Cerium(III) chloride

Cerium(III) chloride
Names
	IUPAC names Cerium(III) chloride; Cerium trichloride
	Other names Cerous chloride
Identifiers
CAS Number	7790-86-5 ; 18618-55-8 (heptahydrate) ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:35458 ;
ChemSpider	23038 ;
ECHA InfoCard	100.029.298
EC Number	232-227-8;
Gmelin Reference	1828
PubChem CID	24636;
UNII	TH8E3IE00V ; 188BE3J495 (heptahydrate) ;
CompTox Dashboard (EPA)	DTXSID1037199 ;
	InChI InChI=1S/Ce.3ClH/h;31H/q+3;;;/p-3 Key: VYLVYHXQOHJDJL-UHFFFAOYSA-K ; InChI=1/Ce.3ClH/h;31H/q+3;;;/p-3 Key: VYLVYHXQOHJDJL-DFZHHIFOAZ;
	SMILES [Cl-].[Cl-].[Cl-].[Ce+3];
Properties
Chemical formula	CeCl3
Molar mass	246.48 g/mol (anhydrous) ; 372.58 g/mol (heptahydrate)
Appearance	fine white powder
Density	3.97 g/cm3
Melting point	817 °C (1,503 °F; 1,090 K) (anhydrous) ; 90 °C (heptahydrate, decomposes)
Boiling point	1,727 °C (3,141 °F; 2,000 K)
Solubility	soluble in alcohol
Magnetic susceptibility (χ)	+2490.0·10−6 cm3/mol
Structure
Crystal structure	hexagonal (UCl3 type), hP8
Space group	P63/m, No. 176
Coordination geometry	Tricapped trigonal prismatic; (nine-coordinate)
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H315, H318, H319, H335, H410
Precautionary statements	P261, P264, P271, P273, P280, P302+P352, P304+P340, P305+P351+P338, P310, P312, P321, P332+P313, P337+P313, P362, P391, P403+P233, P405, P501
Flash point	Non-flammable
Related compounds
Other anions	Cerium(III) oxide; Cerium(III) fluoride; Cerium(III) bromide; Cerium(III) iodide
Other cations	Lanthanum(III) chloride; Praseodymium(III) chloride
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Cerium(III) chloride (CeCl₃), also known as cerous chloride or cerium trichloride, is a compound of cerium and chlorine. It is a white hygroscopic salt; it rapidly absorbs water on exposure to moist air to form a hydrate, which appears to be of variable composition, though the heptahydrate CeCl₃·7H₂O is known. It is highly soluble in water, and (when anhydrous) it is soluble in ethanol and acetone.

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