|
Appearance
|
White powder
|
|
Assay (as CaSO4.2H2O; complexometric)
|
99.0-102.0%
|
|
Substance insoluble in HCl
|
Max 0.01%
|
|
Carbonate
|
Passes test
|
|
Nitrate (NO3)
|
Passes test
|
|
Free acid (as H2SO4)
|
Max 0.01%
|
|
Free alkali (as Ca(OH)2)
|
Max 0.01%
|
|
Chloride (Cl)
|
Max 0.005%
|
|
Total nitrogen (N)
|
Max 0.001%
|
|
Iron (Fe)
|
Max 0.001%
|
|
Heavy metals (by ICP-OES)
|
Max 0.002%
|
|
Potassium (K)
|
Max 0.005%
|
|
Magnesium (Mg)
|
Max 0.01%
|
|
Sodium (Na)
|
Max 0.02%
|
|
Strontium (Sr)
|
Max 0.05%
|