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Project at a Glance Contents on the CD ROM
  • Tannic acid (also known as gallotannic acid, gallotannin, digallic acid or glycerite) is a plant polyphenol which is contained in roots, husks, galls and leaves of plants.
  • Tannins are non-crystallizable, amorphous compounds. They are soluble in water, ethyl alcohol, glycerol, acetone and in dilute alkalies. Their aqueous solution shows an acidic reaction and a sharp astringent taste.
  • Tannic acid is not a single constituent but a type of hydrolyzable tannin that contains several units of gallic or ellagic acids esterified with the glucosyl OH to produce complex tannin compounds. Its exact composition varies according to its source.
  • Tannic acid has strong astringent properties. It is used as an antidote in cases of alkaloidal poisoning as it precipitates alkaloids as tannate salts. It finds its uses in tanning, dyeing industries and for ink manufacture.
  • Tannin is an ideal candidate for commercial extraction since it finds a ready market in leather industry and ayurvedic medical prescriptions.
  • Terminalia arjuna is one of the major tannin yielding trees with tannin content of 22-24 percent in bark, 10-11 percent in leaf and 7-20 percent in fruit.
    Tannic acid is a specific commercial form of tannin, a type of polyphenol. Its weak acidity (pKa around 10) is due to these phenol groups in the structure.
  • Commercial tannic acid is usually extracted from any of the following plant part: Tara pods (Caesalpinia spinosa), gallnuts from Rhus semialata or Quercus infectoria or Sicilian Sumac leaves (Rhus coriaria).
  • Tannic acid (TAN-ik AS-id) is a pale yellow amorphous powder, shiny scales, or spongy material that gradually darkens when exposed to air. It is odorless but has a strong, bitter taste.
  • Tannins are a basic ingredient in the chemical staining of wood, and are already present in woods like oak, walnut, and mahogany.
  • Tannin occurs naturally in tea, coffee, oak, sumac bark and myrobalan.
  • Tannic acid can be applied to woods low in tannin so chemical stains that require tannin content will react.
  • The presence of tannins in the bark of redwood (Sequoia) is a strong natural defense against wildfire, decomposition and infestation by certain insects such as termites. It is found in the seeds, bark, cones, and heartwood.
  • Tannic acid is a common mordant used in the dyeing process for cellulose fibers such as cotton, often combined with alum and/or iron.
  • Tannic acid is used in the conservation of ferrous (iron based) metal objects to passivate and inhibit corrosion.
  • Tannic acid reacts with the corrosion products to form a more stable compound, thus preventing further corrosion from taking place. After treatment the tannic acid residue is generally left on the object so that if moisture reaches the surface the tannic acid will be dehydrated and prevent or slow any corrosion.
  • Use of tannic acid in food applications is far more widespread and significant amounts are used as process aids in beer clarification, aroma compound in soft drinks and juices.
  • Today tannic acid is still used in pharmaceutical applications to produce albumine tannate which is used as an anti-diarrhea agent.
  • Tannic acid is also used to produce tannate salts of certain anti-histamins and anti-tussives to impart increased stability or slow release properties to the API (active pharmaceutical ingredient).
  • In manufacturing, tannic acid is used in ointments and suppositories for the treatment of hemorrhoids; for tanning hides and manufacturing ink; and to kill dust mites on furniture.
  • Tannic acids help eliminate diarrhea, reduce swelling of hemorrhoids, loosen catarrh in the respiratory system, and control various kinds of internal bleeding. Externally, tannins are beneficial in rubs for aching muscles and joints, in salves for open, slow-healing sores, and as antiseptics.
  • Plants high in tannic acid have been used to treat cancers, but tannic acid itself has been found to be carcinogenic under certain conditions.
  • Several Studies have shown tannic acid has antiviral, antimicrobial, and antibacterial properties. In many cases it acts directly on the organism to inactivate it.
  • Tannins have also been implicated in hyaluronidase system. That is, they destroy hyaluronidase in much the same manner as does echinacea, thereby defending the cells of the body against viral invasion.
  • Tannic acid-HCl, the prime reagent for the oxidized tannin-azo
    method, is brownish yellow in color. This solution gave a deep brown
    precipitate on treatment with an equal volume of periodic acid.
  • Tannic acid is most effectively bound at acid pH; this suggests that positively charged amino groups in the tissue proteins are the loci responsible for attachment of tannin. This view was substantiated by the observations on sections pretreated with formaldehyde.
  • Tannic Acid
  • Overview Information
  • Tannic Acid Properties
  • What is Tannic Acid?
  • Tannin Containing Drugs
  • Tannic Acid - Info
  • Tannic Acid - Introduction

Production Process

  • Extraction of Tannin by Acacia mearnsii with Supercritical Fluids
  • Extraction of Tannin from the bark of Arjuna Tree
  • Condensed Tannins
  • Electrocoagulation and recovery of tannins from tree barks
  • Evaluation of Phytochemical standards and In Vitro Antioxidant Activity of tannins rich fraction of Stem Bark of Bridelia retusa
  • Experiments on the Origin of Oak-Bark Tannin
  • The Origins of Tannins
  • Tannin Extraction from the Bark of Pinus oocarpa var. oocarpa
  • Seasonal Dynamics in the Nutritional and Antinutrional status of stem bark of Anogeissus Latifolia
  • Abstract for solvent free production


