|
Appearance
|
Colourless crystals or white crystalline powder
|
|
Assay (as Mg (NO3)2.6H2O)
|
98.0 - 102.0%
|
|
pH (5% solution in water; 25°C)
|
5.0 - 8.2
|
|
Insoluble matter
|
Max 0.005%
|
|
Chloride (Cl)
|
Max 0.001%
|
|
Phosphate (PO4)
|
Max 0.0005%
|
|
Sulphate (SO4)
|
Max 0.005%
|
|
Ammonium (NH4)
|
Max 0.003%
|
|
Barium (Ba)
|
Max 0.005%
|
|
Calcium (Ca)
|
Max 0.01%
|
|
Manganese (Mn)
|
Max 0.0005%
|
|
Potassium (K)
|
Max 0.005%
|
|
Sodium (Na)
|
Max 0.005%
|
|
Strontium (Sr)
|
Max 0.005%
|
|
Heavy metals (by ICP-OES)
|
Max 0.0005%
|
|
Iron (Fe)
|
Max 0.0005%
|