Yttrium hydroxide

Yttrium hydroxide
Identifiers
CAS Number	16469-22-0 ;
3D model (JSmol)	Interactive image;
ChemSpider	77052;
ECHA InfoCard	100.036.821
EC Number	240-520-7;
PubChem CID	85438;
CompTox Dashboard (EPA)	DTXSID901014302 ;
	InChI InChI=1S/3H2O.Y/h3*1H2;/q;;;+3/p-3 Key: DEXZEPDUSNRVTN-UHFFFAOYSA-K;
	SMILES [OH-].[Y+3].[OH-].[OH-];
Properties
Chemical formula	Y(OH)3
Appearance	white solid
Related compounds
Other anions	yttrium oxide
Other cations	scandium(III) hydroxide; lutetium(III) hydroxide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Yttrium(III) hydroxide is an inorganic compound and an alkali with the chemical formula Y(OH)₃.

Production

Yttrium(III) hydroxide can be produced by reacting yttrium(III) nitrate and sodium hydroxide in aqueous solution:^[1]

Y(NO₃)₃ + 3 NaOH → Y(OH)₃↓ + 3 NaNO₃

This gives yttrium(III) hydroxide as a white gelatinous precipitate, which can be dried to a white powder.^[2]

Yttrium(III) hydroxide is an alkali, so it can react with acid:

Y(OH)₃ + 3 HNO₃ → Y(NO₃)₃ + 3 H₂O

2 Y(OH)₃ + 3 H₂SO₄ → Y₂(SO₄)₃ + 3 H₂O

The compound absorbs atmospheric carbon dioxide.^[2]

When heated, yttrium(III) hydroxide will decompose:

2 Y(OH)₃ → Y₂O₃ + 3 H₂O↑

Identifiers
CAS Number	16469-22-0^Y
3D model (JSmol)	Interactive image
ChemSpider	77052
ECHA InfoCard	100.036.821
EC Number	240-520-7
PubChem CID	85438
CompTox Dashboard (EPA)	DTXSID901014302
InChI InChI=1S/3H2O.Y/h3*1H2;/q;;;+3/p-3 Key: DEXZEPDUSNRVTN-UHFFFAOYSA-K
SMILES [OH-].[Y+3].[OH-].[OH-]
Properties
Chemical formula	Y(OH)₃
Appearance	white solid
Related compounds
Other anions	yttrium oxide
Other cations	scandium(III) hydroxide lutetium(III) hydroxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references