|
Appearance
|
A clear colourless solution
|
|
Assay (acidimetric, KOH)
|
44 - 46% (w/w)
|
|
Carbonate (as K2CO3)
|
Max 1%
|
|
Chloride (Cl)
|
Max 0.002%
|
|
Sulphate (SO4)
|
Max 0.0005%
|
|
Phosphate (PO4)
|
Max 0.0005%
|
|
Silicate (SiO2)
|
Max 0.005%
|
|
Total nitrogen (N)
|
Max 0.0003%
|
|
Heavy metal (as Pb)
|
Max 0.0005%
|
|
Iron (Fe)
|
Max 0.001%
|
|
Arsenic (As)
|
Max 0.0001%
|
|
Magnesium (Mg)
|
Max 0.005%
|
|
Copper (Cu)
|
Max 0.001%
|
|
Calcium (Ca)
|
Max 0.001%
|
|
Nickel (Ni)
|
Max 0.0005%
|
|
Sodium (Na)
|
Max 0.5%
|