- Synonyms: Sodium biphosphate, Sodium phosphate monobasic - NaH2PO4 - M = 120,0 g/mol - CAS [7558-80-7] - EINECS-No.: 231-449-2 - Solub. in water: (20 ºC): 850 g/l - Melting point: 200 ºC - LD 50 (oral, rat): 8290 mg/kg - Tariff number: 2835 22 00 00 - Applications: analytical chemistry, laboratory reagent, in food industry (E 339), in pharma industry. SPECIFICATIONS assay (acidimetric, referred to dried sample): 98,0 - 100,5 % Identification A (EP): passes test Identification phosphates USP: passes test Identification C (EP): passes test Identification sodium: passes test Identification phosphates EP: passes test appearance of solution: clear and colourless insoluble in water: max. 0,2 % pH (5 %, H2O): 4,1 - 4,5 chlorides (Cl): max. 0,014 % sulfates (SO4): max. 300 ppm aluminium,calcium and related elements: passes test arsenic (As): max. 2 ppm iron (Fe): max. 10 ppm reducing substances: passes test loss on drying (130 ºC): max. 1,0 % water (K.F.): max. 2,0 %