Magnesium sulfate: Difference between revisions
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|row2={{TDRow|temp=150|input=7-hydrate|output=1-hydrate}} | |row2={{TDRow|temp=150|input=7-hydrate|output=1-hydrate}} | ||
|row3={{TDRow|temp=200|input=1-hydrate|output=anhydrous}} | |row3={{TDRow|temp=200|input=1-hydrate|output=anhydrous}} | ||
|row4={{TDRow|temp=1124|input=anhydrous|output={{#Chem: MgO, | |row4={{TDRow|temp=1124|input=anhydrous|output={{#Chem: MgO, SO2. O2}}}}}} | ||
}} | }} | ||
==Uses== | ==Uses== | ||
Latest revision as of 07:18, 22 January 2020
| Chemical formula | MgSO4 |
|---|---|
| OTP appearance | white solid |
| Molar Mass(g/mol) | 120.366 |
| Density(g/cc) | anh:2.66 hept:1.68 |
| Melting Point(°C) | 1124 (decomp) |
| Solubility in water(g/L) | 255 |
| NFPA 704 |  0
1
0
|
| Thermal decomposition of magnesium sulfate 11-hydrate | |
| 2 | 11-hydrate
2°C 7-hydate |
| 150 | 7-hydrate
150°C 1-hydrate |
| 200 | 1-hydrate
200°C anhydrous |
| 1124 | anhydrous
1124°C MgO,SO2.O2 |
Uses
Primary
- Pharm: WHO LEM, Emergency Medicine
Other
- Dessicant: heptahydrate decomposes at 150°C to monohydrate. This temperature is conveniently higher than the 100°C for boiling water, so the absorbed water will remain locked even if unabsorbed water is removed by distillation.
- Fertilizer: soluble source of both magnesium (for chlorophyll) and sulfur
- Treatment for barium/cadmium poisoning
- Treatment for cardiac arrhythmia
- Bronchodialator
Natural occurrence
- Magnesium sulfate occurs as the mineral epsomite
Hazards
Production
Extraction
- Gather and grind epsomite
Synthesis
Combine Magnesium carbonate or magnesium hydroxide with sulfuric acid, giving magnesium sulfate
- MgCO3 + H2SO4 → MgSO4 + CO2 + H2O
- Mg(OH)2 + H2SO4 + MgSO4 + 2 H2O