|
Item |
national standard |
Enterprise constant value |
|
GB1893-2008 |
||
|
Main content(Na2S2O5),% |
≥96.5 |
≥97.5 |
|
(Fe),% |
≤0.003 |
≤0.0015 |
|
Clarity |
Through experiment |
clarify |
|
(Pb),% |
≤0.0005 |
≤0.0002 |
|
(As content),% |
≤0.0001 |
≤0.0001 |
Molecular formula:Na2S2O5
Molecular weight: 190.10
Appearance: white crystalline powder.
Packaging: external polypropylene woven bag, paper plastic composite bag, kraft paper bag, lined with polyethylene plastic bag.
Net weight: 25, 50, 1000 kg/bag or customized according to customer requirements.
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