Abcolgambier CAS NO.1401-55-4

1,we produce and sell good chemicals around the world.   

2,our success rate is about 95%. this means, if customer order is accepted, the probability that the       customer will obtain the ordered substances, is 95%.   

3,our staff consists of highly qualified individuals with bsc, msc and ph.d degrees in chemistry, as well as excellent carbohydrates,nucleosides, small molecules and rare chemicals.   

4,imaginechem's chemists are skilled at performing complex, multi-step syntheses and solving difficult chemistry-related problems. because of our better, concentracted size and low overheads, we are able to offer prompt quotations, very competitive prices, high quality products and fast delivery.   

5,all chemicals are typically >97% for building blocks, the structure and purity is confirmed by nmr and lc-ms. intermediates and final products are analyzed by gc, hplc, ir, nmr, ms, elemental analysis, atom-absorpting analysis and crystallographical methods. 

6,Customers-oriented strategy, exclusive supply chain management, professional R&D team, experienced production workers, energetic sales team enable us to offer best service andgood-value products to all of our customers and gradually reach our final goals: becoming global leading supplier for portable products and solutions.

Properties Light yellow powder Properties This product is light yellow to light brown powder, has a special smell, taste very astringent; Soluble in 1 part water or ethanol, soluble in acetone, insoluble in chloroform or ether. Uses Clarifier, astringent, crude oil deodorant, deodorant aid; Tannic acid can be used for tanning leather, ink manufacturing, paper and silk glue, boiler descaling, etc., but also for mordant, beer and wine clarifying agent, rubber coagulant, etc. Tannin can be used in printing and dyeing, metallurgy, medicine and other industries, tannin itself is very low toxicity. Precipitation and gravimetric determination of beryllium, aluminum, gallium, indium, niobium, tantalum and zirconium. Specific determination of copper, iron, vanadium, cerium and cobalt. Precipitator for proteins and alkaloids. External indicator for ammonium molybdate titration of lead. Dye mordant. Physical and chemical properties Tannic acid is also known as Chinese tannic acid, Tannic acid, five Tannic acid gallate. The structure is still unknown. It is generally believed to be an ester formed by the combination of the five hydroxyl groups of glucose and the galacyl group. Gallnut can be extracted and concentrated to produce tannic acid for industrial use. After refining can be made into medicinal or reagent tannic acid. Tannin Chemicalbook acid is a pale yellow amorphous powder or a shiny scaly or spongy solid. No special smell, bitter taste, with convergence. Gradually darken from exposure to air and sunlight. Soluble in cold water, infinitely soluble in hot water; Soluble in methanol, ethanol, acetone and ethyl acetate, insoluble in benzene, ether, chloroform, petroleum ether and carbon disulfide. Tannic acid aqueous solution is weak acid, easy to oxidize, in alkaline solution oxidation faster, solution color darker. In case of ferric ion, the solution is blue and black, and the action of white gelatin and alkaloid produces precipitation. It reacts with lead, aluminum, zinc, germanium and other metal ions to form polynuclear complexes with special color insoluble salts. Tannic acid is decomposed into pyrogallic acid and CO2 when heated to 210 ~ 215℃. Tannin is low toxicity, but large intake can cause vomiting, abdominal pain, diarrhea, and can lead to death of circulatory system disorders, LD1006.0g/kg(rats, oral). It breaks down at high temperatures to form pyrogallol and carbon dioxide. Tannins sold on the market usually contain 10% water.