Egesil Kimya Sanayi ve Ticaret A.S. is a Turkish chemical company headquartered in Istanbul that manufactures precipitated silica.
Established in 2002 as a joint venture, it is 51 percent owned by Evonik and operates a production site in Adapazarı, Turkey.
The company supplies precipitated silica primarily for tire, rubber, and other industrial applications to customers in Turkey, Europe, and other regions.
In 2025, the Adapazarı plant achieved ISCC Plus certification, enabling commercial production of circular silica grades under Evonik's ULTRASIL brand.
Also known as Egesil Kimya A.Ş. and Egesil Kimya Sanayi ve Ticaret A.Ş..
Circular precipitated silica from ISCC Plus‑certified feedstock for tire and rubber applications; mass-balance verified and now commercially produced in EMEA.
