Tannic Acid, also known as gallotannin or tannin, is a naturally occurring hydrolyzable polyphenol extracted from plant sources. It appears as a light yellow to light brown amorphous powder with a characteristic astringent taste and odorless profile when pure.
Tannic Acid is widely valued for its antioxidant, antimicrobial, astringent, and protein-precipitating properties.
Technical Specifications
| 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
- In kraft paper bag or cardboard drum, net weight 25kgs.
- Avoid moisture and light, sealed tightly, no contact with metal.
Benefits and Properties of Tannic Acid
Strong Antioxidant Activity:
Neutralizes free radicals and prevents oxidation.
Antimicrobial & Antiviral Effects:
Inhibits bacteria, fungi, yeasts, and certain viruses.
Astringent and Protein-Binding:
Forms protective layers on tissues and precipitates proteins for clarification.
Natural & Sustainable:
Plant-derived, biodegradable, and eco-friendly alternative to synthetic chemicals.
pH-Stable in Acidic Environments:
Ideal for low-pH formulations.
Key Applications of Tannic Acid
Food & Beverage Industry
Clarifying agent for beer, wine, and fruit juices (removes haze-forming proteins)
Flavor modifier and enhancer in soft drinks, tea, and frozen dairy
Natural antioxidant and preservative
Approved as a food additive (E181 in some regions) and GRAS by FDA
Pharmaceutical & Cosmetics
Astringent in topical treatments for minor burns, cold sores, diaper rash, and prickly heat
Stabilizer in formulations and drug absorption enhancer
Antimicrobial and anti-inflammatory agent in creams and ointments
Beverage Clarification (Brewing & Winemaking)
Effectively binds and precipitates excess proteins, improving clarity and stability without affecting taste when used at recommended levels
Industrial Uses
Leather tanning (traditional and eco-friendly vegetable and eco-friendly alternative)
Ink and dye mordant
Corrosion inhibitor for metals
Boiler anti-scaling agent and water treatment
Other Uses
Analytical reagent
Wood staining and textile processing
Frequently Asked Questions (FAQs)
What is Tannic Acid?
It is a specific commercial form of hydrolyzable tannin-a natural polyphenol extracted primarily from gallnuts, Tara pods, or sumac leaves.
Is it safe for food use?
Yes—the FDA recognizes it as GRAS for use as a flavoring agent, clarifier, and preservative in beverages, desserts, and meats at regulated levels.
What is Tannic Acid used for in beer and wine?
It clarifies beverages by binding to and precipitating proteins and polyphenols that cause haze, resulting in a brighter, more stable product.
Is Tannic Acid natural?
100% natural, derived from renewable botanical sources without synthetic modification.
Can Tannic Acid be used in pharmaceuticals?
Yes—in topical ointments, suppositories, and as an astringent/antidiarrheal component.
How should Tannic Acid be stored?
In airtight containers in a cool, dark place. It is hygroscopic and oxidizes in air, darkening over time.
Is Tannic Acid natural and eco-friendly?
Yes, it is 100% plant-derived and biodegradable. Modern sourcing from Tara pods (Peru) is sustainable and supports local communities.
Where can I buy high-quality Tannic Acid?
You can contact us via email [email protected] for offers and bulk orders.
