View source for Erbium(III) oxide

{{Chembox
| Name = Erbium(III) oxide
| Reference =
| IUPACName = Erbium(III) oxide
| PIN =
| SystematicName =
| OtherNames = Dierbium trioxide<br>Erbia<br>Erbium oxide
<!-- Images -->
| ImageFile = 
| ImageSize = 
| ImageAlt = 
| ImageName = 
| ImageFile1 = 
| ImageSize1 = 
| ImageAlt1 = 
| ImageName1 = 
| ImageFile2 = 
| ImageSize2 = 
| ImageAlt2 = 
| ImageName2 = 
| ImageFile3 = 
| ImageSize3 = 
| ImageAlt3 = 
| ImageName3 = 
| ImageFileL1 = 
| ImageSizeL1 = 
| ImageAltL1 = 
| ImageNameL1 = 
| ImageFileR1 = 
| ImageSizeR1 = 
| ImageAltR1 = 
| ImageNameR1 = 
| ImageFileL2 = 
| ImageSizeL2 = 
| ImageAltL2 = 
| ImageNameL2 = 
| ImageFileR2 = 
| ImageSizeR2 = 
| ImageAltR2 = 
| ImageNameR2 = 
<!-- Sections -->
| Section1 = {{Chembox Identifiers
| 3DMet = 
| Abbreviations = 
| SMILES = 
  }}
| Section2 = {{Chembox Properties
| AtmosphericOHRateConstant = 
| Appearance = Pink solid
| BoilingPt = 
| BoilingPtC = 3,290
| BoilingPt_ref = 
| BoilingPt_notes = 
| Density = 8.64 g/cm<sup>3</sup>
| Formula = Er<sub>2</sub>O<sub>3</sub>
| HenryConstant = 
| LogP = 
| MolarMass = 382.56 g/mol
| MeltingPt = 
| MeltingPtC = 2,344
| MeltingPt_ref = 
| MeltingPt_notes = 
| Odor = Odorless
| pKa = 
| pKb = 
| Solubility = Insoluble
| SolubleOther = Reacts with acids<br>Insoluble in solvents
| Solvent = 
| VaporPressure = ~0 mmHg
  }}
| Section3 = {{Chembox Structure
| Coordination = 
| CrystalStruct = Cubic, cI80
| MolShape = 
  }}
| Section4 = {{Chembox Thermochemistry
| DeltaGf = 
| DeltaHc = 
| DeltaHf = −1,897.9 kJ/mol
| Entropy = 155.6 J·mol<sup>−1</sup>·K<sup>−1</sup>
| HeatCapacity = 108.5 J·mol<sup>−1</sup>·K<sup>−1</sup>
  }}
| Section5 = {{Chembox Explosive
| ShockSens = Non-explosive
| FrictionSens = Non-explosive
| DetonationV = Non-explosive
| REFactor = Non-explosive
  }}
| Section6 = {{Chembox Hazards
| AutoignitionPt = Non-flammable
| ExploLimits = Non-explosive
| ExternalMSDS = [https://www.docdroid.net/OFq2vsd/erbiumiii-oxide-sa.pdf Sigma-Aldrich]
| FlashPt = Non-flammable
| LD50 = 5.000 mg/kg (rat, oral)
| LC50 = 
| MainHazards = Toxic
| NFPA-F = 
| NFPA-H = 
| NFPA-R = 
| NFPA-S = 
  }}
| Section7 = {{Chembox Related
| OtherAnions = 
| OtherCations = 
| OtherFunction = 
| OtherFunction_label = 
| OtherCompounds = 
  }}
}}
'''Erbium(III) oxide''' is the oxide of [[erbium]], with the formula '''Er<sub>2</sub>O<sub>3</sub>'''.

==Properties==
===Chemical===
Erbium oxide readily absorbs moisture and [[carbon dioxide]] from the atmosphere, forming erbium(III) carbonate. It can react with acids to form the corresponding erbium(III) salts. This makes it a good precursor for many erbium compounds.

===Physical===
Erbium(III) oxide is a pinkish solid, insoluble in water.

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

==Preparation==
Erbium(III) oxide can be prepared by burning erbium metal in air or oxygen atmosphere.

==Projects==
*Make erbium salts

==Handling==
===Safety===
Erbium(III) oxide is toxic when inhaled, taken orally, or injected into the blood stream in massive amounts, though its effect at low concentrations on humans over long periods of time has not been determined.

===Storage===
In closed bottles, preferably air-tight.

===Disposal===
Best to recycle this compound.

==References==
<references/>
===Relevant Sciencemadness threads===
*[http://www.sciencemadness.org/talk/viewthread.php?tid=21663 Very low solubility of erbium oxide in mineral acids]

[[Category:Chemical compounds]]
[[Category:Inorganic compounds]]
[[Category:Lanthanide compounds]]
[[Category:Erbium compounds]]
[[Category:Oxides]]
[[Category:Easily prepared chemicals]]
[[Category:Materials unstable in acidic solution]]