Consensus flow list

Hydrogen

08a91e70-3ddc-11dd-949e-0050c2490048

Identity

Substance
fo-a796b2e0cb454019 ChemicalElement
Source
EF 3.1
Unit
kg
Context
Environmental → Air → Ground level → Urban (>1000 people/square mile)
CAS
1333-74-0
EC
215-605-7

Context

Dimension
Environmental
Media
Air
Population density
Urban (>1000 people/square mile)
Strata
Ground level

Alternative labels

14

Source lists

4
List Version Source flow Name there Why this flow
EF 3.1 08a91e70-3ddc-11dd-949e-0050c2490048 hydrogen The consensus list is built from this one, so this row is the flow itself rather than something matched to it.
bafu 2026-v1 ba9a646a-a883-5653-9caa-49a071a049ed Hydrogen The CAS numbers are the same (1333-74-0); both name the same compartment.
ecoinvent 3.12 8e906def-6bd5-4248-ac2b-94e6eedde3c9 Hydrogen A curator's mapping table (ecoinvent-3.11-biosphere-EF-3.1-biosphere) names this flow.
ecoinvent 3.8 8e906def-6bd5-4248-ac2b-94e6eedde3c9 Hydrogen A curator's mapping table (ecoinvent-3.8-biosphere-EF-3.1-biosphere.json) names this flow.

Concept associations

4
Source list Source flow Name there Compartment there Match Conversion
EF 3.1 08a91e70-3ddc-11dd-949e-0050c2490048 hydrogen Emissions/Emissions to air/Emissions to urban air close to ground exactMatch —
ecoinvent 3.12 8e906def-6bd5-4248-ac2b-94e6eedde3c9 Hydrogen air / urban air close to ground exactMatch —
ecoinvent 3.8 8e906def-6bd5-4248-ac2b-94e6eedde3c9 Hydrogen air / urban air close to ground exactMatch —
bafu 2026-v1 ba9a646a-a883-5653-9caa-49a071a049ed Hydrogen emissions to air / high. pop. closeMatch —

History

The change log and the PROV-O trail (2 consensus changes)

Open the changes page

These are the heaviest sections of this page and the least often read, so the page does not pay for them until you ask.

