Synonym: Tannic acid Tannin Chinese gallnut tannic acid
Molecular formula and weight: C76H52O46=1701. 18
CAS No.: 1401-55-4.

Property: Light yellowish to light brownish powder, soluble in 1 share of water or ethanol,

soluble in acetone, insoluble in chloroform or ethyl ether.

Standard: Conforming to Health Department WS-129(B) and USA Pharmacopoeia of 1990

edition.

Main specifications:
As: ≤3ppm
Solubility in water:  In conformity
Ignition residue, %: ≤0.2
Heavy metal: ≤30ppm
Gum and dextrin:  In conformity
Loss on drying, %: ≤9.0

Application: Tannic acid for medicine has the antiseptic, enzyme-eliminating and convergent

effects. Applied as antibiotics to treating tinea, eliminating toxic substances and stopping

diarrhea etc.
Packaging: In paperboard barrels of 25 kg Net each when exported.