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Magnesium Sulphate
is a sulphate based magnesium and sulphur fertilizer. It contains the nutrients magnesium and sulphur in a fully water-soluble and therefore immediately plant available form. It also has many medical uses, and used bath additive known as epsom salts.
CAS RN.: | 7487-88-9;139939-75-6 |
EINECS: | 231-298-2 |
H.S.CODE: | 28332.100.00 |
The advantages of MgSO4
l Fully water-soluble
l Consists of 100% plant nutrients
l Efficient Mg and S nutrients for the light soil and acid soils, especially for the calcareous soils and soils with a high pH, which high calcium concentrations in the soil solution impede the magnesium availability.
l Granular fertilizer has excellent spreading properties due to the well-defined granulometry and the hardness of the granules. These qualities also make it equally well suited for bulk blending.
-Magnesium Sulfate Heptahydrate ( Technical Grade)
Component | Range | Typical |
Main content | 99.5% min | 99.5% |
MgSO4 | 48.59% min | 48.59% |
MgO | 16.24% min | 16.24% |
Mg | 9.8% min | 9.8% |
PH(5W/V%Sol) | 5-9 | 7 |
Ferric(Fe) | 0.002% max | 0.002% |
Chloride(CL) | 0.02% | 0.02% |
Heavy metal (Pb) | 0.001 %max | 0.001 % |
Arsenic(As) | 0.0002% max | 0.0002% |
Insoluble | 0.01%max | 0.01% |
Size (mm) | 0.1-1 0.2-3 1-4 | - |
Appearance | White small granular | White small granular |
- Magnesium Sulfate Heptahydrate (USP.BP.CP)
Component | Range | Typical |
Main content | 99.5% min | 99.5% |
MgSO4 | 48.59% min | 48.59% |
MgO | 16.24% min | 16.24% |
Mg | 9.8% min | 9.8% |
PH(5W/V%Sol) | 5-9 | 7 |
Ferric(Fe) | 0.001% max | 0.001% |
Chloride(Cl) | 0.014%max | 0.01% |
Heavy metal (Pb) | 0.0006%max | 0.0005 % |
Arsenic(As) | 0.0002% max | 0.0001% |
Insoluble | 0.001%max | 0.001% |
Size (mm) | 0.1-1 0.2-3 1-4 | - |
Appearance | White Crystalline | White Crystalline |
- Magnesium Sulfate Anhydrate
Component | Range | Typical |
MgSO4 | 98% min | 98% |
MgO | 32.66% min | 32.66% |
Mg | 19.6% min | 19.6 % |
Ferron(Fe) | 0.0015% max | 0.0015% |
Chloride(Cl) | 0.014%max | 0.014 % |
Heavy metal (Pb) | 0.0008 %max | 0.0008 % |
Arsenic(As) | 0.0002% max | 0.0002% |
Insoluble | 0.1% | 0.1% |
Appearance | White powder | White powder |



3. Transportation Information
DOT Classification: | Not a DOT controlled material. |
U.N. | Not applicable. |
Packing Group: | Not applicable. |
4. Storage & Handing
l Store in the tightly closed container.
l Store in a cool, dry, well-ventilated area away from incompatible substances.
l Recommended storage conditions 68 - 100ºF and 54 – 87% relative humidity.
5. Packing
l In 25kg pp bags, 25MT/20'FCL
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