|
Appearance
|
A white crystalline powder
|
|
Assay ( as AI2(SO4)3.18H2O]; complexometric)
|
98 - 102%
|
|
Insoluble matter
|
Max 0.01%
|
|
Reaction
|
Min pH 2.5
|
|
Chloride (Cl)
|
Max 0.001%
|
|
Ammonium (NH4)
|
Max 0.01%
|
|
Copper (Cu)
|
Max 0.001%
|
|
Iron (Fe)
|
Max 0.002%
|
|
Heavy metal (as Pb)
|
Max 0.001%
|
|
Calcium (Ca)
|
Max 0.01%
|
|
Magnesium (Mg)
|
Max 0.002%
|
|
Potassium (K)
|
Max 0.005%
|
|
Sodium (Na)
|
Max 0.02%
|
|
Substance not precipitated by ammonia (as SO4)
|
Max 0.2%
|