1,1,1,2-Tetrafluoroethane

Substance: fo-9a8a2ec4f7948ae5 Neutral molecule
Source: EF 3.1
Unit: kg
Context: Environmental → Air → Medium stack, <150 meters → Rural (<1000 people/square mile)
CAS: 811-97-2
EC: 212-377-0

Dimension: Environmental
Media: Air
Population density: Rural (<1000 people/square mile)
Strata: Medium stack, <150 meters

HFC-134a
1,2,2,2-Tetrafluoroethane
134a
Arcton 134a
Ethane, 1,1,1,2-tetrafluoro-
Forane 134a
Freon 134a
Freon R 134a
Genetron 134a
HFA P134a
Halon 134A
Norflurane
Refrigerant R 134a
SUVA 134a

List	Version	Source flow	Name there	Why this flow
EF	3.1	fe0acd60-3ddc-11dd-a6d5-0050c2490048	1,1,1,2-Tetrafluoroethane	The consensus list is built from this one, so this row is the flow itself rather than something matched to it.
agribalyse	3.2	d44fec00-25ec-5063-aa3a-311b295d6f41	Ethane, 1,1,1,2-tetrafluoro-, HFC-134a	The CAS numbers are the same (811-97-2); both name the same compartment.
bafu	2026-v1	01c1cede-42e8-5f12-8272-06709968c9b7	Ethane, 1,1,1,2-tetrafluoro-, HFC-134a	The CAS numbers are the same (811-97-2); both name the same compartment.
ecoinvent	3.12	16fcd4f9-0bb8-4b84-8334-3ffb1a17aa74	1,1,1,2-Tetrafluoroethane	The CAS numbers are the same (811-97-2); both name the same compartment.
ecoinvent	3.8	16fcd4f9-0bb8-4b84-8334-3ffb1a17aa74	Ethane, 1,1,1,2-tetrafluoro-, HFC-134a	The CAS numbers are the same (811-97-2); both name the same compartment.

Source list	Source flow	Name there	Compartment there	Match	Conversion
EF 3.1	fe0acd60-3ddc-11dd-a6d5-0050c2490048	1,1,1,2-Tetrafluoroethane	Emissions/Emissions to air/Emissions to non-urban air or from high stacks	exactMatch	—
ecoinvent 3.12	16fcd4f9-0bb8-4b84-8334-3ffb1a17aa74	1,1,1,2-Tetrafluoroethane	air / non-urban air or from high stacks	closeMatch	—
ecoinvent 3.8	16fcd4f9-0bb8-4b84-8334-3ffb1a17aa74	Ethane, 1,1,1,2-tetrafluoro-, HFC-134a	air / non-urban air or from high stacks	closeMatch	—
bafu 2026-v1	01c1cede-42e8-5f12-8272-06709968c9b7	Ethane, 1,1,1,2-tetrafluoro-, HFC-134a	emissions to air / low. pop.	closeMatch	—
agribalyse 3.2	d44fec00-25ec-5063-aa3a-311b295d6f41	Ethane, 1,1,1,2-tetrafluoro-, HFC-134a	Emissions to air / low. pop.	closeMatch	—

brightway-flows 12
European Commission — JRC 8
GreenDelta 8
ecoinvent Centre 8

Every implementation that says anything about this flow. Published as is what this list did with the row: where more than one implementation states a number and they agree it publishes it as agreed; where only one speaks, as sole; where they disagree it publishes nothing and asks.

