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Potassium sodium tartrate tetrahydrate, Pharmpur®, Ph Eur, BP, USP

- Synonyms: Sodium potassium tartrate, Tartaric acid potassium sodium saltr- C4H4KNaO6·4H2Or- M = 282,23 g/molr- CAS [6381-59-5]r- EINECS-No.: 205-698-2r- Solub. in water: (20 ºC): 630 g/lr- Melting point: 70 - 80 ºCr- Tariff number: 2918 13 00 00r- Applications: analytical chemistry, laboratory reagent, in food industry, in fertilizer compositions, in the electronic industry.rrSPECIFICATIONSrrdried sample): 99,0 - 101,0 %ridentification A (USP): passes testrIdentification B (USP): passes testrIdentification tartrate: passes testrIdentification sodium: passes testrIdentification potassium: passes testrappearance of solution: clear and colourlessracidity or alkalinity: passes testralkalinity : passes testrspecific rotation ([a]20/ D; c = 5, H2O on dried sample): + 28,0 º - + 30,0 º rchlorides (Cl): max. 100 ppm: rsulfates (SO4): max. 50 ppmrammonium (NH4): max. 0,002 %rbarium and oxalates: passes testrcalcium (Ca): max. 200 ppmrwater (K.F.): 24,0 - 26,5 %r