Sodium phosphate dibasic dihydrate
Synonyms: sec-Sodium phosphate or di-sodium hydrogen phosphate dihydrate or disodium hydrogen phosphate dihydrate or disodium phosphateHNa2O4P • 2H2ONa2HPO4 • 2H2OMr 177.99CAS Number [10028-24-7]EC Number 231-448-7Merck 14,8659MDL Number MFCD00149182PubChem Substance ID 24886241Purity ≥ 99.0%
Measured pH Range: 8.7 - 8.9 at 25°CMeasured Conductivity Range: 61.9 - 69.0 mS/cm at 25°CMeasured Refractive Index Range: 1.35644 - 1.35717 at 20°C
Al ≤0.0005%As ≤0.00001%Ba ≤0.0005%Bi ≤0.0005%Ca ≤0.001%Cd ≤0.0005%Cl ≤0.001%Co ≤0.0005%Cr ≤0.0005%Cu ≤0.0005%Fe ≤0.0005%K ≤0.005%Li ≤0.0005%Mg ≤0.0005%Mn ≤0.0005%Mo ≤0.0005%N ≤0.001%Ni ≤0.0005%Pb ≤0.0005%SO4 ≤0.005%Sr ≤0.0005%Zn ≤0.0005%
1.0 M Sodium phosphate dibasic dihydrate is completely soluble in water at 4 degrees Celsius and higher temperatures. Below 4 degrees Celsius 1.0 M Sodium phosphate dibasic dihydrate will crystallize out of solution. If this happens, warm the reagent at 37 degrees until complete solubility is observed (4 to 8 hours) and then store the reagent between 4 and 25 degrees Celsius.