Full record

Flow JSON 
{
  "altLabel": [
    {
      "@value": "(1)H2",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "chebi_altlabels",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "http://purl.obolibrary.org/obo/CHEBI_29299",
          "EF 3.1"
        ],
        "prov:wasDerivedFrom": "chebi synonym match"
      }
    },
    {
      "@value": "E949",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "chebi_altlabels",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "http://purl.obolibrary.org/obo/CHEBI_18276",
          "EF 3.1"
        ],
        "prov:wasDerivedFrom": "chebi synonym match"
      }
    },
    {
      "@value": "H(2)",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "chebi_altlabels",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "http://purl.obolibrary.org/obo/CHEBI_18276",
          "EF 3.1"
        ],
        "prov:wasDerivedFrom": "chebi synonym match"
      }
    },
    {
      "@value": "H2",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "chebi_altlabels",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "http://purl.obolibrary.org/obo/CHEBI_18276",
          "EF 3.1"
        ],
        "prov:wasDerivedFrom": "chebi synonym match"
      }
    },
    {
      "@value": "dihydrogen",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "chebi_altlabels",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "http://purl.obolibrary.org/obo/CHEBI_18276",
          "EF 3.1"
        ],
        "prov:wasDerivedFrom": "chebi synonym match"
      }
    },
    {
      "@value": "diprotium",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "chebi_altlabels",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "http://purl.obolibrary.org/obo/CHEBI_29299",
          "EF 3.1"
        ],
        "prov:wasDerivedFrom": "chebi synonym match"
      }
    },
    {
      "@value": "molecular hydrogen",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "chebi_altlabels",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "http://purl.obolibrary.org/obo/CHEBI_18276",
          "EF 3.1"
        ],
        "prov:wasDerivedFrom": "chebi synonym match"
      }
    },
    {
      "@value": "Hydrogen (H2)",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "consensus_match",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CAS:1333-74-0",
          "https://commonchemistry.cas.org/detail?cas_rn=1333-74-0"
        ],
        "prov:wasDerivedFrom": "common chemistry CAS lookup"
      }
    },
    {
      "@value": "Hydrogen element",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "consensus_match",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CAS:1333-74-0",
          "https://commonchemistry.cas.org/detail?cas_rn=1333-74-0"
        ],
        "prov:wasDerivedFrom": "common chemistry CAS lookup"
      }
    },
    {
      "@value": "Hydrogen gas",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "consensus_match",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CAS:1333-74-0",
          "https://commonchemistry.cas.org/detail?cas_rn=1333-74-0"
        ],
        "prov:wasDerivedFrom": "common chemistry CAS lookup"
      }
    },
    {
      "@value": "Hydrogen molecule",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "consensus_match",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CAS:1333-74-0",
          "https://commonchemistry.cas.org/detail?cas_rn=1333-74-0"
        ],
        "prov:wasDerivedFrom": "common chemistry CAS lookup"
      }
    },
    {
      "@value": "Mol. hydrogen",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "consensus_match",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CAS:1333-74-0",
          "https://commonchemistry.cas.org/detail?cas_rn=1333-74-0"
        ],
        "prov:wasDerivedFrom": "common chemistry CAS lookup"
      }
    },
    {
      "@value": "Orthohydrogen",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "consensus_match",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CAS:1333-74-0",
          "https://commonchemistry.cas.org/detail?cas_rn=1333-74-0"
        ],
        "prov:wasDerivedFrom": "common chemistry CAS lookup"
      }
    },
    {
      "@value": "Parahydrogen",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "consensus_match",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CAS:1333-74-0",
          "https://commonchemistry.cas.org/detail?cas_rn=1333-74-0"
        ],
        "prov:wasDerivedFrom": "common chemistry CAS lookup"
