Sodium phosphate monobasic dihydrate, 98-100.5% (calc, meets

Name: Sodium phosphate monobasic dihydrate
Synonymn: Sodium dihydrogen phosphate dihydrate
Description: Meets analytical specification of BP, FCC, Ph. Eur., USP, E 339, 98-100.5% (calc. to the dried substance)

Container Type: Plastic Bottle

Molar Mass: 156.01 g/mol

Empirical Formula: H₂NaO₄P · 2H₂O
Linear Formula: NaH₂PO₄ · 2H₂O

CAS Number: 13472-35-0
EC Number: 231-449-2
MDL Number: MFCD00149209

SPECIFICATIONS

Assay (calculated to the dried substance): 98.0 - 100.5 %
Assay (calculated on the anhydrous basis): 98.0 - 103.0 %
Loss on drying (130°C): 21.5 - 24.0 %
Water (Karl Fischer): 18.0 - 26.5 %
Water insoluble matter: max. 0.2 %
pH (5 %, 25 °C): 4.2 - 4.5
pH (1 %,20°C): 4.1 - 5.0
Arsenic (As): max. 1 ppm
Calcium (Ca): max. 0.002 %
Cadmium (Cd): max. 1 ppm
Copper (Cu): max. 0.001 %
Iron (Fe): max. 5 ppm
Mercury (Hg): max. 1 ppm
Magnesium (Mg): max. 0.002 %
Lead (Pb): max. 1 ppm
Zinc (Zn): max. 0.001 %
Heavy metals (as Pb): max. 10 ppm
Al, Ca and Related Substances: complying
Chloride (Cl): max. 50 ppm
Fluoride (F): max. 10 ppm
Sulfate (SO₄): max. 200 ppm
Reducing impurities: complying
Appearance of the solution: complying
Residual solvents: complying
Appearance: complying

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