English
grade
ACS reagent
Quality Level
Assay
≥98%
form
powder
impurities
MnO4- reducers, passes test
≤0.01% insolubles
loss
10.0-12.0% loss on ignition
pH
3-3.5 (20 °C, 50 g/L)
anion traces
chloride (Cl-): ≤0.005%
cation traces
Ca: ≤0.005%
Fe: ≤0.002%
K: ≤0.01%
Mg: ≤0.005%
Na: ≤0.05%
Ni: ≤0.02%
Zn: ≤0.005%
heavy metals: ≤0.002% (by ICP)
storage temp.
2-8°C
