Characteristic

Lithium sulfate is a white inorganic salt with the formula Li₂SO₄. It is the lithium salt of sulfuric acid.

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)

Crystal structure：Primitive monoclinic

Application

Lithium sulfate is used to treat bipolar disorder (see lithium pharmacology).

Lithium sulfate is researched as a potential component of ion conducting glasses. Transparent conducting film is a highly investigated topic as they are used in applications such as solar panels and the potential for a new class of battery.

Lithium sulfate has been tested as an additive for Portland cement to accelerate curing with positive results. Lithium sulfate serves to speed up the hydration reaction (see Cement) which decreases the curing time.