Bis [3-(triethoxysilyl)propyl] disulfise
Bis[3-(Triethoxysilyl)propyl]disulfide is a versatile silane coupling agent with multiple functional groups, widely used in the rubber industry. This additive improves rubber modulus and tensile strength, reduces compound viscosity, and saves energy during the processing. It is particularly effective for polymers with double bonds or rubber formulations containing hydroxyl fillers like silica, silicate, and clay.
Key Benefits:
✔ Enhances rubber properties – Increases modulus and tensile strength for superior durability.
✔ Reduces viscosity – Improves processing efficiency and energy savings.
✔ Effective with hydroxyl fillers – Ideal for rubber formulations with silica, silicate, clay, and other fillers.
| Chemical name | Bis [3-(triethoxysilyl)propyl] disulfise |
| Product Category | Sulfur-Containing Silane – Silane Coupling Agent |
| Structural Formula |  |
| CAS No. | 56706-10-6 |
| EINECS | 260-350-7 |
| Molecular formula | C18H42O6S2Si2 |
| Molecular weight | 474.82 |
| Density(25°C),g/cm3 | 1.020-1.060 |
| Total Sulfur | 15.3% |
| Boiling Point | 250°C |
| Flash Point | 129°C |
| Refractive Index(nD20) | 1.4500-1.4900 |
| Appearance | Light yellow transparent liquid. |
| Dissolvability | Be soluble in organic solvent. It is almost insoluble in water. |
| Uses | Bis [3-(triethoxysilyl)propyl] disulfise is a kind of silane coupling agent with multiple functional groups successfully used in rubber industry to improve modulus and tensile strength of rubber, reduce 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), acrylonitrile butadiene rubber (NBR), Ethylene propylene diene rubber (EPDM), etc. Comparing with Si69, the low-active disulfane group in Si75 provides more reliable scorch safty. |
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