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Potassium sodium tartrate Basic information Product Name: Potassium sodium tartrate Synonyms: D-Potassiumsodiumtartrate;Potassium sodium tartarate;POTASSIUM SODIUM TARTRATE SOLUTION 1.5M;SodiumPotassiumTartarate;Butanedioic acid, 2,3-dihydroxy- (2R,3R)-, monopotassium monosodium salt;l-(+)-tartaric acid potassium sodium salt solution;potassium sodium tartrate solution;[R-(R*,R*)]-2,3-Dihydroxybutanedioic acid monopotassium monosodium salt CAS: 304-59-6 MF: C4H4KNaO6 MW: 210.16 EINECS: 206-156-8 Product Categories: Food additive and acidulant Mol File: 304-59-6.mol Potassium sodium tartrate Chemical Properties Melting point 70~80℃ Boiling point 100 °C density 1.24 form Liquid color Clear Colorless PH 7.0-8.5 (25℃, 1.5M in H2O) optical activity [α]20/D +22±1°, c = 1% in H2O Water Solubility g anhydrous/100 g H2O: 31.9 (0°C), 67.8 (20°C), 102 (30°C) [LAN05]; slightly soluble alcohol [MER06] λmax λ: 260 nm Amax: 0.03 λ: 280 nm Amax: 0.025 CAS DataBase Reference 304-59-6(CAS DataBase Reference) EPA Substance Registry System Butanedioic acid, 2,3-dihydroxy- (2R,3R)-, monopotassium monosodium salt (304-59-6) Safety Information Hazard Codes Risk Statements Safety Statements WGK Germany WGK 3 Hazardous Substances Data 304-59-6(Hazardous Substances Data) MSDS Information Provider Language Potassium sodium tartrate English SigmaAldrich English ACROS English Potassium sodium tartrate Usage And Synthesis Description Potassium sodium tartrate is a double salt first prepared (in about 1675) by an apothecary, Pierre Seignette, of La Rochelle, France. As a result the salt was known as Seignette's salt or Rochelle salt. Rochelle salt is not to be confused with rock salt, which is simply the mineral form of sodium chloride. Potassium sodium tartrate and mono potassium phosphate were the first materials discovered to exhibit piezo electricity. It is a colorless to blue - white salt crystallizing in the orthorhombic system. Its molecular formula is KNaC4H4O6·4H2O. It is slightly soluble in alcohol but more completely soluble in water. It has a specific gravity of about 1.79, a melting point of approximately 75°C, and has a saline, cooling taste. As a food additive, its E number is E337. It has been used medicinally as a laxative. It has also been used in the process of silvering mirrors. It is an ingredient of Fehling's solution, formerly used in the determination of reducing sugars in solutions. Chemical Properties often supplied as a colourless aqueous solution Uses Laxative. Uses Sodium Potassium Tartrate is a buffer and sequestrant that is the salt of i, (+)–tartaric acid. It has a solubility in water of 1 g in 1 ml. It is also termed rochelle salt and potassium sodium tartrate. Definition ChEBI: The organic sodium and potassium salt of L-tartaric acid (mol ratio 1:1:1). Preparation Potassium sodium tartrate, (KNaC4H4O6) may be prepared by adding 0.5 mole sodium carbonate to heated solution containing 1 mole potassium bitartrate(KHC4H5O6). (1M KHC4H4O6 : 0.5M Na2CO3). The solution is filtered while hot. This solution is then dried to precipitate solid potassium sodium tartrate, as small crystallites. Larger crystals of Rochelle salt have been grown under conditions of reduced gravity and convection on board Skylab . Purification Methods Recrystallise it from distilled water (1.5mL/g) by cooling to 0o. [Beilstein 3 IV 1223.] Potassium sodium tartrate Preparation Products And Raw materials Raw materials Sodium hydroxide-->Potassium carbonate-->Sodium carbonate-->Potassium hydroxide-->Hydrogen peroxide-->Maleic anhydride-->Potassium bicarbonate-->DL-Tartaric acid Preparation Products Ammonia-->Sulfur-->Sodium thiosulfate-->Sulphur-->Sodium thiocyanate-->Sodium thiosulfate pentahydrate

Sodium tartrate Basic information Product Name: Sodium tartrate Synonyms: SODIUM L-TARTRATE;SODIUM TARTRATE DIBASIC;[r-(r*,r*)]-2,3-dihydroxybutanedioic acid disodium salt;L-TARTARIC ACID SODIUM SALT;DISODIUM TARTRATE;SODIUM SULPHATE ANHY;Butanedioicacid,2,3-dihydroxy-[R-(R*,R*)]-disodiumsalt;sodiumdl-tartrate CAS: 868-18-8 MF: C4H4Na2O6 MW: 194.05 EINECS: 212-773-3 Product Categories: Food additive and acidulant Mol File: 868-18-8.mol   Sodium tartrate Chemical Properties density 1.818 PH 7.0-8.0 (25℃, 1.5M in H2O) Water Solubility soluble in ~9 parts H2O, 2 parts boiling H2O; insoluble alcohol [MER06] λmax λ: 260 nm Amax: 0.070 λ: 280 nm Amax: 0.040 CAS DataBase Reference 868-18-8(CAS DataBase Reference) EPA Substance Registry System Disodium tartrate (868-18-8)   Safety Information WGK Germany - MSDS Information Provider Language Disodium tartrate English   Sodium tartrate Usage And Synthesis Description Sodium tartrate Na2C4H4O6) is used as an emulsifier and a binding agent in food products such as jellies, margarine, and sausage casings. As a food additive, it is known by the E number E335. Because its crystal structure captures a very precise amount of water, it is also a common primary standard for Karl Fischer titration, a common technique to assay water content. Chemical Properties White crystals or granules. Soluble in water; insoluble in alcohol. Uses Sodium Tartrate is a sequestrant and stabilizer that is the disodium salt of l(+)—tartaric acid. it is soluble in water. it functions as a sequestrant and stabilizer in meat products and sausage casings. it is also termed disodium tartrate. Uses Reagent, food additive, as sequestrant and sta- bilizer. Definition ChEBI: The organic sodium salt that is the disodium salt of L-tartaric acid.   Sodium tartrate Preparation Products And Raw materials Raw materials Sodium carbonate