| ≥1 piece |
can be made into many kinds of fine chemical products
Use:
It is raw material of preparing medical gallic acid, burnt gallic acid, sulfonamides. Preparing Gallic acid and burnt Gallic acid in chemical production, mud finishing agent in oil industry, in addition, used in producing leather tanning agent, mordant, rubber peptizer, protein medicinal preparation, alkaloid precipitating agent, Dressing inhibitor, wines clarifying agent, germanium extraction and blue-black ink and so on.
Properties:
Light yellow to light brown power with special smell, puckery flavor,soluble in 1-share water or ethanol, soluble in acetone, insoluble in chloroform or aether.gallotannin,the main content of Tannic acid , has the function of shrink, dehydration,insect prevention,anticorrosive to the combination of protein,tannin,ferric iron,chromium and aluminum salt or cupric forms complex ion with special color
Main technical index:
| No. | Index name/Kind | Industrial tannic acid |
| 1 | Tannin % ≥ | 81 |
| 2 | Insoluble substance % ≤ | 0.6 |
| 3 | Loss on drying % ≤ | 9 |
| 4 | Total colors ≤ | 2 |
| Type: |
Herbal Extract
|
Form: |
Powder
|
Packaging: |
Drum,plastic woven bag
|
| Place of Origin: |
Guangxi China (Mainland)
|
Grade: |
Industrial
|
Brand Name: |
Xinjing
|
| Purity:: |
80% min
|