View source for Terbium(III) oxide

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| Name = Terbium(III) oxide
| Reference =
| IUPACName = Terbium(III) oxide
| PIN =
| SystematicName = Terbium(III) oxide
| OtherNames = Terbium trioxide<br>Terbia<br>Terbium sesquioxide
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| Section1 = {{Chembox Identifiers
| 3DMet = 
| Abbreviations = 
| SMILES = [O-2].[O-2].[O-2].[Tb+3].[Tb+3]
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| Section2 = {{Chembox Properties
| AtmosphericOHRateConstant = 
| Appearance = White solid
| BoilingPt = 
| BoilingPtC = 
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| BoilingPt_notes = 
| Density = 7.91 g/cm<sup>3</sup>
| Formula = Tb<sub>2</sub>O<sub>3</sub>
| HenryConstant = 
| LogP = 
| MolarMass = 365.85 g/mol
| MeltingPt = 
| MeltingPtC = 2,410
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| Odor = Odorless
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| Solubility = Insoluble
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| VaporPressure = ~0 mmHg
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| Section3 = {{Chembox Structure
| Coordination = 
| CrystalStruct = Cubic, cI80
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| Section4 = {{Chembox Thermochemistry
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| Section5 = {{Chembox Explosive
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| Section6 = {{Chembox Hazards
| AutoignitionPt = Non-flammable
| ExploLimits = Non-explosive
| ExternalMSDS = [https://www.docdroid.net/UxS7Eo9/terbiumiii-oxide-sa.pdf.html Sigma-Aldrich]
| FlashPt = Non-flammable
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| MainHazards = not listed
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| Section7 = {{Chembox Related
| OtherAnions = 
| OtherCations = 
| OtherFunction = 
| OtherFunction_label = 
| OtherCompounds = [[Terbium(III) chloride]]
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}}
'''Terbium(III) oxide''', also known as '''terbium trioxide''' or '''terbia''', is an oxide of [[terbium]], with a chemical formula '''Tb<sub>2</sub>O<sub>3</sub>'''. 

==Properties==
===Chemical===
Terbium(III) oxide readily dissolves in acids, resulting in the terbium salt of the said acid.

===Physical===
Terbium(III) oxide is a white solid, with a melting point of 2,410 °C.

==Availability==
Terbium(III) oxide is sold by various chemical suppliers.

==Preparation==
The precipitation of most terbium(III) compounds gives terbium(III) hydroxide, which can be converted to Tb<sub>2</sub>O<sub>3</sub>.

Terbium trioxide can be prepared by the reduction of terbium(III,IV) oxide (Tb<sub>4</sub>O<sub>7</sub>) with [[hydrogen]] at 1300 °C for 24 hours. This process is too complex for the amateur chemist, and it's cheaper to simply buy the compound.

==Projects==
*Make terbium salts

==Handling==
===Safety===
Terbium trioxide shows moderate toxicity and has no known biological role.

===Storage===
Terbium(III) oxide should be stored in sealed containers, away from moisture and acidic vapors.

===Disposal===
Terbium(III) oxide can be either recycled or dumped in trash.

==References==
<references/>
===Relevant Sciencemadness threads===
No threads so far. Why not start one?

[[Category:Chemical compounds]]
[[Category:Inorganic compounds]]
[[Category:Lanthanide compounds]]
[[Category:Terbium compounds]]
[[Category:Oxides]]
[[Category:Materials unstable in acidic solution]]