High Quality Tannic acidbest quality 1401-55-41401-55-4 Wholesaler CAS NO.1401-55-4

High Quality Tannic acidbest quality 1401-55-4 Wholesaler

Tannic acid has anti-bacterial, anti-enzymatic and astringent applications. Used in the dyeing process for cellulose fibers such as cotton. Used in food and medication

Samples synthetic, Our strong r&d team has accumulated abundant experience in synthesis design and exploring synthesis of new technology. Not only good at heterocyclic chemistry, chiral chemicals (asymmetric synthesis and enzyme reaction), metal organic synthesis, high throughput chemistry, also specializes in bioorganic chemistry including nucleosides, nucleotides, sugar chemical, peptide chemistry, etc, to complete the synthesis from mg to kg samples in lab scale. Our efficient management and good communication skills and ability to solve the problem rapidly in order to ensure quality, timely delivery, based on the standard client confidential system and competitive price products,we has been recognized and praised by many customers in chemical industry.

 Scale-up production, based on our rich laboratory experience and advanced equipment in production base, also depend on accumulation of advantages in many aspects as industrialized technology development, the production cost control, to provide from kg class to wt class custom synthesis scale-up production services to the global fine chemical industry, can be carried out oxidation, hydrogenation pressure (70 kg), halide, and acylation, esterification, condensation, cyclization, formatting, ammoniation, diazotization and azide reaction, our experienced production management, strict and perfect management system can quickly provide customers with competitive and fine mass production services.

Tannic acid has its structure still remain unclear, and is generally considered to be the ester formed by the five hydroxyl groups of glucose and gallic acid acyl group. The industrial tannic aicd can be obtained by the extraction of Gallic and further concentration. After further purification, we can obtain pharmaceutical or reagent tannic acid.
Tannic acid is a pale yellow amorphous powder or shiny scaly-like or sponge-like solid. It has no special smell with bitter taste and convergence. It can be gradually darken upon exposure to air and sunlight. It is soluble in cold water and even infinitely soluble in hot water; it is also soluble in methanol, ethanol, acetone and ethyl acetate but insoluble in benzene, ether, chloroform, petroleum ether and carbon disulfide. The aqueous solution of tannic acid exhibits weak acidic and is easily oxidized with oxidation rate being faster in alkaline solution and the color of the solution being deeper. In coming across trivalent iron ions, the solution exhibits blue-black color and can react with gelatin, alkaloids to generate precipitate. It can also react with metal ions such as lead, aluminum, and zinc to generate poly-nuclear complexes and insoluble salts with special colors. When being heated to 210~215 ℃, tannic acid can be decomposed into pyrogallic acid and CO2. Tannic acid has low toxicity, but high intake of it can cause vomiting, abdominal pain, diarrhea, and can also lead to circulatory system disorder which is lethal, LD100 6.0 g/kg (rat, orally). At high temperature, it can be decomposed to generate pyrogallol and carbon dioxide. Market selling tannic acid usually contains 10% moisture.