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TONSIL® bleaching earth for refining edible oils

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Edible oils - an indispensable food

Edible oils represent an indispensable ingredient in food and food preparation around the world. On a yearly and worldwide basis, around 157 million tons of edible oil are extracted from oil-rich seeds and fruit. These products are abundant in nutrients, have a long storage life, and are suitable for different culinary applications. 

Refining process stages

The oil is not merely pressed from the oil-rich material. It undergoes a multistage refining process to remove impurities, dyestuffs, and residues that can degrade the quality of the oil. 

Materials based on natural bentonite clay, like Clariant's TONSIL®play a decisive role in refining edible oils as they possess high absorption capacity. Once TONSIL® particles absorb the impurities and contaminants, they are filtered through by presses. 

Finally, the remaining quality-affecting compounds and contaminants are removed from the oil by the process of deodorization. This process stabilizes the shelf life and taste of edible oil.




  • 水泥是混凝土的主要成分,是世界上广泛使用的建筑材料。 但在整个生产流程中会产生大量的有害排放物。
  • 污染物排放包括细颗粒物、氮氧化物和氨、挥发性有机物、一氧化碳和硫氧化物。

Innovative solutions to tackle your needs

Clariant can reproduce your edible oil refining process on a laboratory scale and accurately tailor TONSIL® solutions to your needs. At the same time, our tailor-made formulations efficiently tackle the challenges of minimizing the level of 3-MCPD esters and glycidyl esters (GE) in palm oil depending on the actual feedstock.

Our TONSIL® range of bleaching earth or clay is based on over a century of experience in refining edible oils and fats. Today, Clariant remains a truly global player and thought leader for edible oil purification.

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