Our History

Zeochem, a manufacturer of high-quality molecular sieves, chromatography gels and deuterated compounds, was established more than 200 years ago. With manufacturing facilities in Rüti, Switzerland; Louisville, Ky., USA; Donghai, China; and Zvornik, Bosnia and Herzegovina, we offer customers a wide range of high-performance products and provide coordinated global support.

At Zeochem, we believe our tradition obliges us to maintain the standards set by the Schnorf brothers and to keep growing the company to ensure the future for our customers, our employees and our founders … the Schnorf family.

  • 1818
    The Schnorf brothers set up a chemicals factory in Uetikon on Lake Zurich and begin to produce sulfuric acid, iron and copper sulfates. The factory is steadily enlarged over the subsequent decades by reclaiming land from the lake, and the company expands into soda and fertilizer production.
  • 1881
    The Schnorf family diversifies, acquiring the Perlen paper factory (founded in 1872) as a related field within the chemical-technical process industry
  • 1899
    The company “Gebrüder Schnorf” is converted into a joint stock company. By the turn of the century, the chemicals factory is the biggest in Switzerland with a workforce of some 200 personnel. The company has a 50% share of the Swiss sulfuric acid market and a 25% share of its fertilizer market. It is also the only supplier of salt, saltpeter and mixed acids.
  • 1939
    New manufacturing unit for silica gels.
  • 1971
    The CPH Chemie + Papier Holding AG located in Lucerne is formed.
  • 1973
    Manufacturing unit for molecular sieves is added.
  • 1979
    Zeochem is founded as a joint venture between Chemische Fabrik Uetikon AG and United Catalysts, a subsidiary of Süd-Chemie, in Louisville, Ky., USA, with a new manufacturing unit for zeolites.
  • 1993
    ISO 9001 certificate is awarded.
  • 1997
    CU Chemie Uetikon AG buys out Sud Chemie’s shares in United Catalysts and founds Zeochem LLC in Louisville Ky., USA.
  • 2002
    CU Chemie Uetikon AG spins off the zeolite and silica gel businesses into a new entity, Zeochem AG.
  • 2015
    The CPH Group acquires one of China’s leading manufacturers of molecular sieves, Jiangsu ALSIO Technology of the Jiangsu Feixiang Group.
  • 2017
    Zeochem acquires Armar, manufacturer and distributor of deuterated solvents.
  • 2017
    New production facility opens in Bosnia and Herzegovina to produce molecular sieves, chromatography gels and specialty zeolites.
  • 2018
    Zeochem moves to its new global headquarters in Rüti near Zurich in Switzerland. The central functions for the production of deuterated solvents are also located on the premises.


Investing in personal and professional development is one way our management team is committed to the success of Zeochem’s most valuable asset – its employees!