Today, Siridion® is the world’s leading chlorosilane brand for the optical fibers industry. As the partner of choice to this demanding industry, Evonik Industries manufactures Siridion® products of unrivaled purity. Evonik operates dedicated chlorosilane manufacturing facilities at different sites to reliably deliver and to ensure our purity. Siridion® is also extensively used as key raw material for silicon-based solar cells. The higher the purity of the chlorosilanes used to manufacture solar-grade silicon, the higher the efficiency of the solar cells will be to convert sunlight into energy. This is what Siridion® offers.

One of the main challenges of chlorosilanes is to ensure the highest level of purity over time. Evonik Industries has been manufacturing Siridion® chlorosilanes for decades at the highest levels of quality and reliability. Siridion® is synonymous with "quality delivered on time". Our customers can count on us to meet their specifications and their deadlines. Every time and everywhere.