Thulium(III) hydroxide

Thulium(III) hydroxide is an inorganic compound with the chemical formula Tm(OH)₃.

Thulium(III) hydroxide

Identifiers
CAS Number	1311-33-7 Y
3D model (JSmol)	Interactive image
ChemSpider	66595 Y
ECHA InfoCard	100.013.810
EC Number	215-190-2
PubChem CID	73966
UNII	Q0Q1UR916I
CompTox Dashboard (EPA)	DTXSID1061657
InChI InChI=1S/3H2O.Tm/h3*1H2;/q;;;+3/p-3 Y Key: VZLHRXBDVXNVPC-UHFFFAOYSA-K Y
SMILES [OH-].[OH-].[OH-].[Tm+3]
Properties
Chemical formula	Tm(OH)3
Molar mass	219.958
Appearance	green solid
Related compounds
Other anions	thulium oxide
Other cations	erbium(III) hydroxide ytterbium(III) hydroxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Chemical properties

Thulium(III) hydroxide reacts with acids and produces thulium(III) salts:

Tm(OH)₃ + 3 H⁺ → Tm³⁺ + 3 H₂O

Thulium(III) hydroxide decomposes to TmO(OH) at elevated temperature. Further decomposition produces Tm₂O₃.

Structure of thulium(III) hydroxide