|
Appearance
|
White hygroscopic powder
|
|
Assay (P2O5)
|
Min 98%
|
|
Chloride (Cl)
|
Max 0.001%
|
|
Nitrate (NO3)
|
Max 0.0005%
|
|
Insoluble matter
|
Max 0.02%
|
|
Reducing substances (as P2O3)
|
Max 0.02%
|
|
Ammonium (NH4)
|
Max 0.001%
|
|
Heavy metal (as Pb)
|
Max 0.01%
|
|
Arsenic (As)
|
Max 0.005%
|
|
Lead (Pb)
|
Max 0.005%
|
|
Cadmium (Cd)
|
Max 0.0005%
|
|
Iron (Fe)
|
Max 0.001%
|
|
Potassium (K)
|
Max 0.005%
|
|
Cobalt (Co)
|
Max 0.0005%
|
|
Copper (Cu)
|
Max 0.0005%
|
|
Manganese (Mn)
|
Max 0.0005%
|
|
Sodium (Na)
|
Max 0.005%
|
|
Nickel (Ni)
|
Max 0.0005%
|
|
Zinc (Zn)
|
Max 0.0005%
|