      }
    }
  ],
  "properties": {
    "https://w3id.org/chemrof/molecular_formula": {
      "@id": "https://w3id.org/chemrof/molecular_formula",
      "@value": [
        "H2"
      ],
      "attested_by": {
        "H2": [
          "enrich_references.chebi_semantic",
          "enrich_references.commonchemistry_semantic",
          "enrich_references.pubchem_semantic",
          "rdkit_post_consensus"
        ]
      },
      "rdfs:label": "Molecular formula",
      "provenance": [
        {
          "prov:wasGeneratedBy": "enrich_references.chebi_semantic",
          "prov:wasAttributedTo": "consensus-flow-list",
          "prov:hadPrimarySource": [
            "http://purl.obolibrary.org/obo/CHEBI_18276"
          ],
          "prov:wasDerivedFrom": "chebi.basic_property_values.generalized_empirical_formula"
        },
        {
          "prov:wasGeneratedBy": "enrich_references.pubchem_semantic",
          "prov:wasAttributedTo": "consensus-flow-list",
          "prov:hadPrimarySource": [
            "CID:783"
          ],
          "prov:wasDerivedFrom": "pubchem.props.Molecular Formula"
        },
        {
          "prov:wasGeneratedBy": "enrich_references.commonchemistry_semantic",
          "prov:wasAttributedTo": "consensus-flow-list",
          "prov:hadPrimarySource": [
            "CAS:1333-74-0"
          ],
          "prov:wasDerivedFrom": "commonchemistry.molecularFormula"
        },
        {
          "prov:wasGeneratedBy": "rdkit_post_consensus",
          "prov:wasAttributedTo": "consensus-flow-list",
          "prov:hadPrimarySource": [
            "[H][H]"
          ]
        }
      ]
    },
    "https://w3id.org/chemrof/smiles_string": {
      "@id": "https://w3id.org/chemrof/smiles_string",
      "rdfs:label": "SMILES",
      "@value": [
        "[H][H]"
      ],
      "provenance": [
        {
          "prov:wasGeneratedBy": "opsin_iupac",
          "prov:wasAttributedTo": "consensus-flow-list",
          "prov:hadPrimarySource": [
            "dihydrogen"
          ]
        },
        {
          "prov:wasGeneratedBy": "rdkit_post_consensus",
          "prov:wasAttributedTo": "consensus-flow-list",
          "prov:hadPrimarySource": [
            "[H][H]"
          ]
        }
      ],
      "attested_by": {
        "[H][H]": [
          "opsin_iupac",
          "rdkit_post_consensus"
        ]
      }
    },
    "https://w3id.org/chemrof/inchi2d_string": {
      "@id": "https://w3id.org/chemrof/inchi2d_string",
      "rdfs:label": "InChI",
      "@value": [
        "InChI=1S/H2/h1H"
      ],
      "provenance": [
        {
          "prov:wasGeneratedBy": "opsin_iupac",
          "prov:wasAttributedTo": "consensus-flow-list",
          "prov:hadPrimarySource": [
            "dihydrogen"
          ]
        },
        {
          "prov:wasGeneratedBy": "rdkit_post_consensus",
          "prov:wasAttributedTo": "consensus-flow-list",
          "prov:hadPrimarySource": [
            "[H][H]"
          ]
        }
      ],
      "attested_by": {
        "InChI=1S/H2/h1H": [
          "opsin_iupac",
          "rdkit_post_consensus"
        ]
      }
    },
    "https://w3id.org/chemrof/inchi2d_key_string": {
      "@id": "https://w3id.org/chemrof/inchi2d_key_string",
      "@value": [
        "UFHFLCQGNIYNRP-UHFFFAOYSA-N"
      ],
      "attested_by": {
        "UFHFLCQGNIYNRP-UHFFFAOYSA-N": [
          "enrich_references.chebi_semantic",
          "enrich_references.commonchemistry_semantic",
          "enrich_references.pubchem_semantic",
          "rdkit_post_consensus"
        ]
      },
      "rdfs:label": "InChIKey",
      "provenance": [
        {
          "prov:wasGeneratedBy": "enrich_references.chebi_semantic",
          "prov:wasAttributedTo": "consensus-flow-list",
          "prov:hadPrimarySource": [
            "http://purl.obolibrary.org/obo/CHEBI_18276"
          ],
          "prov:wasDerivedFrom": "chebi.basic_property_values.inchi_key_string"
        },
        {
          "prov:wasGeneratedBy": "enrich_references.pubchem_semantic",
          "prov:wasAttributedTo": "consensus-flow-list",
          "prov:hadPrimarySource": [
            "CID:783"
          ],
          "prov:wasDerivedFrom": "pubchem.props.InChIKey"
        },
        {
          "prov:wasGeneratedBy": "enrich_references.commonchemistry_semantic",
          "prov:wasAttributedTo": "consensus-flow-list",
          "prov:hadPrimarySource": [
            "CAS:1333-74-0"
