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tri-Sodium citrate dihydrate, Pharmpur®, Ph Eur, BP, USP

- C6H5Na3O7·2H2Or- M = 294,10 g/molr- CAS [6132-04-3]r- EINECS-No.: 200-675-3r- Solub. in water: (25 ºC): 425 g/lr- Melting point: 150 ºC (anhydrous substance)r- Tariff number: 2918 15 00 10r- Applications: analytical chemistry, in buffer solutions, for the analysis of: aminoacids, in food industry (E-331), emulsifier, antioxidant, preservative agent.r- Appearance: BlancorrSPECIFICATIONSrassay USP (titr. with HClO4, referred to dried sample): 99,0 - 100,5 %rassay EP (titr. with HClO4, referred to dried sample): 99,0 - 101,0 %rIdentification sodium: passes testrIdentification citrate: passes testrIdentification C (USP): passes testrappearance of solution: clear and colourlessracidity or alkalinity: passes testralkalinity: passes testrchlorides (Cl): max. 50 ppmroxalates (C2O4): max. 300 ppmrsulfates (SO4): max. 150 ppmrtartrates (C4O6): passes testrsubstances darkened by H2SO4: passes testrwater (K.F.): 11,0 - 13,0 %rloss on drying (180 ºC, 18h): 10,0 - 13,0 %r