Tannic Acid/Tannin
Detailed Product Description
Synonms : Tannic acid, Tannin, Gallotannic acid.
Molecular Formula: C76H52O46
Molecular Weight: 1701.18
Application: This product is widely used in smelting if germanium ,manufacuture of Iron ink metal corrosion-resistance,claricant of beer or wine,slime treatment of petroleum drilling and raw material of pharmaceutical industry
Storage :Tannic acid should be kept in well-closed container.
Package: 25kg packed in Polywoven Bags
Main technical index :
Item | Industrial grade | Grade for dye | Food grade |
Assay≥ | 81.0% | 82.0% | 92.0% 94.0% 97.0% |
Insoluble matter≤ | 0.6% | 0.15% | 0.1% |
Drying loss≤ | 9.0% | 9.0% | 9.0% |
Color of solution≤ | 2.0% | 1.2 | 1.2% |
Residue on ignitin≤ | 1.0% | ||
As≤ | 3PPm | ||
Pb≤ | 10 PPm | ||
Heavy metals(Pb) ≤ | 20 PPm | ||
Gums or Dextrine | Passes test | ||
Gallic acid≤ | 7% |
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