Raw material "Tannic acid" (dyeing auxiliary agent, rust inhibitor, adhesive, can cleaning agent, etc.)

In industrial applications, it is used as a dye fixative and preservative for nylon, boiler cleaning agents, rust inhibitors, and ink raw materials, and in food applications, it has a track record as an antioxidant and preservative.

The substances extracted from plant seeds, fruit shells, leaves, roots, etc., which can be used to turn animal hides into leather, are collectively referred to as "tannins" or "plant tannins." Among tannins, tannic acid is derived from gallnuts harvested from plants in the Anacardiaceae family and from oak galls harvested from plants in the Fagaceae family. Our company has been selling various types of tannic acid as a manufacturer of tannic acid and its derivatives for several decades. Tannic acid is used in industrial applications as a dye fixative for nylon, preservatives, boiler cleaning agents, rust inhibitors, and ink materials, and it also has a track record as an antioxidant and preservative in food applications. 【Properties】 ■ Easily soluble in water, alcohol, acetone, etc., and poorly soluble or insoluble in ether, chloroform, petroleum ether, benzene, etc. ■ Astringent properties ■ Reacts with proteins ■ Reacts with metals ■ Reducing power (antioxidant properties) ■ Deodorizing effect (adsorbs amines, etc.) ■ Interaction with dye molecules ■ Does not show a melting point, decomposes at 210°C, producing pyrogallol and carbon dioxide. The catalog can be downloaded from the "special site." *For more details, please refer to the PDF materials or feel free to contact us.

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