  • Copper complexation by tannic acid in aqueous solution
  • Determination of antimicrobial activity of tannic acid in pickling process
  • Electrochemical Studies of Dopamine and Epinephrine at a Poly (Tannic Acid) Modified Carbon Paste Electrode
  • Tannic Acid Fermentation
  • Fractionation of Tannic Acid
  • Polyphenol tannic acid inhibits hydroxyl radical formation from Fenton reaction
  • Tannic Acid Is an Inhibitor
  • Liver Proteolytic Activity in Tannic Acid-Fed Birds
  • Synthesis and Biological Activity of Polygalloyl-Dendrimers as Stable Tannic Acid Mimics
  • Toxicity Studies on Tannic Acid
  • Tannic Acid Treatment


  • Tannic Acid Tanex
  • Dry Powdered Tannin
  • Tannic Acid - Product
  • Tannin
  • Tannic Acid


  • Tannic Acid - Msds
  • Tannic Acid / Tannins
  • Anco Tannic Acid Plate Etch
  • Tannic Acid, GR
  • Gallotannin
  • Tannic Acid
  • Tannic acid-granular
  • Tannic Acid Solution
  • Msds of  Tannic Acid
  • Tannic acid MSDS
  • Tannic Acid


  • Accelerated Bioconversion of Agricultural By-Products by Supplementation of Tannic Acid in Tannase Production by Aspergillus Oryzae
  • Animal Experiments with Tannic acid
  • Burns Treated by Tannic Acid
  • Tannins of Deciduous Trees Bard as a Potential Source for Obtaining ecologically safe wood adhesives
  • Dyes and Dyeing
  • Use of Tannins in Chinese Medicine
  • The Germicidal Effects of Tannic Acid
  • Leather Tanning
  • The Use of Tannic Acid
  • Production of Tannase through Submerged Fermentation of Tannin - containing Plant extracts by Bacillus licheniformis
  • On the role of Phenols, Tannic Acids, and Oxybenzoic Acids in Cork Formation
  • Dyeing Extracts and Tannins in the Textile Industry
  • Oxidized Tannin - Azo Method for Protein in Tissues


  • Growth responses of in vitro Fusarium oxysporum f. sp. niveum to external supply of tannic acid
  • Method for Quantitative Determination of Polyphenolic Compounds and Tannins from Vegetal Products
  • Optimization of Process Parameters for the Production of Tannase and Gallic Acid by Enterobacter Cloacae
  • Tannic Acid removal from aqueous effluents using micellar enhanced ultrafiltration at pilot scale
  • Shrinking gold nanoparticles: dramatic effect of a cryogenic process on
    tannic acid/ sodium citrate-generated gold nanoparticles
  • Spectrophotometric assay of immobilized tannase
  • Structural features of takiaik acid important for DNA in the presence of Cu(H)
  • A Technique for Ebonizing Wood
  • Optimization of Various Culture Media for Tannase Production in Submerged Fermentation by Aspergillus flavus
  • Method of treating cancer with tannic acid
  • Tannic acid compositions for treating cancer
  • Tannic acid-adsorbed silicon oxide used as resin additive
  • Wine stabilization using immobilized tannic acid
  • Compositions comprising tannic acid as corrosion inhibitor
  • Contraceptive method and composition containing tannic acid
  • Tannin (tannic acid) treatment of athlete's foot and other fungal infections
  • Process for producing granule coated with tannic acid metal chelate compound
  • Use of tannic or gallic acid to produce low beverage soluble iron content filter aid
  • Composition for Prevention of Influenza Viral Infection Comprising Tannic Acid, Air filter comprising the same and air cleaner device comprising the filter
  • Process for purifying tannic acid
  • Composition and method of treating cancer with tannic acid and tannin complexes

Raw Materials

  • Herbasol Extract Oak Bark
  • NAB Willowbark Extract
  • Pine Bark Extract
  • Punica Granatum
  • Quillaia Extracts
  • Terminalia catappa
  • White Willow Bark (Salix alba)


  • Acute Toxicity
  • Food Intake Depression and Other Metabolic Effects of Tannic Acid in the Rat
  • Metabolic Fate of Dietary Tannins in Chickens
  • Nutritional toxicology of tannins and related polyphenols in forage legumes
  • Thiopental Anesthesia and Tannic Acid Diagnostic Enemas
  • Toxicity Studies on Tannic Acid

Plant and Equipment Suppliers

  • Company from Germany
  • Tannin Extraction plant
  • Another Company from Germany
  • Company from South Africa
  • Company from India

Company Profiles

  • Company from Maharashtra (India)
  • Company from Pennsylvania
  • Company from Belgium
  • Another Company from Pennsylvania
  • Company from Hampshire
  • Company from China
  • Another Company from China
  • Company from Punjab(India)
  • Another Company from China


  • Suppliers List
  • Worldwide Suppliers
  • Manufacturers


  • Consultancy Services
  • Company from Australia
  • Leather Tanning Consulting
  • Consultant from India
  • Consultant


  • Tannic Acid-induced Nucleolar Changes
  • Chemical interactions between thiamin and tannic acid
  • Chile grows its own Tannin
  • A Comparison of Topical Tannic Acid Versus Iontophoresis in the medical treatment of Palmar Hyperhidrosis
  • Drug Delivery Systems based on Collagen - Tannic Acid Matrices
  • Influence of Citric And Tannic Acids on Hydroxy - Al Interlayering in Montmorillonite
  • Mayers's Tannic Acid - Ferric Chloride Stain for Mucins
  • The Preservation of Ultrastructure in saturated phosphatidyl cholines by tannin acid
  • Production and Standards for Chemical Non-Wood
    Forest Products in China
  • Tannin Removal
  • Tannic Acid from Water or Methanol
  • Tannic Acid may boost Beef quality
  • The Market Potential of Tannin Related Innovations in the Wine Industry

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