LANTHANUM(III) SULFATE NONAHYDRATE 99.& Chemical Properties

Density 

2.801 g/mL at 25 °C(lit.)

solubility 

insoluble in ethanol

form 

hexagonal crystals

color 

hexagonal, hexane crystals, crystalline

Water Solubility 

soluble H2O, solubility decreases with increasing temp [MER06]; insoluble alcohol [HAW93]

CAS DataBase Reference

10294-62-9

Safety Information

WGK Germany 

3

LANTHANUM(III) SULFATE NONAHYDRATE 99.& Usage And Synthesis

Chemical Properties

hexagonal prisms; decomposes at white heat; refractive index 1.564 (20°C) [HAW93] [MER06]

Physical properties

White hexagonal crystals; density 2.82 g/cm³; slightly soluble in cold water, solubility decreasing with temperature; insoluble in ethanol; dehydrates in the air at 400°C.

Uses

Lanthanum sulfate is used to prepare many lanthanum compounds.

Preparation

Lanthanum sulfate is prepared by dissolving lanthanum oxide, hydroxide or carbonate in sulfuric acid, followed by crystallization.
La₂O₃ + 3H₂SO₄ → La₂(SO₄)₃ + H₂O
La₂(CO₃)₃ + 3H₂SO₄ → La₂(SO₄)₃ + 3CO₂ + 3H₂O
.

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