REF : TANNIC ACID 25KG
25kg Bag
Tannic Acid / Tannin 25kg
Product Summary
Tannic acid is a mixture of esters of glucose with gallic acid and 3-galloylgallic acid derived from various plant extracts rich in this compound, such as gall nuts (galls) and tara seeds (Caesalpinia spinosa). The chemical formula of tannic acid is C76H52O46.
Tannins have been known since Antiquity, when they were used for the tanning of hides.
In its natural state, tannin and tannic acid are found in many plants, for example in vines (grape seeds, grape skins, leaves) and oak (bark, wood, leaves). It is this substance that gives red wine, tea or coffee their astringent character.
We offer tannic acid in powder form, in 25 kg bags, intended for professionals. The technical grade is the one we offer by default; food grade is available on request.
French names: Acide gallotannique, Acide tannique. English names: digallic acid, gallotanic acid, gallotannin, glycerite, tannic acid
MAIN FUNCTIONS
Tannic acid is used to passivate corrosion on metals such as iron, and it can also be used to produce iron gall inks.
INDUSTRIAL USE
- Leather industry: tanning of hides (softening and protection against decomposition)
- Textile industry: fabric dyeing
- Ink industry: manufacture of iron gall ink
- Rubber industry: coagulation of rubber
Other possible uses, with other grades:
- Food industry: manufacture of food coloring E181, flavoring agent, food additive
- Pharmaceutical industry: used in the composition of medications for hemorrhoids and gastroenteritis,
- Cosmetic industry: creams for the treatment of acne problems, shampoo to reduce dandruff
PROFESSIONAL USE
- Veterinary medicine: antidiarrheal astringent
- Winemaking and brewing: clarification of beer and wine (fining of white and rosé wine)
- Hair care: used in taninoplasty, a hair straightening method
- Automotive mechanics: rust converter. Phosphoric acid can also be used.
OTHER COMMON USES
Nutraceutical: used in dietary supplements for free-radical scavenging, antioxidant action, and prevention against UV damage and skin aging
USAGE TIPS
Treatment of rusted iron: clean the surface, then prepare one liter of tannic acid solution at 10% concentration. Mix 800 mL of deionized water and 50 mL of ethanol. Heat over low heat. Gradually add 100 g of tannic acid, while mixing.
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