双-[3-(三乙氧基硅)丙基]-四硫化物 (CAS No.40372-72-3)

Product Name:Bis(3-(triethoxysilyl)propyl) tetrasulfide

English Name:Bis(3-(triethoxysilyl)propyl) tetrasulfide

CAS No.:40372-72-3

Aliases:Silane coupling agent SI69, Si-69, Bis(γ-(triethoxysilyl)propyl) tetrasulfide, 3,3'-Tetrathiobis(propyltriethoxysilane), 4,4',15,15-Tetraethoxy-3,16-dioxa-8,9,10,11-tetrathia-4,15-disilaoctadecane

Molecular Formula:C18H42O6S4Si2

Physical Properties:Light yellow to light brown transparent liquid with a slight ethanol odor; soluble in ethanol, acetone, benzene, toluene and other organic solvents, insoluble in water; flash point ≥100°C; density 1.080-1.090 g/cm³ at 20°C; heating loss ≤2.5% at 105°C.

Uses:Used as a multifunctional organosilane coupling agent in the rubber industry, especially for tire rubber. It improves the elastic modulus and tensile strength of rubber, significantly enhances abrasion resistance and compression properties, while reducing viscosity and saving processing energy. Suitable for rubber compounds containing double-bond polymers with hydroxyl fillers such as silica, silicates and chalk; applicable rubbers include NR, SBR, IR, BR, NBR and EPDM.

Technical Specifications:

Appearance: yellow transparent liquid

Flash point: ≥100°C

Sulfur content: 22.7±0.8%

Density (20°C): 1.080-1.090 g/cm³

Heating loss (105°C): ≤2.5%

Impurity content: ≤4.0%