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Functional Minerals

Bentonite based products from food to foundry

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Due to its high surface area and strong binding properties, Bentonite is a true all-rounder that enhances a wide range of products and processes in various industries from food to foundry.

As a leading provider of specialty products based on Bentonite, the business unit Functional Minerals defines the entire value chain: from exploration, mining, processing and refinement to tailored industry and customer specific solutions.

Our global network of mines, secure supply, efficient logistics and unparalleled application service is ready for your needs on 24 production sites worldwide – and looks back on over 100 years of experience.

Clariant’s sustainability approach is an increasingly important aspect for our customers across the globe. Sustainability is a strategic pillar of Clariant's business strategy. And it doesn't stop with our products. We are committed to re-naturalizing our bentonite mines, even with a higher level of biodiversity.

Our solutions

  • Oil Purification

    TONSIL® bleaching clays for efficient purification.

  • Foundry Additives

    GEKO™ and ECOSIL™ molding sand additives ensure superior quality precision castings and highest foundry productivity.

  • Civil Engineering

    Natural BENTONIL® and MONTIGEL® drilling additives allow civil engineers to put the most daring tunneling and foundation projects into practice.

  • Feed Additives

    Clariant's TOXISORB™ product line is a range of specially developed feed additives that help bind fungal mycotoxins and help prevent them from being resorbed into animals bodies, where they may produce damaging effects. According to the United Nations Food and Agriculture Organization, 25% of feed worldwide is contaminated with different mycotoxins. Mycotoxins are poisonous compounds which are formed by various mold fungi belonging to the species of Aspergillus, Penicillium and Fusarium. These globally found fungi grow on grain and crops and can occur either before/after harvest, during storage, on/in the food itself often under warm, damp and humid conditions. Clariant TOXISORB™ product line is a range of specially developed feed additives that help bind fungal mycotoxins and help prevent them from being resorbed into animals bodies, where they may produce damaging effects.

  • Additives for paper industry

    Clariant's paper additives OPAZIL®, OPAZIL® FFR and PITCHBENT® offer an innovative and cost-reducing solutions for reliable and productive papermaking: from pulper to reel.

  • Waste Water Treatment

    Das hocheffiziente Fällungsmittel SÜDFLOCK® K2 ermöglicht kommunalen und industriellen Kläranlagen auch die strengsten Umweltauflagen zu erfüllen.

  • Clay Specialties

    Bentonite-based specialized solutions increase quality and productivity of a wide range industries, from pharmaceuticals to ceramics.

  • Detergent Additives

    LAUNDROSIL®, LAUNDROCLIN® and LAUNDROBRIGHT® additives considerably enhance formulation and production flexibility for the ever-more demanding detergent industry.

  • PVC Stabilizers

    SORBACID® hydrotalcites enable sustainable and environmentally friendly heavy metal free PVC stabilizer formulations.

  • BTX Catalysts

    Olefin Removal in Aromatic Complexes with TONSIL ® APT and TONSIL ® CO catalysts

  • Kerosene and Jet Fuel Purification

    TONSIL ® Jet Supreme adsorbents have been establishing an outstanding status around the world.


Our expertise

Discover the entire production process

Sustainable mining and
production in China


Sustainable mining and
production in Europe



October 31, 2022
Clariant completes acquisition of BASF’s U.S. Attapulgite business assets
October 31, 2022

Clariant today announces that it has completed the acquisition of BASF’s U.S. based Attapulgite business assets for USD 60 million in cash. Structured as an asset deal, the transaction includes the transfer of land as well as mining rights, the processing facility, and inventories, which will be integrated into Clariant’s Functional Minerals business. 



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Building Functional Materials Headquarter Munich in 3D

Functional Minerals Headquarters

Clariant Produkte (Deutschland) GmbH/Clariant SE
Business Unit Functional Minerals
Arabellastraße 4a
81925 München

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