|
Appearance
|
White powder or crystal or chunks
|
|
Assay (complexometric)
|
Min 99%
|
|
Chloride (Cl)
|
Max 0.005%
|
|
Sulphate (SO4)
|
Max 0.005%
|
|
Heavy metal (as Pb)
|
Max 0.002%
|
|
Iron (Fe)
|
Max 0.002%
|
|
Cerium (Ce)
|
Max 0.03%
|
|
Neodymium (Nd)
|
Max 0.02%
|
|
Praseodymium (Pr)
|
Max 0.02%
|