焦硫酸钾，Potassium disulfate；for analysis EMSURE® ACS, 97.5-100.0% (K2S2O7 basis, acidimetric)

等级

ACS reagent

质量水平

300

产品线

EMSURE^®

检测方案

97.5-100.0% (K₂S₂O₇ basis, acidimetric)

形式

solid

杂质

≤0.01% Insoluble and by ammoniumhydroxide precipitated matter
≤2.5% Water
37.5-38.6% Acidity (as H₂SO₄)

pH值（酸碱度）

0.8 (20 °C, 50 g/L in H₂O)

mp

325 °C

堆积密度

830 kg/m³

痕量阴离子

chloride (Cl^-): ≤0.0005%
phosphate (PO₄^3-): ≤0.001%

痕量阳离子

Al: ≤0.001%
As: ≤0.0005%
Ca: ≤0.002%
Fe: ≤0.0005%
Mg: ≤0.0005%
N: ≤0.002%
Na: ≤0.01%
heavy metals (as Pb): ≤0.001%

储存温度

no temp limit

InChI

1S/2K.H2O7S2/c;;1-8(2,3)7-9(4,5)6/h;;(H,1,2,3)(H,4,5,6)/q2*+1;/p-2

InChI key

KAQHZJVQFBJKCK-UHFFFAOYSA-L