Tannic Acid, a polyphenolic substance widely found in plants, has a variety of important chemical properties and applications.
Chemical properties of Tannic Acid
Physical state: Tannic Acid is usually a yellow or brown-yellow powder, amorphous and shiny.
Taste: bitter and astringent.
Solubility: Easily soluble in water, ethanol and glycerin, almost insoluble in ether, chloroform or benzene.
Oxidation: Oxidizes to dark quinones under light.
Reaction with metal ions: When met with iron ions, it will quickly become blue-black, which is the main raw material for the manufacture of blue-black ink.
Convergence: Due to the phenolic hydroxyl group it contains, it can cross-link and bond with the imine group of the protein, so that the protein appears hydrophobic, so that the originally water-soluble protein becomes more insoluble in water.
Decomposition temperature: decomposition at 210~215℃.
It has astringency, can bind with protein, reduce the utilization rate of protein in feed, and affect the normal digestion of protein in the gastrointestinal tract.
Tannic Acid can also be complexed with mineral elements to reduce the utilization of nutrients in the feed.
Application in the industrial
Water treatment:
Tannic Acid can form complexes with calcium and magnesium ions in water, prevent scale formation, reduce the deposition of calcium sulfate in cooling water, and play a dispersive role.
Mineral flotation:
As an effective inhibitor of calcium and magnesium minerals, it can interact with the mineral surface through chemical adsorption and other ways to reduce the resolution of the collector from the mineral surface.
Wet extraction of germanium:
As an excellent precipitator, the precipitation rate of germanium can reach more than 90%.
Boiler and heat exchanger descaling:
Complex with calcium and magnesium ions in water, reduce the hardness of water, and prevent corrosion of pipes and boilers.
Application in the medicine industry
Hemostasis and detoxification:
In traditional medicine, Tannic Acid is used as a hemostatic agent and an antidote for certain heavy metal poisonings.
Antibacterial and anti-inflammatory:
It has a strong inhibitory effect on streptococcus and can be used to treat gum disease and periodontitis.
Applications in the food industry
Clarification and stabilization:
As a clarifying agent and stabilizer for beverages and alcohol, it can improve food color, strengthen blood circulation and promote hair growth.
Antioxidant:
As a food antioxidant, extend the shelf life of food.
Application in the cosmetics industry
Sun protection and anti-aging:
It has strong UV absorption properties, inhibits Maillard reaction, and used as an effective ingredient in cosmetics for sunscreen and anti-aging.
Skin protection and moisturizing:
It is not irritating to the skin, has a medium astringent effect, and has good moisturizing properties.
Other applications of Tannic Acid
Leather tanning: as a leather tanning agent, make the leather light soft, elastic, good color.
These applications of Tannic Acid demonstrate their broad importance in different fields, from water treatment to pharmaceutical treatments to the food and cosmetic industries, where Tannic Acid play an integral role.
