<?xml version="1.0" encoding="UTF-8"?>
<compound>
  <version>1.0</version>
  <creation_date>2026-04-05 16:20:39 UTC</creation_date>
  <update_date>2026-05-20 18:29:12 UTC</update_date>
  <accession/>
  <common_name>2-Amino-5-methyl-benzenesulfonic acid sodium salt (1:1)</common_name>
  <class>SmallMolecule</class>
  <description>2-Amino-5-methyl-benzenesulfonic acid sodium salt (1:1) is an organic compound with the formula C7H8NNaO3S and an average molecular weight of 209.19 g/mol. 2-Amino-5-methyl-benzenesulfonic acid sodium salt (1:1) belongs to the benzenesulfonic acids and derivatives, a subclass of benzene and substituted derivatives within the organic compounds.

This compound has been identified in or released from 19 recorded sources. Within the drinking water and water supply sector, it is found in tap water, bottled water, desalinated water, and drinking water. It is present in aquatic systems and sediments, including freshwater, seawater, surface water, and groundwater. In the sector of wastewater, sanitation, and biosolids, the compound is recorded in industrial wastewater, mine wastewater, wastewater treatment effluent, and unspecified wastewater. Additionally, it is found in water heaters and water coolers within the appliances, HVAC, and refrigerants sector. In the marine, shipping, and aquaculture sector, it is present in bilge water and ballast water, while in the agriculture and land management sector, it is found in irrigation water. The compound is also associated with two other sectors. Recorded routes of exposure include oral, inhalation, and touch.</description>
  <categories/>
  <types>
    <type>PMT</type>
  </types>
  <synonyms/>
  <chemical_formula>C7H8NNaO3S</chemical_formula>
  <average_molecular_weight>209.19</average_molecular_weight>
  <monisotopic_moleculate_weight>209.012259</monisotopic_moleculate_weight>
  <iupac_name/>
  <traditional_iupac/>
  <cas_registry_number>54914-95-3</cas_registry_number>
  <smiles>[Na+].CC1=CC(=C(N)C=C1)S([O-])(=O)=O</smiles>
  <inchi>InChI=1S/C7H9NO3S/c1-5-2-3-6(8)7(4-5)12(9,10)11/h2-4H,8H2,1H3,(H,9,10,11)/p-1</inchi>
  <inchikey>LTPSRQRIPCVMKQ-UHFFFAOYSA-M</inchikey>
  <taxonomy>
    <kingdom>Organic compounds</kingdom>
    <super_class>Benzenoids</super_class>
    <class>Benzene and substituted derivatives</class>
    <sub_class>Benzenesulfonic acids and derivatives</sub_class>
    <direct_parent>Benzenesulfonic acids and derivatives</direct_parent>
    <alternate_parents>
      <alternative_parent>1-sulfo,2-unsubstituted aromatic compounds</alternative_parent>
      <alternative_parent>Aminotoluenes</alternative_parent>
      <alternative_parent>Aniline and substituted anilines</alternative_parent>
      <alternative_parent>Benzenesulfonyl compounds</alternative_parent>
      <alternative_parent>Hydrocarbon derivatives</alternative_parent>
      <alternative_parent>Organic anions</alternative_parent>
      <alternative_parent>Organic oxides</alternative_parent>
      <alternative_parent>Organosulfonic acids</alternative_parent>
      <alternative_parent>Primary amines</alternative_parent>
      <alternative_parent>Sulfonyls</alternative_parent>
    </alternate_parents>
    <substituents>
      <substituent>1-sulfo,2-unsubstituted aromatic compound</substituent>
      <substituent>Amine</substituent>
      <substituent>Aminotoluene</substituent>
      <substituent>Aniline or substituted anilines</substituent>
      <substituent>Aromatic homomonocyclic compound</substituent>
      <substituent>Arylsulfonic acid or derivatives</substituent>
      <substituent>Benzenesulfonate</substituent>
      <substituent>Benzenesulfonyl group</substituent>
      <substituent>Hydrocarbon derivative</substituent>
      <substituent>Organic anion</substituent>
      <substituent>Organic nitrogen compound</substituent>
      <substituent>Organic oxide</substituent>
      <substituent>Organic oxygen compound</substituent>
      <substituent>Organic sulfonic acid or derivatives</substituent>
      <substituent>Organonitrogen compound</substituent>
      <substituent>Organosulfonic acid</substituent>
      <substituent>Organosulfonic acid or derivatives</substituent>
      <substituent>Organosulfur compound</substituent>
      <substituent>Primary amine</substituent>
      <substituent>Sulfonyl</substituent>
      <substituent>Toluene</substituent>
    </substituents>
    <molecular_framework>Aromatic homomonocyclic compounds</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>average_mass</kind>
      <value>209.19</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>mono_mass</kind>
      <value>209.012259</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>smiles</kind>
      <value>[Na+].CC1=CC(=C(N)C=C1)S([O-])(=O)=O</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>formula</kind>
      <value>C7H8NNaO3S</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>inchi</kind>
      <value>InChI=1S/C7H9NO3S/c1-5-2-3-6(8)7(4-5)12(9,10)11/h2-4H,8H2,1H3,(H,9,10,11)/p-1</value>
      <source>ChemAxon</source>
    </property>
    <property>
      <kind>inchikey</kind>
      <value>LTPSRQRIPCVMKQ-UHFFFAOYSA-M</value>
      <source>ChemAxon</source>
    </property>
  </predicted_properties>
  <route_of_exposure/>
  <mechanism_of_toxicity/>
  <metabolism/>
  <toxicity/>
  <lethaldose/>
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  <use_source/>
  <min_risk_level/>
  <health_effects>#&lt;HealthEffect::ActiveRecord_Associations_CollectionProxy:0x00007f7225eabc28&gt;</health_effects>
  <symptoms/>
  <treatment/>
  <drugbank_id/>
  <hmdb_id/>
  <pubchem_compound_id>23681683</pubchem_compound_id>
  <chembl_id/>
  <chemspider_id>15969748</chemspider_id>
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  <general_references/>
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</compound>