          ],
          "prov:wasDerivedFrom": "commonchemistry.inchiKey"
        },
        {
          "prov:wasGeneratedBy": "rdkit_post_consensus",
          "prov:wasAttributedTo": "consensus-flow-list",
          "prov:hadPrimarySource": [
            "[H][H]"
          ]
        }
      ]
    },
    "https://w3id.org/chemrof/molecular_mass": {
      "@id": "https://w3id.org/chemrof/molecular_mass",
      "@value": [
        2.016
      ],
      "attested_by": {
        "2.016": [
          "enrich_references.chebi_semantic",
          "rdkit_post_consensus"
        ]
      },
      "rdfs:label": "Molecular mass",
      "http://qudt.org/schema/qudt/hasUnit": "https://vocab.brightway.one/units/unit/GM-PER-MOL",
      "provenance": [
        {
          "prov:wasGeneratedBy": "enrich_references.chebi_semantic",
          "prov:wasAttributedTo": "consensus-flow-list",
          "prov:hadPrimarySource": [
            "http://purl.obolibrary.org/obo/CHEBI_18276"
          ],
          "prov:wasDerivedFrom": "chebi.basic_property_values.mass"
        },
        {
          "prov:wasGeneratedBy": "rdkit_post_consensus",
          "prov:wasAttributedTo": "consensus-flow-list",
          "prov:hadPrimarySource": [
            "[H][H]"
          ]
        }
      ]
    },
    "https://w3id.org/chemrof/monoisotopic_mass": {
      "@id": "https://w3id.org/chemrof/monoisotopic_mass",
      "@value": [
        2.01565
      ],
      "attested_by": {
        "2.01565": [
          "enrich_references.chebi_semantic",
          "rdkit_post_consensus"
        ]
      },
      "rdfs:label": "Monoisotopic mass",
      "http://qudt.org/schema/qudt/hasUnit": "https://vocab.brightway.one/units/unit/GM-PER-MOL",
      "provenance": [
        {
          "prov:wasGeneratedBy": "enrich_references.chebi_semantic",
          "prov:wasAttributedTo": "consensus-flow-list",
          "prov:hadPrimarySource": [
            "http://purl.obolibrary.org/obo/CHEBI_18276"
          ],
          "prov:wasDerivedFrom": "chebi.basic_property_values.monoisotopic_mass"
        },
        {
          "prov:wasGeneratedBy": "rdkit_post_consensus",
          "prov:wasAttributedTo": "consensus-flow-list",
          "prov:hadPrimarySource": [
            "[H][H]"
          ]
        }
      ]
    },
    "https://w3id.org/chemrof/IUPAC_name": {
      "@id": "https://w3id.org/chemrof/IUPAC_name",
      "rdfs:label": "IUPAC name",
      "@value": [
        "dihydrogen"
      ],
      "provenance": {
        "prov:wasGeneratedBy": "opsin_iupac",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "dihydrogen"
        ]
      },
      "attested_by": {
        "dihydrogen": [
          "opsin_iupac"
        ]
      }
    },
    "https://w3id.org/chemrof/symbol": {
      "rdfs:label": "symbol",
      "@value": [
        "H"
      ],
      "provenance": {
        "prov:wasGeneratedBy": "flow_layers.pubchem_element_enrichment",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "https://pubchem.ncbi.nlm.nih.gov/element/1",
          "https://pubchem.ncbi.nlm.nih.gov/rest/pug_view/data/element/1/JSON"
        ],
        "prov:wasDerivedFrom": "pubchem.element.symbol"
      }
    },
    "https://w3id.org/chemrof/atomic_number": {
      "rdfs:label": "atomic number",
      "@value": [
        1
      ],
      "http://qudt.org/schema/qudt/hasUnit": "https://vocab.brightway.one/units/unit/NUM",
      "provenance": {
        "prov:wasGeneratedBy": "flow_layers.pubchem_element_enrichment",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "https://pubchem.ncbi.nlm.nih.gov/element/1",
          "https://pubchem.ncbi.nlm.nih.gov/rest/pug_view/data/element/1/JSON"
        ],
        "prov:wasDerivedFrom": "pubchem.element.atomic_number"
      }
    },
    "element": {
      "atomic_number": 1,
      "symbol": "H",
      "name": "Hydrogen",
      "most_abundant_neutron_number": 0,
      "charge": 0,
      "provenance": {
        "prov:wasGeneratedBy": "flow_layers.pubchem_element_enrichment",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "https://pubchem.ncbi.nlm.nih.gov/element/1",
          "https://pubchem.ncbi.nlm.nih.gov/rest/pug_view/data/element/1/JSON"
        ],
        "prov:wasDerivedFrom": "pubchem.periodic_table_record"
      }
    },
    "isotopes": {
      "consensus_matched": [
        {
          "flow_object_id": "fo-636906eac63af14b",
          "pref_label_value": "Hydrogen-3",
          "nuclide": "3H",
