无水磷酸氢二钠，Sodium phosphate dibasic；ACS reagent, ≥99.0%

等级

ACS reagent

质量水平

200

测定

≥99.0%

形式

powder

杂质

≤0.002% Chloride (Cl)
≤0.01% Insoluble matter

缺失

≤0.2% loss on drying, 105°C

pH值（酸碱度）

8.7-9.3 (25 °C, 5% in solution)

pKa (25 °C)

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

溶解性

water: 5% at 25 °C, clear

痕量阴离子

sulfate (SO₄^2-): ≤0.005%

痕量阳离子

Fe: ≤0.002%
heavy metals: ≤0.001% (by ICP-OES)

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