|
Appearance
|
Colorless to white crystals
|
|
Assay (as Ca(NO3)2.4H2O)
|
99 - 103%
|
|
pH (5% solution in water; 25°C)
|
5.0 - 7.0
|
|
Insoluble matter in water
|
Max 0.005%
|
|
Nitrite (NO2)
|
Max 0.001%
|
|
Chloride (Cl)
|
Max 0.005%
|
|
Sulphate (SO4)
|
Max 0.005%
|
|
Barium (Ba)
|
Max 0.01%
|
|
Iron (Fe)
|
Max 0.0005%
|
|
Lead (Pb)
|
Max 0.001%
|
|
Magnesium (Mg)
|
Max 0.05%
|
|
Potassium (K)
|
Max 0.005%
|
|
Sodium (Na)
|
Max 0.02%
|
|
Strontium (Sr)
|
Max 0.05%
|