          "half_life_and_uncertainty": "12.32 y ± 0.02",
          "specific_activity_bq_per_g": "3.5622145944513e+14",
          "chemlin_url": "https://www.chemlin.org/isotope/hydrogen-3"
        }
      ],
      "short_lived_not_in_consensus_count": 0,
      "provenance": {
        "prov:wasGeneratedBy": "flow_layers.pubchem_element_enrichment",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "https://pubchem.ncbi.nlm.nih.gov/element/1",
          "https://pubchem.ncbi.nlm.nih.gov/rest/pug_view/data/element/1/JSON"
        ],
        "prov:wasDerivedFrom": "pubchem.element.isotope_decay_and_consensus_kbq_flow_objects"
      }
    },
    "ef31_references": {
      "flow_object_ids": [
        "fo-a796b2e0cb454019"
      ],
      "elementary_flow_ids": [
        "08a91e70-3ddc-11dd-949c-0050c2490048",
        "08a91e70-3ddc-11dd-949d-0050c2490048",
        "08a91e70-3ddc-11dd-949e-0050c2490048",
        "08a91e70-3ddc-11dd-949f-0050c2490048",
        "1f30af30-6556-11dd-ad8b-0800200c9a66",
        "1f30af31-6556-11dd-ad8b-0800200c9a66",
        "1f30af32-6556-11dd-ad8b-0800200c9a66",
        "1f30af33-6556-11dd-ad8b-0800200c9a66",
        "1f30af34-6556-11dd-ad8b-0800200c9a66",
        "1f30af35-6556-11dd-ad8b-0800200c9a66",
        "1f30af36-6556-11dd-ad8b-0800200c9a66",
        "1f30af37-6556-11dd-ad8b-0800200c9a66"
      ],
      "provenance": {
        "prov:wasGeneratedBy": "flow_layers.pubchem_element_enrichment",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "EF 3.1"
        ],
        "prov:wasDerivedFrom": "ef31.pref_label_element_name_symbol_matches"
      }
    }
  },
  "references": [
    {
      "@id": "gmelin:3",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.chebi_xrefs",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "http://purl.obolibrary.org/obo/CHEBI_18276"
        ],
        "prov:wasDerivedFrom": "chebi.xrefs_urls"
      }
    },
    {
      "@id": "https://chemicalsafety.ilo.org/dyn/icsc/showcard.display?p_card_id=0001",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CID:783;CAS:1333-74-0"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[1333-74-0]"
      }
    },
    {
      "@id": "https://commonchemistry.cas.org/detail?cas_rn=12184-90-6",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CID:783;CAS:1333-74-0"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[1333-74-0]"
      }
    },
    {
      "@id": "https://commonchemistry.cas.org/detail?cas_rn=12184-96-2",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CID:783;CAS:1333-74-0"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[1333-74-0]"
      }
    },
    {
      "@id": "https://commonchemistry.cas.org/detail?cas_rn=12385-13-6",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CID:783;CAS:1333-74-0"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[1333-74-0]"
      }
    },
    {
      "@id": "https://commonchemistry.cas.org/detail?cas_rn=12596-12-2",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CID:783;CAS:1333-74-0"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[1333-74-0]"
      }
    },
    {
      "@id": "https://commonchemistry.cas.org/detail?cas_rn=12596-15-5",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CID:783;CAS:1333-74-0"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[1333-74-0]"
      }
    },
    {
      "@id": "https://commonchemistry.cas.org/detail?cas_rn=1333-74-0",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.chebi_xrefs",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "http://purl.obolibrary.org/obo/CHEBI_18276"
        ],
        "prov:wasDerivedFrom": "chebi.xrefs_urls"
      }
    },
    {
      "@id": "https://comptox.epa.gov/dashboard/DTXSID9029643",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CID:783;CAS:1333-74-0"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[1333-74-0]"
      }
    },
    {
      "@id": "https://dtp.cancer.gov/dtpstandard/servlet/dwindex?searchtype=NSC&outputformat=html&searchlist=356464",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CID:783;CAS:1333-74-0"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[1333-74-0]"
      }
    },
    {
      "@id": "https://en.wikipedia.org/wiki/Hydrogen",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.chebi_xrefs",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "http://purl.obolibrary.org/obo/CHEBI_18276"
        ],
        "prov:wasDerivedFrom": "chebi.xrefs_urls"
      }
    },
    {
