Manganese sulfate monohydrate
Manganese sulfate monohydrate Chemical Properties
- Melting point:
- 700 °C
- Boiling point:
- 850 °C
- storage temp.
- Store at RT.
- 5-10 g/100 mL at 21°C
- 3.0-3.5 (50g/l, H2O, 20℃)
- Water Solubility
- 5-10 g/100 mL at 21 ºC
- CAS DataBase Reference
- 10034-96-5(CAS DataBase Reference)
- EPA Substance Registry System
- Manganese(II) sulfate monohydrate (10034-96-5)
Manganese sulfate monohydrate Usage And Synthesis
Pale pink crystalline powder, slightly hygroscopic
Manganese sulfate monohydrate is used to produce manganese by an electrolytic process. The compound is used for dyeing textiles; for producing red glazes on porcelain; in varnish driers; in fertilizers; and in animal feeds to provide manganese as an essential trace element.
Manganese Sulfate is a source of manganese that functions as a nutrient and dietary supplement. It exists as a powder which is readily soluble in water.
Manganese(II) sulfate is prepared by prolonged heating of any manganese salt with concentrated sulfuric acid. The compound is produced commercially from pyrolusite (MnO2) or rhodochrosite (MnCO3). Either mineral is dissolved in sulfuric acid and the solution evaporated:
MnO2 + H2SO4 → MnSO4 + H2O + ½ O2
Alternatively, manganese dioxide is heated strongly with dehydrated iron(II) sulfate:
2MnO2 + 2FeSO4 → 2MnSO4 + Fe2O3 + ½ O2
Manganese(II) sulfate, prepared by methods involving evaporation of manganese salt with sulfuric acid, is the tetrahydrate, MnSO4•4H2O. The tetrahydrate on gentle heating produces monohydrate, MnSO4•H2O.
Also, manganese(II) sulfate is a by-product in the manufacture of hydroquinone. The process involves reaction of aniline with manganese dioxide in sulfuric acid, followed by the removal of quinone by steam distillation under vacuum.
2C6H5NH2 (aniline) + 5H2SO4 + 4MnO2 → 2C6H4O2 + 4MnSO4 + 2C6H4O2 + 4MnSO4(quinone)
The unreacted acid is neutralized by lime, treated with water, and the solution filtered to separate any excess MnO2 and insoluble residues. Evaporation of the filtrate yields a crude product containing about 80% MnSO4 and 15% (NH4)2SO4.
Manganese(II) sulfate also may be produced by the action of sulfur dioxide with manganese dioxide:
MnO2 + SO2 → MnSO4
Odorless pale red slightly efflorescent crystals or light pink powder. pH (5% solution) 3.7.
Air & Water Reactions
Water soluble. Hygroscopic.
Manganese(II) sulfate hydrate is incompatible with aluminum and magnesium.
Flash point data for Manganese(II) sulfate hydrate are not available; however, Manganese(II) sulfate hydrate is probably combustible.
Crystallise it from water (0.9mL/g) at 54-55o by evaporating about two-thirds of the water. It dehydrates above 400o.
Manganese sulfate monohydrate Preparation Products And Raw materials
- Manganese nitrate
- Manganese chloride tetrahydrate
- Sulfuric acid
- Manganese sulfate hydrate
- MANGANESE POTASSIUM SULFATE
- MANGANESE (II) SULFATE, HYDROUS
- FERROUS MANGANESE SULFATE
- MANGANESE AMMONIUM SULFATE
- MANGANESE(II) SULFATE TETRAHYDRATE
- Manganese sulfate
- MANGANESE STEARATE
- Silicon Manganese
- GOLD COAST SOLUTION NO 1
- Sodium sulfate
- Magnesium sulfate heptahydrate
- Manganese sulfate monohydrate
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