Lanthanum(III) nitrate

Lanthanum(III) nitrate is any inorganic compound with the chemical formula La(NO₃)₃·xH₂O. It is used in the extraction and purification of lanthanum from its ores.^[5]

Lanthanum(III) nitrate^[1][2][3]

Names
Other names Lanthanum trinitrate
Identifiers
CAS Number	10099-59-9 Y
3D model (JSmol)	Interactive image
ChemSpider	23467
ECHA InfoCard	100.030.203
EC Number	233-238-0
PubChem CID	24918
UNII	33A856C3T7 Y
CompTox Dashboard (EPA)	DTXSID90890639
InChI InChI=1S/La.3HNO3/c;3*2-1(3)4/h;3*(H,2,3,4)/q+3;;; Key: PAPXNISCLWTJQS-UHFFFAOYSA-N
SMILES [N+](=O)(O)[O-].[N+](=O)(O)[O-].[N+](=O)(O)[O-].[La+3]
Properties
Chemical formula	La(NO 3) 3
Molar mass	324.92 g/mol
Appearance	Colorless crystals
Odor	slight odor
Density	1.3 g/cm3
Melting point	40 °C (104 °F; 313 K)
Boiling point	126 °C (259 °F; 399 K)[dubious – discuss] decomposes
Solubility in water	158 g/100 mL
Solubility	Soluble in acetone and ethanol
Hazards
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H272, H315, H319, H335
Precautionary statements	P210, P273, P280, P305+P351+P338+P310, P405, P501
NFPA 704 (fire diamond)	1 2 2
Lethal dose or concentration (LD, LC):
LD50 (median dose)	4500 mg/kg (oral, rat)[4]
Related compounds
Other anions	Lanthanum(III) sulfate
Other cations	Cerium(III) nitrate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

The compound decomposes at 499°C to lanthanum oxide, nitric oxide and oxygen.^[3]

Preparation

Lanthanum nitrate is prepared by reacting lanthanum oxide with nitric acid which creates lanthanum(III) nitrate and water.

La₂O₃ + 6 HNO₃ → 2 La(NO₃)₃ + 3 H₂O