|
Appearance
|
A clear colorless solution
|
|
Assay (acidimetric)
|
Min 32.0%
|
|
Carbonate (as Na2CO3)
|
Max 0.2%
|
|
Chloride (Cl)
|
Max 0.003%
|
|
Phosphate (PO4)
|
Max 0.0005%
|
|
Silicate (SiO2)
|
Max 0.001%
|
|
Sulphate (SO4)
|
Max 0.0005%
|
|
Total nitrogen (N)
|
Max 0.0001%
|
|
Heavy metal (as Pb)
|
Max 0.0005%
|
|
Iron (Fe)
|
Max 0.0005%
|