      "@id": "https://gsrs.ncats.nih.gov/ginas/app/beta/substances/7YNJ3PO35Z",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CID:783;CAS:1333-74-0"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[1333-74-0]"
      }
    },
    {
      "@id": "https://hmdb.ca/metabolites/HMDB0001362",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.chebi_xrefs",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "http://purl.obolibrary.org/obo/CHEBI_18276"
        ],
        "prov:wasDerivedFrom": "chebi.xrefs_urls"
      }
    },
    {
      "@id": "https://hts.usitc.gov/search?query=2804.10.00.00",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CID:783;CAS:1333-74-0"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[1333-74-0]"
      }
    },
    {
      "@id": "https://metacyc.org/compound?orgid=META&id=HYDROGEN-MOLECULE",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.chebi_xrefs",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "http://purl.obolibrary.org/obo/CHEBI_18276"
        ],
        "prov:wasDerivedFrom": "chebi.xrefs_urls"
      }
    },
    {
      "@id": "https://pubchem.ncbi.nlm.nih.gov/compound/783",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_compound",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CID:783;CAS:1333-74-0"
        ],
        "prov:wasDerivedFrom": "pubchem.by_cas[1333-74-0]"
      }
    },
    {
      "@id": "https://pubchem.ncbi.nlm.nih.gov/erg/#1049",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CID:783;CAS:1333-74-0"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[1333-74-0]"
      }
    },
    {
      "@id": "https://pubchem.ncbi.nlm.nih.gov/erg/#1966",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CID:783;CAS:1333-74-0"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[1333-74-0]"
      }
    },
    {
      "@id": "https://pubmed.ncbi.nlm.nih.gov/15303745",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.chebi_xrefs",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "http://purl.obolibrary.org/obo/CHEBI_18276"
        ],
        "prov:wasDerivedFrom": "chebi.xrefs_urls"
      }
    },
    {
      "@id": "https://pubmed.ncbi.nlm.nih.gov/16517646",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.chebi_xrefs",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "http://purl.obolibrary.org/obo/CHEBI_18276"
        ],
        "prov:wasDerivedFrom": "chebi.xrefs_urls"
      }
    },
    {
      "@id": "https://pubmed.ncbi.nlm.nih.gov/18706888",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.chebi_xrefs",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "http://purl.obolibrary.org/obo/CHEBI_18276"
        ],
        "prov:wasDerivedFrom": "chebi.xrefs_urls"
      }
    },
    {
      "@id": "https://pubmed.ncbi.nlm.nih.gov/19905000",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.chebi_xrefs",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "http://purl.obolibrary.org/obo/CHEBI_18276"
        ],
        "prov:wasDerivedFrom": "chebi.xrefs_urls"
      }
    },
    {
      "@id": "https://pubmed.ncbi.nlm.nih.gov/19908827",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.chebi_xrefs",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "http://purl.obolibrary.org/obo/CHEBI_18276"
        ],
        "prov:wasDerivedFrom": "chebi.xrefs_urls"
      }
    },
    {
      "@id": "https://pubmed.ncbi.nlm.nih.gov/20568549",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.chebi_xrefs",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "http://purl.obolibrary.org/obo/CHEBI_18276"
        ],
        "prov:wasDerivedFrom": "chebi.xrefs_urls"
      }
    },
    {
      "@id": "https://pubmed.ncbi.nlm.nih.gov/24171421",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.chebi_xrefs",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "http://purl.obolibrary.org/obo/CHEBI_18276"
        ],
        "prov:wasDerivedFrom": "chebi.xrefs_urls"
      }
    },
    {
      "@id": "https://www.drugbank.ca/drugs/DB15127",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CID:783;CAS:1333-74-0"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[1333-74-0]"
      }
    },
    {
      "@id": "https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:18276",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.chebi_id_link",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "http://purl.obolibrary.org/obo/CHEBI_18276"
        ],
        "prov:wasDerivedFrom": "chebi.id"
