ferrous sulphate
ITEM |
STARDARDS |
TEST RESULTS |
APPEARANCE |
LIGHT GREEN, MORE DRY |
LIGHT GREEN, MORE DRY |
(FeSO4·7H2O) |
≥98% |
98.1% |
(Fe) |
≥19.6% |
19.7 |
Cd (content)% |
≤0.0005 |
0.0004 |
As (content)% |
≤0.0002 |
0.0002 |
Pb (content)% |
≤0.002 |
0.002 |
Water insoluble |
≤0.5 |
0.4 |