Yttrium hydroxide

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

Yttrium hydroxide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.036.821
EC Number
  • 240-520-7
  • InChI=1S/3H2O.Y/h3*1H2;/q;;;+3/p-3
    Key: DEXZEPDUSNRVTN-UHFFFAOYSA-K
  • [OH-].[Y+3].[OH-].[OH-]
Properties
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

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]

Chemical properties

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↑

References
  1. 田俐，陈稳纯，陈琳 等. 水热法合成氢氧化钇纳米管. 无机材料学报. 2009. 24(2): 335-339
  2. Perry, Dale L. (2011). Handbook of Inorganic Compounds. CRC Press. pp. 460–461. ISBN 978-1-4398-1461-1.
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