Magnesium(II) sulfate dihydrate | SSHADE

Solid phase

Official name: Magnesium(II) sulfate dihydrate

Name and identifiers

Secondary names: Magnesium sulphate dihydrate

Family: ionic solid
Class: normal salt
Compound type: sulfate
Comments: Magnesium sulfate dihydrate occurs as a mineral: Sanderite

Chemical composition

Formula: $Mg^{2+} \cdot SO_4^{2-} \bullet 2H_2O$
Chemical formula: MgSO4•2H2O
Elemental formula: (Mg2+) S O4 (O-)2 H4
Isotope mixture type: terrestrial abundance

8.0

	Formula	Name	Family	Number min-max	Mole fraction	Isotope mole fraction	State	Relevance
	$Mg^{2+}$	Magnesium(II) cation	element	1	0.25	1	constituent cation	main
	$(SO_4)^{2-}$	Sulfate anion	chemical function	1	0.25	1	anionic radical	main
	$H_2O$	Water	molecule	2	0.5	1	hydration	main

Chemical functions and bonds

Chemical functions

	Function	Number
	$(SO_4)^{2-}$	1
	$R-OH$	2

Chemical bonds

	Bond	Number
	$\cdot Mg^{2+} \cdot O^{-}-$	2
	$-O \dots H-$	4
	$-O-H$	2
	$\dddot - \dddot - \dddot - S \dddot - O^{-1/2}$	4

Class: normal salts (07)
Type: hydrated simple normal salts (07.04)

Associated phases

Equivalent mineral: Sanderite

Crystallography

Phase type: crystalline
Crystal system: orthorhombic
Crystal class: disphenoidal
Crystal class symbol: 222 (D2)
Crystal spacegroup: P2(1)2(1)2(1)

Physical properties

Molar mass: 156.40 $g/mol$
Density: 2.37 $g/cm^3$

Thermodynamical properties

State NTP: solid

Optical properties

Refringence type: biaxial
Refringence sign: unknown
Pure color: colorless
Color: colorless, white
Diaphaneity: transparent to translucent
Luster: vitreous

Links and Publications

Links