Lithium sulfate

Lithium sulfate
	__ Li+ __ S6+ __ O2−
Names
	IUPAC name Lithium sulfate
	Other names Lithium sulphate
Identifiers
CAS Number	10377-48-7 ; 10102-25-7 (monohydrate) ;
3D model (JSmol)	Interactive image;
ChemSpider	59698 ;
ECHA InfoCard	100.030.734
PubChem CID	66320;
RTECS number	OJ6419000;
UNII	919XA137JK ; KHZ7781670 (monohydrate) ;
CompTox Dashboard (EPA)	DTXSID3049201 ;
	InChI InChI=1S/2Li.H2O4S/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q2+1;/p-2 Key: INHCSSUBVCNVSK-UHFFFAOYSA-L ; InChI=1/2Li.H2O4S/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q2+1;/p-2 Key: INHCSSUBVCNVSK-NUQVWONBAF;
	SMILES [Li+].[Li+].[O-]S(=O)(=O)[O-];
Properties
Chemical formula	Li2SO4
Molar mass	109.94 g/mol
Appearance	White crystalline solid, hygroscopic
Density	2.221 g/cm3 (anhydrous) ; 2.06 g/cm3 (monohydrate)
Melting point	859 °C (1,578 °F; 1,132 K)
Boiling point	1,377 °C (2,511 °F; 1,650 K)
Solubility in water	monohydrate: ; 34.9 g/100 mL (25 °C) ; 29.2 g/100 mL (100 °C)
Solubility	insoluble in absolute ethanol, acetone and pyridine
Magnetic susceptibility (χ)	−40.0·10−6 cm3/mol
Refractive index (nD)	1.465 (β-form)
Structure
Crystal structure	Primitive monoclinic
Space group	P 21/a, No. 14
Lattice constant	a = 8.239 Å, b = 4.954 Å, c = 8.474 Å α = 90°, β = 107.98°, γ = 90°
Lattice volume (V)	328.9 Å3
Formula units (Z)	4
Coordination geometry	Tetrahedral at sulfur
Thermochemistry
Heat capacity (C)	1.07 J/g K
Std molar; entropy (S⦵298)	113 J/mol K
Std enthalpy of; formation (ΔfH⦵298)	−1436.37 kJ/mol
Gibbs free energy (ΔfG⦵)	−1324.7 kJ/mol
Hazards
NFPA 704 (fire diamond)	2 0 0
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	613 mg/kg (rat, oral)
Related compounds
Other anions	Lithium chloride
Other cations	Sodium sulfate; Potassium sulfate; Rubidium sulfate; Caesium sulfate
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Lithium sulfate is a white inorganic salt with the formula Li₂S O₄. It is the lithium salt of sulfuric acid.

Names

__ Li⁺ __ S⁶⁺ __ O²⁻

IUPAC name Lithium sulfate
Other names Lithium sulphate
Identifiers
CAS Number	10377-48-7^Y 10102-25-7 (monohydrate)^Y
3D model (JSmol)	Interactive image
ChemSpider	59698^N
ECHA InfoCard	100.030.734
PubChem CID	66320
RTECS number	OJ6419000
UNII	919XA137JK^Y KHZ7781670 (monohydrate)^Y
CompTox Dashboard (EPA)	DTXSID3049201
InChI InChI=1S/2Li.H2O4S/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q2+1;/p-2^N Key: INHCSSUBVCNVSK-UHFFFAOYSA-L^N InChI=1/2Li.H2O4S/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q2+1;/p-2 Key: INHCSSUBVCNVSK-NUQVWONBAF
SMILES [Li+].[Li+].[O-]S(=O)(=O)[O-]
Properties
Chemical formula	Li₂SO₄
Molar mass	109.94 g/mol
Appearance	White crystalline solid, hygroscopic
Density	2.221 g/cm³ (anhydrous) 2.06 g/cm³ (monohydrate)
Melting point	859 °C (1,578 °F; 1,132 K)
Boiling point	1,377 °C (2,511 °F; 1,650 K)
Solubility in water	monohydrate: 34.9 g/100 mL (25 °C) 29.2 g/100 mL (100 °C)
Solubility	insoluble in absolute ethanol, acetone and pyridine
Magnetic susceptibility (χ)	−40.0·10⁻⁶ cm³/mol
Refractive index (n_D)	1.465 (β-form)
Structure
Crystal structure	Primitive monoclinic
Space group	P 2₁/a, No. 14
Lattice constant	a = 8.239 Å, b = 4.954 Å, c = 8.474 Å α = 90°, β = 107.98°, γ = 90°
Lattice volume (V)	328.9 Å³
Formula units (Z)	4
Coordination geometry	Tetrahedral at sulfur
Thermochemistry
Heat capacity (C)	1.07 J/g K
Std molar entropy (S^⦵₂₉₈)	113 J/mol K
Std enthalpy of formation (Δ_fH^⦵₂₉₈)	−1436.37 kJ/mol
Gibbs free energy (Δ_fG^⦵)	−1324.7 kJ/mol
Hazards
NFPA 704 (fire diamond)	2 0 0
Lethal dose or concentration (LD, LC):
LD₅₀ (median dose)	613 mg/kg (rat, oral)
Related compounds
Other anions	Lithium chloride
Other cations	Sodium sulfate Potassium sulfate Rubidium sulfate Caesium sulfate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is ^YN ?) Infobox references