Specifications | |
---|---|
Assay (acidimetric) | ≥ 98.0 % |
Insoluble matter | ≤ 0.005 % |
pH-value (5 %; water, 25 °C) | 6.7 - 7.3 |
Chloride (Cl) | ≤ 0.0005 % |
Nitrate (NO₃) | ≤ 0.001 % |
Sulphate (SO₄) | ≤ 0.001 % |
Heavy metals (as Pb) | ≤ 0.0002 % |
Ca (Calcium) | ≤ 0.001 % |
Fe (Iron) | ≤ 0.0002 % |
Substances reducing potassium permanganate (as formic acid) | ≤ 0.005 % |
Residue on ignition (as sulphate) | ≤ 0.01 % |
Water | ≤ 2.0 % |
Corresponds to ACS,Reag. Ph Eur |