Sodium phosphate dibasic

grade

ACS reagent

Quality Level

300

Agency

reag. Ph. Eur.

product line

EMSURE^®

Assay

≥99.0% (alkalimetric)

form

solid

potency

>2000 mg/kg LD₅₀ oral (Rat)

impurities

≤0.01% Insoluble matter

loss

≤ 0.2% loss on drying 105 °C

pH

8.7-9.3 (20 °C 10 g/L in H₂O)

pKa (25 °C)

(1) 2.15 (2) 6.82 (3) 12.38 (phosphoric acid)

mp

250 °C (decomposition)

bulk density

880 kg/m³

anion traces

chloride (Cl^–): ≤0.002%
sulfate (SO₄^2-): ≤0.005%

cation traces

Cu: ≤0.0003%
Fe: ≤0.001%
K: ≤0.01%
Pb: ≤0.001%
heavy metals: ≤0.001%

storage temp.

2-30°C

SMILES string

[Na+].[Na+].[H]OP([O-])([O-])=O

InChI

1S/2Na.H3O4P/c;;1-5(2 3)4/h;;(H3 1 2 3 4)/q2*+1;/p-2

InChI key

BNIILDVGGAEEIG-UHFFFAOYSA-L