Bis[3-(triethoxysilyl)propyl]tetrasulfise
Bis[3-(Triethoxysilyl)propyl]tetrasulfide is a multifunctional silicone rubber additive widely used in the rubber and tire industry. This versatile compound enhances rubber performance by improving modulus, tensile strength, and viscosity, while reducing energy consumption during processing.
Key Benefits:
✔ Improves rubber properties – Increases modulus and tensile strength for better durability and performance.
✔ Reduces viscosity – Enhances processing efficiency and reduces energy costs.
✔ Tire industry applications – Ideal for improving rubber compounds used in tire manufacturing.
| Chemical name | Bis[3-(triethoxysilyl)propyl] tetrasulfise |
| Product Category | Sulfur-Containing Silane – Silane Coupling Agent |
| Structural Formula |  |
| CAS No. | 40372-72-3 |
| EINECS | 254-896-5 |
| Molecular formula | C18H42O6S4Si2 |
| Molecular weight | 538.95 |
| Density(25°C), g/cm3 | 1.060-1.100 |
| Total Sulfur | 22% |
| Boiling Point | 250°C |
| Flash Point | 106°C |
| Refractive Index(nD20) | 1.4600-1.5000 |
| Appearance | Yellow or light yellow transparent liquid. |
| Dissolvability | Be soluble in organic solvent. It is almost insoluble in water. |
| Uses | Bis[3-(triethoxysilyl)propyl] tetrasulfise is a kind of silane coupling agent with multiple functional groups successfully used in rubber industry to improve modulus and tensile strength of rubber, to reduce the compound viscosity and save process energy consumption. It is especially applicable for polymers with double bond or rubber formulation with hydroxyl fillers. The suitable fillers include silica, silicate, clay, etc. The suitable rubber include natural rubber (NR), Butadiene styrene rubber (SBR), Isoprene rubber (IR), Butadiene rubber (BR), Acryloni-trile butadiene rubber (NBR), Ethylene propylene diene rubber (EPDM), etc. |
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