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Si 75®

Technical Datasheet | Supplied by Evonik
Si 75® by Evonik is a bifunctional, sulfur containing organosilane. Acts as a reinforcing filler. It reacts with silanol groups of white fillers during mixing and with the polymer during vulcanization under formation of covalent chemical bonds. It has a higher temperature stability and therefore allows higher mixing temperatures. Si 75® imparts greater tensile strength, higher moduli, reduced compression set, increased abrasion resistance and optimized dynamic properties. Compatible with rubbers in combination with white fillers containing silanol groups. Application includes low rolling resistance tires. It has a shelf life of 12 months.
Product Type
  • Fillers
  • Fillers > > silanol
Chemical Composition
Bis (triethoxysilylpropyl) disulfide
CAS Number

Compatiblity with other products

Find products that are predicted to be compatible with Si 75®.

This list of compatible products is generated out of estimated HSP values. A practical determination of these HSP values would provide higher certainty.
Learn more about Hansen Solubility Parameters (HSP) and their use in predictive formulation.

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