Tonsil bleaching earth is a type of activated clay, usually derived from bentonite, that has been treated with acid to enhance its adsorptive and decolorizing properties.
It is widely used in industries such as:
Edible oil refining – to remove pigments, gums, and impurities.
Petrochemicals – for purifying lubricating oils, paraffins, and waxes.
Food and beverages – for clarifying products like wine and juices.
Key points:
Mainly composed of montmorillonite clay.
Works through adsorption, trapping unwanted color bodies and contaminants.
Also known as Fuller’s earth in some contexts.
Improves clarity, stability, and quality of oils and liquids.