Potassium hydrogen phthalate, for analysis, ExpertQ®, Reag. Ph Eur

- Synonyms: Potassium biphthalate, Phthalic acid monopotassium salt, KHP - C8H5KO4 - M = 204,22 g/mol - CAS [877-24-7] - EINECS-No.: 212-889-4 - Solub. in water: (20 ºC): 80 g/l - Melting point: 295 - 300 ºC - LD 50 (oral, rat): > 3200 mg/kg - Tariff number: 2917 39 80 80 - Applications: analytical chemistry, titrant in volumetric analysis (bases), in buffer solutions. SPECIFICATIONS assay (acidimetric, on dried sample): min. 99,9 % identity (IR-spectrum): passes test insoluble in water: max. 0,005 % phthalic acid: max. 0,005 % chlorides (Cl): max. 0,002 % sulfates (SO4): max. 0,005 % cadmium (Cd): max. 5 ppm cobalt (Co): max. 5 ppm copper (Cu): max. 2 ppm heavy metals (as Pb): max. 5 ppm iron (Fe): max. 5 ppm lead (Pb): max. 5 ppm nickel (Ni): max. 5 ppm sodium (Na): max. 0,01 % zinc (Zn): max. 5 ppm loss on drying (105 ºC): max. 0,2 %

- Synonyms: Potassium biphthalate, Phthalic acid monopotassium salt, KHP - C8H5KO4 - M = 204,22 g/mol - CAS [877-24-7] - EINECS-No.: 212-889-4 - Solub. in water: (20 ºC): 80 g/l - Melting point: 295 - 300 ºC - LD 50 (oral, rat): > 3200 mg/kg - Tariff number: 2917 39 80 80 - Applications: analytical chemistry, titrant in volumetric analysis (bases), in buffer solutions. SPECIFICATIONS assay (acidimetric, on dried sample): min. 99,9 % identity (IR-spectrum): passes test insoluble in water: max. 0,005 % phthalic acid: max. 0,005 % chlorides (Cl): max. 0,002 % sulfates (SO4): max. 0,005 % cadmium (Cd): max. 5 ppm cobalt (Co): max. 5 ppm copper (Cu): max. 2 ppm heavy metals (as Pb): max. 5 ppm iron (Fe): max. 5 ppm lead (Pb): max. 5 ppm nickel (Ni): max. 5 ppm sodium (Na): max. 0,01 % zinc (Zn): max. 5 ppm loss on drying (105 ºC): max. 0,2 %

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