Super pure tannic acid

Synonym: Tannic acid Tannin Chinese gallnut tannic acid
Molecular formula and weight: C76H52O46=1701.18
CAS: 1401-55-4.

Characteristic: Light yellowish to light brownish powder, soluble in 1 share of water or ethanol, soluble in acetone, insoluble in chloroform or ethyl ether

Main specifications

Items Standard Result
Fe ppm ＜4 ＜3
Chloride ＜3 ＜2
Sulphate ppm ＜6 ＜5
Ignition residue % ＜0.1 ＜0.03
Heavy metal ppm ＜6 ＜5
Content(dry substance)% ≥99 ≥99.5

Application: Application: the material of electronics chemistry, manufacturing tannin iron ink, anti-rust of metal, the raw material of pharmaceutical industrial.
Packing: 500g/sack, 20Kg/drum