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Product name: Food-tannic acid
Molecular formula: C₇₆H₅₂O₄₆
Molecular weight: 1701.18
Structural formula:

Character: This product is light yellow to light brown powder, with special smell and astringent taste. Soluble in 1 part water or ethanol, soluble in acetone, insoluble in chloroform or ether.
Quality indicators: comply with the food and drug administration "Food Chemistry Specification" 5th edition and codex Alimentarius Standard; U.S. Food FC-IV standard.
To use: mainly used in cosmetics, food antioxidants, clarifiers of low alcohol, oil antioxidants, but also used in bromelain food processing and other aspects.
Storage: keep away from moisture and light and store sealed
Packing: cardboard drum for external use, plastic bag for inside, 25kg net per barrel.