Grade Item | Magnesium sulte Heptahydrous
| Magnesium sulte Pentahydrous  | Magnesium sulte Trihydrous  | Magnesium sulte Dihydrous                                                                                                    | Magnesium sulte Monohydrous  | Magnesium sulte Anhydrous  |
Appearance | White crystal | White powder Or granula | White powder Or granula | White powder Or granula | White powder Or granula | White powder Or granula |
Main content (%)min | 99.5 | 99 | 99 | 99 | 99 | 98 |
MgSO4(%)min | 48.59 | 56 | 68 | 76 | 86 | 98 |
MgO(%)min | 16.24 | 19 | 22.75 | 25.38 | 28.69 | 32.66 |
Mg(%)min | 9.80 | 11.31 | 13.65 | 15.23 | 17.21 | 19.6 |
5W/V%Sol) | 5-9.2 | 5-9.5 | 5-9.5 | 5-9.5 | 5-9.5 | 5-9.5 |
Ferron(Fe)%max | 0.0015 | 0.0015 | 0.0015 | 0.0015 | 0.0015 | 0.0015 |
Chlorid(Cl)%max | 0.014 | 0.014 | 0.014 | 0.014 | 0.014 | 0.014 |
Heavy metal(Pb)%max | 0.0006 | 0.0006 | 0.0007 | 0.0007 | 0.0008 | 0.0008 |
Arsenic(As)%max | 0.0002 | 0.0002 | 0.0002 | 0.0002 | 0.0002 | 0.0002 |