Thulium(III) fluoride

Thullium(III) fluoride is an inorganic compound with the chemical formula TmF₃.

Thulium(III) fluoride

Identifiers
CAS Number	13760-79-7 Y
3D model (JSmol)	Interactive image
ChemSpider	75532
ECHA InfoCard	100.033.943
EC Number	237-353-7
PubChem CID	83710
UNII	GY8H9KPZ7R Y
CompTox Dashboard (EPA)	DTXSID8065612
InChI InChI=1S/3FH.Tm/h3*1H;/q;;;+3/p-3 Key: AATUHDXSJTXIHB-UHFFFAOYSA-K
SMILES F[Tm](F)F
Properties
Chemical formula	TmF3
Hazards
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H301, H311, H315, H319, H331, H335
Precautionary statements	P261, P264, P270, P271, P280, P301+P310, P302+P352, P304+P340, P305+P351+P338, P311, P312, P321, P322, P330, P332+P313, P337+P313, P361, P362, P363, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Production

It can be produced by reacting thulium(III) sulfide and hydrofluoric acid, followed by thermal decomposition:^[1]

3 Tm₂S₃ + 20 HF + (2 + 2x)H₂O → 2 (H₃O)Tm₃F₁₀·xH₂O↓ + 9 H₂S↑ (x=1.7)

(H₃O)Tm₃F₁₀ → 3 TmF₃ + HF↑ + H₂O↑

Thulium(III) oxide reacts with fluorinating agents such as hydrogen fluoride,^[2] nitrogen trifluoride^[3] xenon difluoride^[4] to create thullium(III) fluoride as well, although the reaction with nitrogen trifluoride is incomplete and produces a mixture of TmOF and TmF₃.^[3]