| Customization: | Available |
|---|---|
| CAS No.: | 1401-55-4 |
| Formula: | C76h52o46 |
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Tannic acid (CAS Reg. No. 1401-55-4), or hydrolyzable gallotannin, is a complex polyphenolic organic structure that yields gallic acid and either glucose or quinic acid as hydrolysis products. It is a yellowish-white to light brown substance in the form of an amorphous, bulky powder, glistening scales, or spongy masses.
| Item | Specification |
| Content (%) | ≥93.0% |
| Appearance | Amorphous light yellow powder |
| Odor | Practically odorless |
| Taste | Neutral/Slight astringent taste |
| Solubility | Very soluble in water, freely soluble in acetone, in alcohol |
| Identification A | Conform |
| Identification B | Conform |
| Identification C | Conform |
| Sulphated Ash(%) | ≤ 0.1% |
| Loss On Drying (%) | ≤9.0% |
| Residue On Ignition (%) | 1.0% |
| Heavy Metal(Pb ppm) | <10 ppm |
| Arsenic (ppm) | <3 ppm |
| Lead (ppm) | <2 ppm |
| Hg ((ppm) | <1 ppm |
| Gums, Dextrin Test | No turbidity |
| Resins Test | No turbidity |
| Gallic Acid (%) | ≤4.0% |
| Density G/CM3 | 0.30-0.45 |
| PH (1% in water) | 3-4 |
| Microbiology Total Plate Count: Yeast &Mold: E.Coli: S. Aureus: Salmonella: |
<100 cfu/g <100 cfu/g Negative Negative Negative |
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