Thulium(III) hydroxide

Thulium(III) hydroxide

Names
Other names Thulium 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 [1]
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

Thulium(III) hydroxide is an inorganic compound with the chemical formula Tm(OH)₃. ^[2] It can be prepared by the addition of ammonia solution to a solution containing a soluble thulium salt. ^[3]

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. ^[1]

Thulium(III) hydroxide reacts to form thulium acetylacetonate in the presence of absolute ethanol and acetylacetone. ^[3] The product precipitates upon cooling of the solution.

Structure of thulium(III) hydroxide

References

1. 《无机化学丛书》. 第七卷 钪 稀土元素. 易宪武 等主编. 科学出版社. P_168~171. (2)氢氧化物
2. Perry, Dale L. (2011). Handbook of inorganic compounds (2nd ed.). Boca Raton: Taylor & Francis. p. 429. ISBN   978-1-4398-1461-1.
3. Spencer, James Frederick (1919). The metals of the rare earths. Longmans, Green and Co., London. pp. 152–153.