正磷酸钠 十二水合物

产品线

BioXtra

检测方案

≥98.0% (titration)

形式

powder

杂质

Insoluble matter, passes filter test
≤3% Free alkali (as NaOH)

pH值（酸碱度）

~13.0 (20 °C, 0.5 M in water)

溶解性

H2O: 0.5 M at 20 °C, clear, colorless

密度

1.62 g/mL at 25 °C

痕量阴离子

chloride (Cl-): ≤0.005%
sulfate (SO42-): ≤0.005%

痕量阳离子

Al: ≤0.0005%
Ba: ≤0.0005%
Bi: ≤0.0005%
Ca: ≤0.001%
Cd: ≤0.0005%
Co: ≤0.0005%
Cr: ≤0.0005%
Cu: ≤0.0005%
Fe: ≤0.0005%
K: ≤0.005%
Li: ≤0.0005%
Mg: ≤0.0005%
Mn: ≤0.0005%
Mo: ≤0.0005%
Ni: ≤0.0005%
Pb: ≤0.0005%
Sr: ≤0.0005%
Zn: ≤0.0005%

吸光度

≤0.023 at 280 in H2O at 0.5 M
≤0.035 at 260 in H2O at 0.5 M