      }
    },
    {
      "@id": "https://www.genome.jp/entry/C00282",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.chebi_xrefs",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "http://purl.obolibrary.org/obo/CHEBI_18276"
        ],
        "prov:wasDerivedFrom": "chebi.xrefs_urls"
      }
    },
    {
      "@id": "https://www.kegg.jp/entry/C00282",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CID:783;CAS:1333-74-0"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[1333-74-0]"
      }
    },
    {
      "@id": "https://www.wikidata.org/wiki/Q3027893",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CID:783;CAS:1333-74-0"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[1333-74-0]"
      }
    },
    {
      "@id": "https://www.wikidata.org/wiki/Q902508",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CID:783;CAS:1333-74-0"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[1333-74-0]"
      }
    },
    {
      "@id": "molbase:748",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.chebi_xrefs",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "http://purl.obolibrary.org/obo/CHEBI_18276"
        ],
        "prov:wasDerivedFrom": "chebi.xrefs_urls"
      }
    },
    {
      "@id": "reaxys:3587189",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.chebi_xrefs",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "http://purl.obolibrary.org/obo/CHEBI_18276"
        ],
        "prov:wasDerivedFrom": "chebi.xrefs_urls"
      }
    }
  ],
  "prefLabel": [
    {
      "@value": "Hydrogen",
      "@language": "en",
      "@lang": "en",
      "source": {
        "prov:wasGeneratedBy": "flow_layers.pubchem_element_enrichment",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "EF 3.1",
          "PubChem"
        ],
        "prov:wasDerivedFrom": "flow_object.prefLabel.titlecase"
      }
    }
  ],
  "@type": [
    "https://w3id.org/chemrof/ChemicalElement"
  ],
  "http://www.w3.org/2004/02/skos/core#definition": [
    {
      "@value": "An elemental molecule consisting of two hydrogens joined by a single bond.",
      "@language": "en",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.chebi_definition",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "http://purl.obolibrary.org/obo/CHEBI_18276"
        ],
        "prov:wasDerivedFrom": "chebi.definition"
      }
    }
  ],
  "uuid": "08a91e70-3ddc-11dd-949e-0050c2490048",
  "identifier": "08a91e70-3ddc-11dd-949e-0050c2490048",
  "source": "EF 3.1",
  "cas_numbers": [
    "1333-74-0"
  ],
  "ec_numbers": [
    "215-605-7"
  ],
  "context": {
    "dimension": "Environmental",
    "media": "Air",
    "strata": "Ground level",
    "population_density": "Urban (>1000 people/square mile)"
  },
  "synonyms": [],
  "lcia_methods": [],
  "unit": "kg",
  "input_datasets": [
    "EF 3.1"
  ],
  "context_iri": "https://vocab.brightway.one/flow-contexts/envi-air-grle-ur10pesq",
  "unit_iri": "https://vocab.brightway.one/units/unit/KiloGM",
  "flow_object_id": "fo-a796b2e0cb454019",
  "concept_associations": [
    {
      "@type": "xkos:ConceptAssociation",
      "xkos:sourceConcept": {
        "@id": "https://vocab.brightway.one/ef/3.1/flow/08a91e70-3ddc-11dd-949e-0050c2490048",
        "skos:prefLabel": "hydrogen",
        "context": "Emissions/Emissions to air/Emissions to urban air close to ground",
        "qudt:hasUnit": {
          "@id": "https://vocab.brightway.one/units/unit/KiloGM"
        },
        "skos:exactMatch": {
          "@id": "https://vocab.brightway.dev/elementary-flows/08a91e70-3ddc-11dd-949e-0050c2490048"
        }
      },
      "xkos:targetConcept": {
        "@id": "https://vocab.brightway.dev/elementary-flows/08a91e70-3ddc-11dd-949e-0050c2490048"
      },
      "provenance": {
        "prov:wasGeneratedBy": "build_concept_associations",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "https://eplca.jrc.ec.europa.eu/permalink/EF3_1/EF-v3.1.zip"
        ]
      }
    },
    {
      "@type": "xkos:ConceptAssociation",
      "xkos:sourceConcept": {
        "@id": "https://vocab.brightway.one/ecoinvent/3.12/flow/8e906def-6bd5-4248-ac2b-94e6eedde3c9",
        "skos:prefLabel": "Hydrogen",
        "context": "air / urban air close to ground",
        "qudt:hasUnit": {
          "@id": "https://vocab.brightway.one/units/unit/KiloGM"
        },
        "skos:exactMatch": {
          "@id": "https://vocab.brightway.dev/elementary-flows/08a91e70-3ddc-11dd-949e-0050c2490048"
