Lithium dihydrogen phosphate

Synonym(s):Lithium dihydrogenphosphate

CAS NO.：13453-80-0
Empirical Formula: H4LiO4P
Molecular Weight: 105.94
MDL number: MFCD00016188
EINECS: 236-633-6
SAFETY DATA SHEET (SDS)
Update Date: 2025-01-27 09:38:02

What is 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.

Properties of Lithium dihydrogen phosphate

Melting point:	>100°C
Density	2.5 g/mL at 25 °C(lit.)
storage temp.	Inert atmosphere,Room Temperature
form	Powder
color	white
Specific Gravity	2.461
Water Solubility	Slightly soluble in water.
Stability:	Stable. Incompatible with strong oxidizing agents.
InChI	InChI=1S/Li.H3O4P.H/c;1-5(2,3)4;/h;(H3,1,2,3,4);
CAS DataBase Reference	13453-80-0(CAS DataBase Reference)
EPA Substance Registry System	Phosphoric acid, monolithium salt (13453-80-0)

Safety information for Lithium dihydrogen phosphate

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H302:Acute toxicity,oral H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation
Precautionary Statement Codes	P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P270:Do not eat, drink or smoke when using this product. P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.