Tannic acid

Molecular formula:C76H52O46
Molecular weight:1700
CAS No.:1401-55-4
Extract from Gallnuts

Tannic acid
Formula:C76H52O46
Appearance: Light yellow or light brown powder.
(a) Industrial Tannic acid
Purity:81% min or 83% min
Moisture: 9.0%%max
Water insoluble: 0.6% max
Color: 2.0 max
(b) Food grade Tannin:light yellow powder (up to standard of FDA “Food chemical standard”(Version 3rd),The United States food chemical code standards(1981),UAS FCC-IV STANDARD)

Purity:93% min
Drying loss: 9% max
Loss on ignition :0.2% max
As: 3ppm max
Pb: 0.004% max
Packing: Cardboard casket package,N.W25kg.

(c) Dyestuff grade Tannin 88%Min
(d) Medical grade Tannic acid

Purity: 90% min
Water insoluble matter: 0.2% max
Drying loss: 9% max
Loss on ignition: 0.2% max
Gallic acid content: 7% max
Color: 2.0 max
Packing: N.W25kg fiber drum.

(e) Beer use Tannin

Beer Glycation Tannin 95%min

Beer Brewing Tannin 97%min
(f) Electronic grade Tannin

Electronic grade Tannin 99%min

General Usage: raw material for making medical gallic acid, sulfonamide.
petroleum industry for making mud conditioner.
Leather industry for making tanning agent,dye mordant agent, color fixing agent, Fiber deodorization agent, synthetic dye.
Rubber industry for coagulator agent.
Medicine for protein agent,Alkaloids precipitation agent.
Brewery for clarifying agent.
Extract germanium and make blue-black ink.