Lithium dihydrogen phosphate

Description

Lithium dihydrogen phosphate, also known as LDP, is a White crystalline powder with the formula LiH₂PO₄. It is soluble in water. LiH₂PO₄ is usually prepared by a stoichiometric reaction of Li₂СO₃ and 85% orthophosphoric acid^[1]. It is often used as a raw material for the preparation of cathode materials for lithium batteries or as phosphate in chemical reactions.

Chemical properties

White crystalline powder

The Uses of Lithium dihydrogen phosphate

Lithium Dihydrogen Phosphate is used in preparation method of lithium hydroxide from lithium-containing low-magnesium brine in lithium phosphate manner.

The Uses of Lithium dihydrogen phosphate

Precursor for LiMX2O7 (M = Fe, V; x =P, As) cathode materials.1

General Description

This product has been enhanced for energy efficiency.

Solubility in water

At 0°C， the solubility of lithium dihydrogen phosphate in water is about 55.8wt % (126.2 g of LiH₂PO₄ /100 g of water)^[1]. At 22°C, the solubility of lithium dihydrogen phosphate corresponds to ~ 153.8 g of LiH₂PO₄/100 g of water. At 25°C, it doesn't dissolve in water^[2].

References

[1] A.P. Voronov, G.N. Babenko, V.M. Puzikov, A.N. Iurchenko, Growth of LiH2PO4 single crystals from phosphate solutions, Journal of Crystal Growth, 2013, 374, 49–52. [2] R. W. Berg, A. V. Nikiforov, N. J. Bjerrum, Vapor pressure and specific electrical conductivity in the H2O–LiH2PO4–LiPO3 system—a novel electrolyte for water electrolysis at elevated temperature.Ionics, 2021, 27, 703–719.