Tannic acid
MF:    C76H52O46
MW:    1701.2
CAS:    1401-55-4
Tannic acid is pale yellow amorphous powders or loose, shiny scaly or spongy solids that turn black when exposed to air. Odorless, with a strong astringent taste.

Tannic acid is a clarifying agent, astringent enhancer, and aromatizer; tannin can be used in tanning, ink manufacturing, paper and silk sizing, boiler descaling, etc., and can also be used as mordant, beer and Clarifying agent for wine, coagulant for rubber, etc. Can be used in printing and dyeing, metallurgy, medicine and other industries,

The main functions of industrial Tannic acid are as follows:
As raw materials of gallic acid and pyrogallic acid.
mordant. Used for fiber fixation or dyeing, as a basic dye.
Ore flotation agent. Rare metal smelting, extract germanium from lead-zinc ore or soot, extract rare metals such as thorium and polonium from solution, and extract lead and copper from chalcopyrite.
Conversion coatings. Aluminum and its alloy plate, steel, copper, zinc surface anti-corrosion, etc.
Food additives. Such as food antioxidants, beverage clarifiers, advanced inks and inks.
Drilling mud diluent.
Synergist. Synthesis of 2,4-diamino-5-(3,4,5-trimethoprimam), referred to as TMP or sulfonamide synergist.
Deodorant. Used in refrigerators, warehouses, toilets to remove other odors.