Potasio dihidrogenofosfato, para HPLC, Potasio bifosfato, Potasio fosfato monobásico
- Synonyms: Potassium biphosphate, Potassium phosphate monobasic, Primary potassium phosphate, Mono-potassium phosphate - KH2PO4 - M = 136,09 g/mol - CAS [7778-77-0] - EINECS-No.: 231-913-4 - Solub. in water: (20 ºC): 222 g/l - Melting point: ~ 253 ºC (decomposes) - Tariff number: 2835 24 00 00 - Applications: analytical chemistry; in buffer solutions. SPECIFICATIONS assay (acidimetric): min. 99,5 % identity (IR-spectrum): passes test insoluble matter: passes test pH (5 %, H2O): 4,2 - 4,5 chlorides (Cl): max. 0,0005 % iron (Fe): max. 5 ppm heavy metals (as Pb): max. 5 ppm wavelength:: absorbance: 210 nm: 0,1 AU 220 nm: 0,06 AU 230 nm: 0,04 AU 300 nm: 0,02 AU
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