<?xml version="1.0" encoding="UTF-8"?>
<compound>
  <version>1.0</version>
  <creation_date>2026-04-04 18:18:27 UTC</creation_date>
  <update_date>2026-08-26 00:27:27 UTC</update_date>
  <accession/>
  <common_name>Phosphinic acid</common_name>
  <class>SmallMolecule</class>
  <description>Phosphinic acid is an inorganic compound with the chemical formula H3O2P1 and an average molecular weight of 66.00 g/mol. Phosphinic acid belongs to the other non-metal oxides, a subclass of other non-metal organides within the inorganic compounds. It is further classified under the superclass of homogeneous non-metal compounds.

The compound is found in or released from 34 recorded sources. Within the category of electrical and electronic equipment, it is associated with antennas, coils, communication cables or conductors, auxiliary devices, and adjustable resistors, among 16 other sources. In the context of household cleaning and consumer products, it is found in bleaching agents, cigar cigarettes, non electric simulated smoking devices, other smoking requisites, and pipe accessories, as well as two additional sources. Regarding building and construction, the compound is linked to ceilings, fencing, and sunshades awnings or outside screens. Additionally, phosphinic acid is present in food, food processing, and cookware, specifically in processing meats and fermentation processes for beer.</description>
  <categories/>
  <types/>
  <synonyms>
    <synonym>228-601-5</synonym>
    <synonym>dihydridodioxophosphoric acid</synonym>
    <synonym>dihydridohydroxidooxidophosphorus</synonym>
    <synonym>dihydroxyphosphanium</synonym>
    <synonym>dihydroxyphosphonium</synonym>
    <synonym>H2PO(OH)</synonym>
    <synonym>H3PO2</synonym>
    <synonym>HPA</synonym>
    <synonym>HPH2O2</synonym>
    <synonym>hydrogen dihydridodioxophosphate(1-)</synonym>
    <synonym>hydrophosphorous acid</synonym>
    <synonym>Hypophosphorous acid</synonym>
    <synonym>Hypophosphorous acid (VAN)</synonym>
    <synonym>Hypophosphorous acid solution</synonym>
    <synonym>PH2(OH)O</synonym>
    <synonym>PH2O(OH)</synonym>
    <synonym>Phosphinic acid</synonym>
    <synonym>UNII-8B1RL9B4ZJ</synonym>
    <synonym>UNII:8B1RL9B4ZJ</synonym>
    <synonym>[PH2(OH)O]</synonym>
    <synonym>[PH2O(OH)]</synonym>
  </synonyms>
  <chemical_formula>H3O2P1</chemical_formula>
  <average_molecular_weight>65.996</average_molecular_weight>
  <monisotopic_moleculate_weight>65.987066</monisotopic_moleculate_weight>
  <iupac_name/>
  <traditional_iupac/>
  <cas_registry_number>14097-15-5</cas_registry_number>
  <smiles>[H]P([H])(O)=O</smiles>
  <inchi>InChI=1S/H3O2P/c1-3-2/h3H2,(H,1,2)</inchi>
  <inchikey>ACVYVLVWPXVTIT-UHFFFAOYSA-N</inchikey>
  <taxonomy>
    <kingdom/>
    <super_class/>
    <class/>
    <sub_class/>
    <direct_parent/>
    <alternate_parents/>
    <substituents/>
    <molecular_framework/>
    <descriptors/>
  </taxonomy>
  <status>Detected and Not Quantified</status>
  <origin/>
  <cellular_locations/>
  <biofluid_locations/>
  <tissue_locations/>
  <pathways/>
  <state/>
  <appearance/>
  <experimental_properties>
    <property>
      <kind>logp</kind>
      <value>-0.7</value>
    </property>
  </experimental_properties>
  <predicted_properties>
    <property>
      <kind>average_mass</kind>
      <value>65.996</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>mono_mass</kind>
      <value>65.987066</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>smiles</kind>
      <value>[H]P([H])(O)=O</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>formula</kind>
      <value>H3O2P1</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>inchi</kind>
      <value>InChI=1S/H3O2P/c1-3-2/h3H2,(H,1,2)</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>inchikey</kind>
      <value>ACVYVLVWPXVTIT-UHFFFAOYSA-N</value>
      <source>ChemAxon</source>
    </property>
  </predicted_properties>
  <route_of_exposure/>
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  <metabolism/>
  <toxicity/>
  <lethaldose/>
  <carcinogenicity/>
  <use_source/>
  <min_risk_level/>
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  <symptoms/>
  <treatment/>
  <drugbank_id/>
  <hmdb_id/>
  <pubchem_compound_id>22497</pubchem_compound_id>
  <chembl_id/>
  <chemspider_id>10449263</chemspider_id>
  <kegg_id/>
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  <biocyc_id/>
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  <general_references/>
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</compound>
