SPECIFICATIONS
Assay: min. 99.0 %
Loss on drying (105°C, 2 h): max. 0.2 %
pH (5 %, 25 °C): 4.1 - 4.5
Water insoluble matter: max. 0.01 %
Iron (Fe): max. 0.002 %
Sodium (Na): max. 0.005 %
Heavy metals (as Pb): max. 0.001 %
Chloride (Cl): max. 0.001 %
Sulfate (SO4): max. 0.003 %
PHYSICAL PROPERTIES
pKa (25 °C): (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)
Freezing Point: 253 °C
Density: 2.34 g/cm3
