Tannic Acid is a light yellow or light brown powder. It is mainly used for tanning. It can also be applied to the medicine, ink, printing, rubber and metallurgical industries as well as water treatment, etc.
ITEMS | SPECIFICATIONS | ||
Industrial Grade | Pharmaceutical Grade | Food Grade | |
Appearance | Yellow powder | Light yellow powder | Light yellow powder |
Content | ≥81% | ≥90% | 93%-98% |
Loss on drying | ≤9% | ≤9% | ≤9% |
Residue on ignition | — | ≤1% | ≤1% |
Heavy metal | — | ≤30ppm | ≤20ppm |
Packaging and storage:
1. In kraft paper bag or cardboard drum, net weight 25kg.
2. Avoid moisture and light, sealed tightly, no contact with metal.
Application:
1. Tannic Acid is used for the extraction of germanium, the manufacture of acid iron ink, metal rust removal, and the raw material of mud treatment agent for oil drilling. It can also be used as leather tanning agent, mordant, rubber coagulant, protein agent, alkaloid precipitation agent.
2. Medicinal Tannic Acid has antibacterial, enzyme-removing and astringent effects.
3. Used in cosmetics, food antioxidants, clarifying agents for low alcohol alcohols, oil antioxidants, and also used in bromelain food processing.