Item |
Index |
|||
First Grade |
Qualified Product |
|||
Liquid |
Solid |
Liquid |
Solid |
|
Mass fraction of all iron % |
11.0 |
19.0 |
11.0 |
19.0 |
Mass fraction of reducing substance (calculated as Fe) % ≤ |
0.10 |
0.15 |
0.10 |
0.15 |
Basicity % |
8.0-16.0 |
5.0-22.0 |
||
Mass fraction of insoluble substances % ≤ |
0.3 |
0.5 |
0.3 |
0.5 |
pH (1% aqueous solution) |
2.0-3.0 |
2.0-3.0 |
||
Density(20℃)/(g/cm') |
1.45 |
- |
1.45 |
- |
Mass fraction of arsenic (As) % ≤ |
0.0001 |
0.0002 |
0.0005 |
0.001 |
Mass fraction of lead (Pb) % ≤ |
0.0002 |
0.0004 |
0.001 |
0.002 |
Mass fraction of cadmium (Cd) % ≤ |
0.00005 |
0.0001 |
0.00025 |
0.0005 |
Mass fraction of mercury (Hg)%≤ |
0.00001 |
0.00002 |
0.00005 |
0.0001 |
Mass fraction of chromium [Cr (VI)] % ≤ |
0.0005 |
0.001 |
0.0025 |
0.005 |
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