Solid phase
Official name
Magnesium(II) sulfate
Secondary names
Magnesium sulphate; Sulfuric acid, magnesium salt (1:1)
CAS number
7487-88-9
Type
Family
ionic solid
Class
normal salt
Compound type
sulfate
Chemical composition
Formula
$Mg^{2+} \cdot SO_4^{2-}$
Chemical formula
MgSO4
Elemental formula
(Mg2+) S O2 (O-)2
Isotope mixture type
terrestrial abundance
4.0
  Formula Name Family Number min-max Mole fraction Isotope mole fraction State Relevance
$Mg^{2+}$ Magnesium(II) cation element 1 0.5 1 constituent cation main
$(SO_4)^{2-}$ Sulfate anion chemical function 1 0.5 1 anionic radical main
Chemical functions
  Function Number
$(SO_4)^{2-}$ 1
Chemical bonds
  Bond Number
$\cdot Mg^{2+} \cdot O^{-}-$ 2
$\dddot - \dddot - \dddot - S \dddot - O^{-1/2}$ 4
Class
normal salts (07)
Type
simple normal salts (07.01)
Phase type
crystalline
Molar mass
120.366 $g/mol$
Density
2.66 $g/cm^3$
State NTP
solid
Phase transitions
Phase transition type Other phases Temperature - Pressure
solid-liquid liquid 1124 °C (1397 K)
Pure color
colorless
Color
colorless, white
Diaphaneity
transparent to translucent
Luster
vitreous
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