Potassium hydrogen phthalate 99.99% acidimetric standard

Supplier: Thermo Scientific

Synonyms: Potassium phthalate monobasic, Potassium biphthalate, Potassium Acid Phthalate, KHP, Phthalic Acid Monopotassium Salt, Phthalic acid potassium salt

177121000 177125000 177120025
ACRO177121000EA 79.6 GBP
ACRO177121000 ACRO177125000 ACRO177120025
Potassium hydrogen phthalate 99.99% acidimetric standard
Potassium hydrogen phthalate
Formula: HOOCC₆H₄COOK
MW: 204,22 g/mol
Melting Pt: 295…300 °C (dec.)
Density: 1,6362 g/cm³ (20 °C)
Storage Temperature: Ambient
MDL Number: MFCD00013070
CAS Number: 877-24-7
EINECS: 212-889-4
Merck Index: 13,07694
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Specification Test Results

Appearance White Crystalline powder or crystals
Infrared spectrum Conforms
Assay 99.95 to 100.05 %
pH 3.8 to 4 (5 % at 20°C)
Sulfate (SO4) ≤60 ppm
Chlorine compounds ≤30 ppm (as Cl)
Iron (Fe) ≤5 ppm
Sodium (Na) ≤50 ppm
Heavy metals (as Pb) ≤5 ppm

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