<?xml version="1.0" encoding="UTF-8"?>
<compound>
  <version>1.0</version>
  <creation_date>2016-05-19 03:03:51 UTC</creation_date>
  <update_date>2026-04-16 22:43:04 UTC</update_date>
  <accession/>
  <common_name>Yttrium oxide</common_name>
  <class>SmallMolecule</class>
  <description>Yttrium oxide is an inorganic compound with the chemical formula O3Y2 and an average molecular weight of 225.81 g/mol. Yttrium oxide belongs to the miscellaneous mixed metal/non-metals, a class of mixed metal/non-metal compounds within the inorganic compounds.

This substance is found in or released from 30 recorded sources across various sectors. Within electrical and electronic equipment, it is associated with antennas, amplifiers, adjustable resistors, coils, auxiliary devices, and 18 other components. In the realm of building and construction, it is found in roofs and ceilings. Additionally, it is used in food, food processing and cookware, specifically in the processing of fish. Yttrium oxide is also identified in household cleaning and consumer products, including tobacco pipes, pipe accessories, other smoking requisites, and non electric simulated smoking devices.</description>
  <categories/>
  <types/>
  <synonyms/>
  <chemical_formula>O3Y2</chemical_formula>
  <average_molecular_weight>225.809</average_molecular_weight>
  <monisotopic_moleculate_weight>225.79642</monisotopic_moleculate_weight>
  <iupac_name>diyttrium(3+) ion trioxidandiide</iupac_name>
  <traditional_iupac>diyttrium(3+) ion trioxidandiide</traditional_iupac>
  <cas_registry_number>11130-29-3</cas_registry_number>
  <smiles>[O--].[O--].[O--].[Y+3].[Y+3]</smiles>
  <inchi>InChI=1S/3O.2Y/q3*-2;2*+3</inchi>
  <inchikey>RUDFQVOCFDJEEF-UHFFFAOYSA-N</inchikey>
  <taxonomy>
    <kingdom>Inorganic compounds</kingdom>
    <super_class>Mixed metal/non-metal compounds</super_class>
    <class>Miscellaneous mixed metal/non-metals</class>
    <sub_class/>
    <direct_parent>Miscellaneous mixed metal/non-metals</direct_parent>
    <alternate_parents>
      <alternative_parent>Inorganic salts</alternative_parent>
    </alternate_parents>
    <substituents>
      <substituent>Inorganic salt</substituent>
      <substituent>Miscellaneous mixed metal/non-metal</substituent>
    </substituents>
    <molecular_framework/>
    <descriptors/>
  </taxonomy>
  <status>Detected and Not Quantified</status>
  <origin/>
  <cellular_locations/>
  <biofluid_locations/>
  <tissue_locations/>
  <pathways/>
  <state/>
  <appearance/>
  <experimental_properties/>
  <predicted_properties>
    <property>
      <kind>logp</kind>
      <value>-0.65</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>pka_strongest_acidic</kind>
      <value>15.7</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>pka_strongest_basic</kind>
      <value>-1.8</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>iupac</kind>
      <value>diyttrium(3+) ion trioxidandiide</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>average_mass</kind>
      <value>225.809</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>mono_mass</kind>
      <value>225.79642</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>smiles</kind>
      <value>[O--].[O--].[O--].[Y+3].[Y+3]</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>formula</kind>
      <value>O3Y2</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>inchi</kind>
      <value>InChI=1S/3O.2Y/q3*-2;2*+3</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>inchikey</kind>
      <value>RUDFQVOCFDJEEF-UHFFFAOYSA-N</value>
      <source>ChemAxon</source>
    </property>
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      <kind>polar_surface_area</kind>
      <value>0</value>
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    </property>
    <property>
      <kind>refractivity</kind>
      <value>13.11</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>polarizability</kind>
      <value>0.95</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>rotatable_bond_count</kind>
      <value>0</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>acceptor_count</kind>
      <value>1</value>
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    </property>
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      <value>0</value>
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    </property>
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      <kind>physiological_charge</kind>
      <value>0</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>formal_charge</kind>
      <value>0</value>
      <source>ChemAxon</source>
    </property>
  </predicted_properties>
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  <pubchem_compound_id>159374</pubchem_compound_id>
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