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magnesium sulfate

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Magnesium sulfate

Anhydrous magnesium sulfate

Epsomite (heptahydrate)

Magnesium sulfate

Other names[hide]

Epsom salt (heptahydrate)
Bitter salts

Identifiers
CAS number 7487-88-9 YesY, 14168-73-1 (monohydrate), 24378-31-2 (tetrahydrate), 15553-21-6 (pentahydrate), 13778-97-7 (hexahydrate), 10034-99-8 (heptahydrate)
PubChem 24083
ChemSpider 22515 YesY
UNII ML30MJ2U7I YesY
DrugBank DB00653
ChEBI CHEBI:32599 YesY
ChEMBL CHEMBL1200456 N
RTECS number OM4500000
ATC code A06AD04,A12CC02 B05XA05 D11AX05 V04CC02
Jmol-3D images Image 1
[show]
  • [Mg+2].[O-]S([O-])(=O)=O

[show]
  • InChI=1S/Mg.H2O4S/c;1-5(2,3)4/h;(H2,1,2,3,4)/q+2;/p-2 YesY
    Key: CSNNHWWHGAXBCP-UHFFFAOYSA-L YesY


    InChI=1/Mg.H2O4S/c;1-5(2,3)4/h;(H2,1,2,3,4)/q+2;/p-2
    Key: CSNNHWWHGAXBCP-NUQVWONBAQ

Properties
Molecular formula MgSO4
Molar mass 120.366 g/mol (anhydrous)
246.47 g/mol (heptahydrate)
Appearance white crystalline solid
Odor odorless
Density 2.66 g/cm3 (anhydrous)
2.445 g/cm3 (monohydrate)
1.68 g/cm3 (heptahydrate)
1.512 g/cm3 (11-hydrate)
Melting point

1124 °C (anhydrous, decomp)
200 °C (monohydrate, decomp)
150 °C (heptahydrate, decomp)
2 °C (11-hydrate, decomp)

Solubility in water anhydrous
26.9 g/100 mL (0 °C)
25.5 g/100 mL (20 °C)
heptahydrate
71 g/100 mL (20 °C)
Solubility 1.16 g/100 mL (18 °C, ether)
slightly soluble in alcohol, glycerol
insoluble in acetone
Refractive index (nD) 1.523 (monohydrate)
1.433 (heptahydrate)
Structure
Crystal structure monoclinic (hydrate)
Hazards
MSDS External MSDS
EU Index Not listed
Related compounds
Other cations Beryllium sulfate
Calcium sulfate
Strontium sulfate
Barium sulfate
N (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Magnesium sulfate (or magnesium sulfate

Last Updated on Wednesday, 13 February 2013 00:02

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