|
Item |
Standard |
Analysis data |
|
Appearance |
White powder |
Conforms |
|
Chloride (Cl) |
Not more than0.04% |
0.015% |
|
Heavy metal(Pb) |
Not more than 10ppm |
8ppm |
|
Arsenic(As2O3) |
Not more than 2ppm |
<1ppm |
|
State of solution (Transmittance) |
Not less than 95.0% |
98.6% |
|
Loss on drying |
Not more than 0.20% |
0.15% |
|
Residue on ignition (sulfated) |
Not more than 0.20% |
0.09% |
|
Assay |
98.0 to 101.0% |
99.0% |
