High Quality 93% Tannic Acid Powder CAS 1401-55-4

• CAS No.: 1401-55-4
• Formula: C76h52o46
• EINECS: 215-753-2
• Appearance: Powder
• Colour: Yellow
• Melting Point: 218 ºC
• Model NO.: YT0175
• Specification: 93%
• Trademark: YTBIO
• Origin: China

Product Description

Tannic acid is an organic compound with a chemical formula of C76H52O46. It is yellow or brownish-yellow powder. When its aqueous solution meets iron salt solution, it turns blue-black. Adding sodium sulfite can delay the discoloration. In industry, tannic acid is widely used in tanning leather and making blue ink. Tannic acid coagulates proteins. People chemically treat raw pigskin and raw cowhide with tannic acid, which can coagulate the soluble protein in the raw hide. As a result, the raw hide, which would have rotted and rotted after a few days, turned into beautiful, clean, flexible, and durable leather.


Tannic acid is an astringent that can precipitate proteins and form insoluble complexes with alkaloids, glycosides and heavy metals. It can inhibit the activity of glycosidic transferase and the synthesis of glycosides to reduce the formation of dental caries. It can inhibit the activity of snake venom protein and has a strong detoxification effect on cobra and other toxins.


1. Tannic acid is used in the food industry as a food antioxidant and as a clarifying agent for low-alcohol wine and fruit wine.
2. Tannic acid is used in the cosmetics industry and used in skin care products for sun protection and skin brightening.
3. Tannic acid is used in the pharmaceutical industry and can be used to treat local bleeding.