- (triethoxysilyl)propyl]tetrasulfide

Safety and Handling

Hazard Category	H227-H315-H319-H335
Hazard Statement	GHS H Statement H315-H319-H335-H227 Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation. Combustible liquid.
Precautionary Statement	P210-P235-P261-P264b-P271-P280-P302+P352-P304+P340-P305+P351+P338-P312-P332+P313-P362-P370+P378q-P501c
EINECSNumber	254-896-5
TSCA	Yes
Recommended Storage	Ambient temperatures

SDS

RUO – Research Use Only