        }
      },
      "xkos:targetConcept": {
        "@id": "https://vocab.brightway.dev/elementary-flows/08a91e70-3ddc-11dd-949e-0050c2490048"
      },
      "provenance": {
        "prov:wasGeneratedBy": "merge_ecoinvent",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "ecoinvent:3.12:8e906def-6bd5-4248-ac2b-94e6eedde3c9",
          "Hydrogen",
          "ecoinvent-3.11-biosphere-EF-3.1-biosphere"
        ],
        "prov:wasDerivedFrom": "randonneur_replace_table:prepared_mapping"
      }
    },
    {
      "@type": "xkos:ConceptAssociation",
      "xkos:sourceConcept": {
        "@id": "https://vocab.brightway.one/ecoinvent/3.8/flow/8e906def-6bd5-4248-ac2b-94e6eedde3c9",
        "skos:prefLabel": "Hydrogen",
        "context": "air / urban air close to ground",
        "qudt:hasUnit": {
          "@id": "https://vocab.brightway.one/units/unit/KiloGM"
        },
        "skos:exactMatch": {
          "@id": "https://vocab.brightway.dev/elementary-flows/08a91e70-3ddc-11dd-949e-0050c2490048"
        }
      },
      "xkos:targetConcept": {
        "@id": "https://vocab.brightway.dev/elementary-flows/08a91e70-3ddc-11dd-949e-0050c2490048"
      },
      "provenance": {
        "prov:wasGeneratedBy": "merge_ecoinvent",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "ecoinvent:3.8:8e906def-6bd5-4248-ac2b-94e6eedde3c9",
          "Hydrogen",
          "ecoinvent-3.8-biosphere-EF-3.1-biosphere.json"
        ],
        "prov:wasDerivedFrom": "randonneur_replace_table:prepared_mapping"
      }
    },
    {
      "@type": "xkos:ConceptAssociation",
      "xkos:sourceConcept": {
        "@id": "https://vocab.brightway.one/bafu/2026-v1/flow/ba9a646a-a883-5653-9caa-49a071a049ed",
        "skos:prefLabel": "Hydrogen",
        "context": "emissions to air / high. pop.",
        "qudt:hasUnit": {
          "@id": "https://vocab.brightway.one/units/unit/KiloGM"
        },
        "skos:closeMatch": {
          "@id": "https://vocab.brightway.dev/elementary-flows/08a91e70-3ddc-11dd-949e-0050c2490048"
        }
      },
      "xkos:targetConcept": {
        "@id": "https://vocab.brightway.dev/elementary-flows/08a91e70-3ddc-11dd-949e-0050c2490048"
      },
      "provenance": {
        "prov:wasGeneratedBy": "merge_bafu",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "bafu:2026-v1:ba9a646a-a883-5653-9caa-49a071a049ed",
          "Hydrogen",
          "",
          "algorithm.lookup_order=cas>ec>label",
          "algorithm.basis=cas:1333-74-0",
          "algorithm.flow_object_candidates=1",
          "algorithm.elementary_candidates=12",
          "algorithm.selector_reason=exact-context-iri-match",
          "algorithm.score_rule=exact-iri-shortcircuit;up-tree-filter;score=(2*unit_exact)+context_overlap-context_penalty+context_iri_exact;contradiction-veto"
        ],
        "prov:wasDerivedFrom": "algorithmic_fallback:lookup_order(cas>ec>label);basis(cas:1333-74-0);flow_object_candidates(1);elementary_candidates(12);selector(exact-context-iri-match);exact-iri-shortcircuit;up-tree-filter;score=(2*unit_exact)+context_overlap-context_penalty+context_iri_exact;contradiction-veto"
      }
    }
  ],
  "_sources": {
    "prefLabel": "flow_layers.pubchem_element_enrichment",
    "name": "bootstrap_labels",
    "synonyms": "bootstrap_labels",
    "context": "default_context_mapping",
    "context_iri": "default_context_mapping",
    "unit_iri": "unit_normalization",
    "ec_numbers": "ec_cross_check",
    "properties": "link_flows_to_their_substance",
    "skos_definition": "enrich_references",
    "references": "enrich_references",
    "altLabel": "strip_catalogue_altlabels",
    "cas_match_labels": "consensus_match",
    "concept_associations": "carry_associations_onto_flows",
    "types": "link_flows_to_their_substance"
  },
  "cas_match_labels": {
    "1333-74-0": "exactMatch"
  },
  "_transformed": true,
  "_provided": {
    "name": "hydrogen",
    "synonyms": [
      "AC1L1A0K",
      "Atomic hydrogen",
      "BI3852",
      "Dihydrogen",
      "ETNAM H HYDROGEN ATOM",
      "H2",
      "HYDROGEN-MOLECULE",
      "Hydrogen, atomic",
      "Molecular hydrogen",
      "hydrogen molecule"
    ],
    "context": [
      "Emissions",
      "Emissions to air",
      "Emissions to urban air close to ground"
    ],
    "cas_numbers": [
      "1333-74-0"
    ],
    "ec_numbers": [],
    "unit": "kg"
  }
}

Keyboard

?
Show or hide this map
Esc
Close

More as the sections are built.