Other name: Tannin, Chinese gall tannic acid.
Mol. form and Mol. wt.: C76H52O46 1434~1701.18
Description: From light yellow to light brown powder, with a peculiar smell and very astringent taste; soluble in a portion of water and alcohol ; soluble in acetonel ; insoluble in chloroform and ether.
Specification: Comply with food Chemicals canonical of U.S. Food and drug Administration(ver 3), U.S. Food Chemicals Codex (1981) standard and U.S.A. FCC-IV standard.
Technical data:
Purity % ≥92
Loss on drying % ≤9
Residue on ignition % ≤0.2
Arsenic ppm ≤3
Heavy metal ppm ≤20
Tree gum or dextrin test up to standard
Resin test up to standard
Usage: Mainly used as clarifier of beer, wine and low-proof vino; also used in food processing of pineapple-proteinase and so on.
Storage: Keep in airtight container.
Packing: circinal-paper barrel with plastic bag inside, N.W. 25kg/bag.