Si 69 Equivalent & Alternative
·4 min read
Si 69 — Technical Profile
Si 69 is a specialty chemical product manufactured by Evonik Industries AG (Germany). Benchmark since 1971. Chemical name: Bis(triethoxysilylpropyl)tetrasulfide (TESPT).
Key Specifications
| Property | Specification |
|---|---|
| Sulfur Content | 22.5% |
| Functional Group | Polysulfide (avg S₄), ethoxy |
| CAS Number | 40372-72-3 |
Applications
- Green tire tread
- Industrial rubber
- Shoe soles
Looking for a Si 69 Alternative?
SEMITECH Silanes offers functionally equivalent grades that match the performance profile of Si 69. Our products are manufactured to the same international quality standards with competitive pricing and reliable supply from China.
Why choose SEMITECH Silanes as your Si 69 alternative:
- Equivalent performance — matched specifications and application behavior
- Competitive pricing — 20–40% cost advantage vs. European manufacturers
- Reliable supply — direct from manufacturer, shorter lead times
- Technical support — formulation assistance and sample testing
- Flexible MOQ — from trial quantities to container loads
Request a Sample
Ready to evaluate our Si 69 equivalent? Contact us for:
- Free sample (typically 1–5 kg)
- Full technical data sheet (TDS)
- Certificate of Analysis (CoA)
- Formulation guidance for your specific application
Si 69 is a registered trademark of Evonik Industries AG. SEMITECH Silanes products are independently developed alternatives, not produced by or affiliated with Evonik.