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Magnesium sulphate
Chemical Formula: MgSO4·nH2O (n=0,1,2,3,5,7)
Molecular Weight: 120.37+18n (n=0,1,2,3,5,7)
CAS No.: 10034-99-8 / 7487-88-9 / 22189-08-8
HS Code: 2833210000
Magnesium sulfate heptahydrate is also known as Epsom salt or bitter salt.
Other CAS numbers: 14168-73-1 (monohydrate); 17830-05-6 (dihydrate); 15320-30-6 (trihydrate); 15244-29-8 (tetrahydrate); 17830-17-0 (pentahydrate); 17830-18-1 and 13778-97-7 (hexahydrate); 10034-99-8 (heptahydrate); 22189-08-8 (x-hydrate).
Physical and chemical property
Solubility: soluble in water;slightly soluble in ethanol, glycerol, ether; insoluble in acetone
Stability: magnesium sulfate anhydrous is easy to absorb water, magnesium sulfate heptahydrate is easy to dehydrate
Specification
| Item | Magnesium Sulfate Heptahydrate | Magnesium Sulfate Pentahydrate | Magnesium Sulfate Trihydrate | Magnesium Sulfate Dihydrate | Magnesium Sulfate Monohydrate | Magnesium Sulfate Anhydrate |
| Appearance | White Crystals | White powder or granular | White powder or granular | White powder or granular | White powder or granular | White powder or granular |
| Assay %≥ | 99.5 | 99 | 99 | 99 | 99 | 98 |
| MgSO4 %≥ | 48.59 | 56 | 68 | 76 | 86 | 98 |
| MgO %≥ | 16.2 | 19 | 22.7 | 25.3 | 28.6 | 32.6 |
| Mg % ≥ | 9.8 | 11.3 | 13.7 | 15.2 | 17.4 | 19.6 |
| PH(5% Solution) | 5.0-9.2 | 5.0-9.2 | 5.0-9.2 | 5.0-9.2 | 5.0-9.2 | 5.0-9.2 |
| Iron(Fe) (mg/kg) ≤ | 15 | 15 | 15 | 15 | 15 | 15 |
| Chloride(Cl) (mg/kg) ≤ | 140 | 140 | 140 | 140 | 140 | 140 |
| Heavy metal(as Pb) (mg/kg) ≤ | 8 | 8 | 8 | 8 | 8 | 8 |
| Arsenic(As) (mg/kg) ≤ | 2 | 2 | 2 | 2 | 2 | 2 |
Application
Agricultural Grade-Sulfur and magnesium can provide rich nutrients for crops that it contributes to crop growth and increase the output, it also helps to loosen the soil and improve soil quality.Magnesium sulfate promotes photosynthesis in plants and increases the synthesis of fats and proteins.It can be used as water soluble fertilizer, leaf surface fertilizer and BB fertilizer.
Feed Grade-Magnesium is usually Fertilization among the early spring and the end of the year, until the grass can provide adequate magnesium ,it can also added in the feed and drinking water to meet growing demand of dairy cow's sebum, in order to improve the quality and quantity of milk cows.
Industrial Grade-Magmesium sulphate can be used in printing and dyeing, Industry,monosodium glutamate and as accessory ingredient for ABS and PVC resin.
Food Grade-Magmesium sulphate can be used in yeast fermentation,food additives, trace elements for people.
Pharmaceutical grade-Cathartic, anti-inflammatory, reduces swelling, detoxification,acesodyne, inhibit central nervous system, anti-convulsions, antispamodic.
Artificial snow- Film, TV series shooting snow scenery, snow scenery realistic. Low concentrations of magnesium sulfate are not harmful to grass and trees, and small amounts of residual magnesium sulfate can be used as nourishment.
