Sodium phosphate dibasic, TraceSELECT™, for trace analysis,

Name: Sodium phosphate dibasic
Synonymns: sec-Sodium phosphate; Disodium hydrogen phosphate; Disodium phosphate; Sodium hydrogenphosphate
Description: TraceSELECT™, for trace analysis, anhydrous, ≥99.999% (metals basis)

Container Type: Plastic Bottle

Molar Mass: 141.96 g/mol

Empirical Formula: HNa₂O₄P
Linear Formula: Na₂HPO₄

CAS Number: 7558-79-4
EC Number: 231-448-7
MDL Number: MFCD00003496
UNSPSC Code: 12000000

SPECIFICATIONS

Arsenic (As): max. 0.1 ppm
Barium (Ba): max. 1 ppm
Calcium (Ca): max. 0.5 ppm
Cadmium (Cd): max. 0.01 ppm
Cerium (Ce): max. 0.01 ppm
Cobalt (Co): max. 0.01 ppm
Cesium (Cs): max. 5 ppm
Copper (Cu): max. 0.01 ppm
Europium (Eu): max. 0.01 ppm
Iron (Fe): max. 0.05 ppm
Mercury (Hg): max. 5 ppb
Iridium (Ir): max. 2 ppm
Potassium (K): max. 2 ppm
Lanthanum (La): max. 0.01 ppm
Lithium (Li): max. 1 ppm
Magnesium (Mg): max. 0.1 ppm
Manganese (Mn): max. 0.01 ppm
Nickel (Ni): max. 0.01 ppm
Lead (Pb): max. 0.01 ppm
Palladium (Pd): max. 0.5 ppm
Platinum (Pt): max. 0.5 ppm
Rubidium (Rb): max. 5 ppm
Rhodium (Rh): max. 0.5 ppm
Ruthenium (Ru): max. 0.5 ppm
Antimony (Sb): max. 0.05 ppm
Selenium (Se): max. 0.01 ppm
Samarium (Sm): max. 0.01 ppm
Strontium (Sr): max. 0.5 ppm
Thallium (Tl): max. 0.01 ppm
Vanadium (V): max. 0.1 ppm
Yttrium (Y): max. 0.01 ppm
Ytterbium (Yb): max. 0.01 ppm
Zinc (Zn): max. 0.01 ppm
Chloride (Cl): max. 5 ppm
Sulfate (SO₄): max. 30 ppm
Total nitrogen (as N): max. 10 ppm



PHYSICAL PROPERTIES

pKa (25 °C): (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)

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