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Appearance
|
Colorless viscous liquid
|
|
Assay (acidimetric)
|
48 - 50%
|
|
Colour scale
|
Max 20 APHA
|
|
Carbonate (as Na2CO3)
|
Max 0.2%
|
|
Chloride (Cl)
|
Max 0.005%
|
|
Phosphate (PO4)
|
Max 0.001%
|
|
Silicate (SiO2)
|
Max 0.005%
|
|
Sulphate (SO4)
|
Max 0.001%
|
|
Total nitrogen (N)
|
Max 0.0005%
|
|
Heavy metal (as Pb)
|
Max 0.0005%
|
|
Iron (Fe)
|
Max 0.0005%
|
|
Potassium (K)
|
Max 0.025%
|
|
Ammonium hydroxide precipitate
|
Max 0.01%
|