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

产品线

BioXtra

质量水平

200

测定

≥99.0%

形式

powder or crystals

杂质

≤0.1% Insoluble matter

pH值（酸碱度）

8.0-11.0 (20 °C, 1 M in H₂O)

pKa (25 °C)

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

溶解性

H₂O: 1 M at 20 °C, clear, colorless

痕量阴离子

chloride (Cl^-): ≤0.05%
sulfate (SO₄^2-): ≤0.05%

痕量阳离子

Al: ≤0.0005%
Ca: ≤0.002%
Cu: ≤0.0005%
Fe: ≤0.002%
K: ≤0.005%
Mg: ≤0.005%
NH₄⁺: ≤0.05%
Pb: ≤0.001%
Zn: ≤0.0005%

吸光度

<0.05 at 260 in H₂O at 1 M
<0.05 at 280 in H₂O at 1 M

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