Krj High Quality L (+) -Tartaric Acid CAS 87-69-4 Dihydroxysuccinic Acid¹

Product Description  Product DescriptionL-Tartaric acid (L(+)-Tartaric acid), is a natural organic acid organic compounds, widely distributed in grapes, tamarind, Schisandra and other plants , CAS No. 87-69-4, molecular formula C4H4O4, molecular weight 150.09. Appearance of colorless or white crystalline powder, melting point of 168~170 ° C, density 1.79g/cm3, pKa1=2.98, pKa2=4.34. Soluble in water (582g/L, 20 ° C). /cm3, pKa1=2.98, pKa2=4.34. Soluble in water (582g/L, 20°C), ethanol and glycerol, insoluble in chloroform. It has significant spin, specific spin of +12°.L-tartaric acid is highly acidic, can react with alkali to form salt, and form soluble complexes with metal ions. It can react with bases to form salts and soluble complexes with metal ions. It contains hydroxyl groups in the molecule and can form esters with acylating reagents.L-tartaric acid was first extracted from wine tartar in 1769 and chemically synthesized in 1822.There are four main methods for the preparation of L-tartaric acid, extraction from tartar, chemical synthesis followed by splitting, saccharide fermentation (one-step method) and two-step epoxysuccinic acid fermentation. Extraction of tartaric acid from tartar is the main production method. Crude tartar is inverted with lime milk to produce calcium tartrate, and concentrated sulfuric acid is added to produce tartaric acid and calcium sulfate. After removing the calcium sulfate, it is concentrated and crystallized to produce tartaric acid.L-tartaric acid has a wide range of uses, its optical activity can be used as a chemical splitting agent, and its chiral properties can be used in the synthesis of chiral derivatives or as chiral ligands, solvents, catalysts and so on. As an organic acid, L-tartaric acid is used as a pH adjusting agent, and is salted with inorganic and organic bases to make drugs such as potassium sodium tartrate and choline bitartrate. Its complexing properties are widely used in electroplating, desulfurization, pickling, chemical analysis, pharmaceutical testing and other fields. Using its reducing properties, it is used as the reducing agent of chemical mirror, photographic developer.Product specificationsNameL(+)-Tartaric acidChromaticity≤15AbbreviationsL(+)-Tartaric acidLead time15 daysBoiling  point399.3 oCSampleFreeCharacteristicwhite crystallineApplicationAcidulant for beverages and other foodsPackingDrum/IBC/ISOOriginChinaDangerousnessCorrosive, flammable, irritatingCAS No. 87-69-4Content99.9%HS code 2918120000 Company ProfilePackaging & ShippingApplicationCertificationsFAQ

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