tem (%)
|
Standard
|
Result
|
Appearance
|
WHITE CRYSTALLINE
|
WHITE CRYSTALLINE
|
APPEARANCE
|
WHITE CRYSTALLINE
|
WHITE CRYSTALLINE
|
[(NH4)2S2O8] ASSAY
|
≥99.50%
|
0.987
|
Residue on ignition(as SO4)
|
≤0.05%
|
0.0002
|
Fe
|
≤0.0005%
|
0.0000023
|
Mn
|
≤0.0001%
|
0.0000001
|
Pb )
|
≤0.0010%
|
0.000005
|
Moisture
|
≤0.15%
|
0.0005
|
CL
|
≤0.001%
|
0.000005
|
Active Oxygen
|
≥6.90%
|
0.0691
|
PH (50g/L )
|
3.0~5.0
|
4.3
|
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