Lutetium(III) chloride

Lutetium(III) chloride
Names
	IUPAC name Lutetium(III) chloride
	Other names Lutetium chloride, lutetium trichloride
Identifiers
CAS Number	10099-66-8 ;
3D model (JSmol)	Interactive image;
ChemSpider	23297 ;
ECHA InfoCard	100.030.205
EC Number	233-240-1;
PubChem CID	24919;
RTECS number	OK8400000;
UNII	2VY5D2E2HC ;
CompTox Dashboard (EPA)	DTXSID2064941 ;
	InChI InChI=1S/3ClH.Lu/h31H;/q;;;+3/p-3 Key: AEDROEGYZIARPU-UHFFFAOYSA-K ; InChI=1S/3ClH.Lu/h31H;/q;;;+3/p-3 Key: AEDROEGYZIARPU-DFZHHIFOAO; Key: AEDROEGYZIARPU-UHFFFAOYSA-K;
	SMILES Cl[Lu](Cl)Cl;
Properties
Chemical formula	LuCl3
Molar mass	281.325 g/mol
Appearance	colorless or white monoclinic crystals
Density	3.98 g/cm3
Melting point	925 °C (1,697 °F; 1,198 K)
Boiling point	sublimes above 750°C
Solubility in water	soluble
Structure
Crystal structure	Monoclinic, mS16
Space group	C2/m, No. 12
Pharmacology
License data	EU EMA: by Lutetium (177 Lu) chloride;
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Irritant
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
Precautionary statements	P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, P501
NFPA 704 (fire diamond)	2 0 1
Related compounds
Other anions	Lutetium(III) oxide
Other cations	Ytterbium(III) chloride; Scandium(III) chloride; Yttrium(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

Lutetium(III) chloride or lutetium trichloride is the chemical compound composed of lutetium and chlorine with the formula LuCl₃. It forms hygroscopic white monoclinic crystals and also a hygroscopic hexahydrate LuCl₃·6H₂O. Anhydrous lutetium(III) chloride has the YCl₃ (AlCl₃) layer structure with octahedral lutetium ions.

Lutetium-177, a radioisotope that can be derived from lutetium(III) chloride, is used in targeted cancer therapies. When lutetium-177 is attached to molecules that specifically target cancer cells, it can deliver localized radiation to destroy those cells while sparing surrounding healthy tissue. This makes lutetium-177-based treatments especially valuable for cancers that are difficult to treat with traditional methods, such as neuroendocrine tumors and prostate cancer. Additionally, lutetium(III) chloride is used in scintillators, materials that emit light when exposed to radiation. These scintillators are crucial in detectors for gamma rays and other high-energy particles, used in both medical diagnostics and in scientific research.