Method	Implementation	Category	Place	Factor	Published as
EF 3.1	European Commission — JRC	Climate change	—	1,530	—
EF 3.1	ecoinvent Centre	Climate change	—	1,526	—
EF 3.1	GreenDelta	Climate change	—	1,530	—
EF 3.1	brightway-flows	Climate change	—	1,526	agreed
EF 3.1	European Commission — JRC	Climate change-Fossil	—	1,530	—
EF 3.1	ecoinvent Centre	Climate change-Fossil	—	1,526	—
EF 3.1	GreenDelta	Climate change-Fossil	—	1,530	—
EF 3.1	brightway-flows	Climate change-Fossil	—	1,526	agreed
EF 3.1	European Commission — JRC	Ecotoxicity, freshwater	—	0.49227	—
EF 3.1	ecoinvent Centre	Ecotoxicity, freshwater	—	0.49227	—
EF 3.1	GreenDelta	Ecotoxicity, freshwater	—	0.49227	—
EF 3.1	brightway-flows	Ecotoxicity, freshwater	—	0.49227	agreed
EF 3.1	European Commission — JRC	Ecotoxicity, freshwater_organics	—	0.49227	—
EF 3.1	ecoinvent Centre	Ecotoxicity, freshwater_organics	—	0.49227	—
EF 3.1	GreenDelta	Ecotoxicity, freshwater_organics	—	0.49227	—
EF 3.1	brightway-flows	Ecotoxicity, freshwater_organics	—	0.49227	agreed
EF 3.1	European Commission — JRC	Human toxicity, cancer	—	1.1263e-08	—
EF 3.1	ecoinvent Centre	Human toxicity, cancer	—	1.1263e-08	—
EF 3.1	GreenDelta	Human toxicity, cancer	—	1.1263e-08	—
EF 3.1	brightway-flows	Human toxicity, cancer	—	1.1263e-08	agreed
EF 3.1	European Commission — JRC	Human toxicity, cancer_organics	—	1.1263e-08	—
EF 3.1	ecoinvent Centre	Human toxicity, cancer_organics	—	1.1263e-08	—
EF 3.1	GreenDelta	Human toxicity, cancer_organics	—	1.1263e-08	—
EF 3.1	brightway-flows	Human toxicity, cancer_organics	—	1.1263e-08	agreed
EF 3.1	European Commission — JRC	Human toxicity, non-cancer	—	4.7668e-10	—
EF 3.1	ecoinvent Centre	Human toxicity, non-cancer	—	4.7668e-10	—
EF 3.1	GreenDelta	Human toxicity, non-cancer	—	4.7668e-10	—
EF 3.1	brightway-flows	Human toxicity, non-cancer	—	4.7668e-10	agreed
EF 3.1	European Commission — JRC	Human toxicity, non-cancer_organics	—	4.7668e-10	—
EF 3.1	ecoinvent Centre	Human toxicity, non-cancer_organics	—	4.7668e-10	—
EF 3.1	GreenDelta	Human toxicity, non-cancer_organics	—	4.7668e-10	—
EF 3.1	brightway-flows	Human toxicity, non-cancer_organics	—	4.7668e-10	agreed
Stepwise 2006	brightway-flows	Ecotoxicity, aquatic	—	0.689333	carried
Stepwise 2006	brightway-flows	Ecotoxicity, terrestrial	—	0.848155	carried
Stepwise 2006	brightway-flows	Global warming, fossil	—	1,526	carried
Stepwise 2006	brightway-flows	Human toxicity, non-carc.	—	0.00361	carried

This flow in the difference report

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.

Flow JSON

{
  "properties": {
    "https://w3id.org/chemrof/molecular_formula": {
      "@id": "https://w3id.org/chemrof/molecular_formula",
      "@value": [
        "C2H2F4"
      ],
      "attested_by": {
        "C2H2F4": [
          "enrich_references.pubchem_semantic",
          "rdkit_post_consensus"
        ]
      },
      "rdfs:label": "Molecular formula",
      "provenance": [
        {
          "prov:wasGeneratedBy": "enrich_references.pubchem_semantic",
          "prov:wasAttributedTo": "brightway-flows",
          "prov:hadPrimarySource": [
            "CID:13129"
          ],
          "prov:wasDerivedFrom": "pubchem.props.Molecular Formula"
        },
        {
          "prov:wasGeneratedBy": "rdkit_post_consensus",
          "prov:wasAttributedTo": "brightway-flows",
          "prov:hadPrimarySource": [
            "FCC(F)(F)F"
          ]
        }
      ]
    },
    "https://w3id.org/chemrof/inchi2d_key_string": {
      "@id": "https://w3id.org/chemrof/inchi2d_key_string",
      "@value": [
        "LVGUZGTVOIAKKC-UHFFFAOYSA-N"
      ],
      "attested_by": {
        "LVGUZGTVOIAKKC-UHFFFAOYSA-N": [
          "enrich_references.pubchem_semantic",
          "rdkit_post_consensus"
        ]
      },
      "rdfs:label": "InChIKey",
      "provenance": [
        {
          "prov:wasGeneratedBy": "enrich_references.pubchem_semantic",
          "prov:wasAttributedTo": "brightway-flows",
          "prov:hadPrimarySource": [
            "CID:13129"
          ],
          "prov:wasDerivedFrom": "pubchem.props.InChIKey"
        },
        {
          "prov:wasGeneratedBy": "rdkit_post_consensus",
          "prov:wasAttributedTo": "brightway-flows",
          "prov:hadPrimarySource": [
            "FCC(F)(F)F"
          ]
        }
      ]
    },
    "https://w3id.org/chemrof/smiles_string": {
      "@id": "https://w3id.org/chemrof/smiles_string",
      "rdfs:label": "SMILES",
      "@value": [
        "FCC(F)(F)F"
      ],
      "provenance": [
        {
          "prov:wasGeneratedBy": "opsin_iupac",
          "prov:wasAttributedTo": "brightway-flows",
          "prov:hadPrimarySource": [
            "1,1,1,2-Tetrafluoroethane"
          ]
        },
        {
          "prov:wasGeneratedBy": "rdkit_post_consensus",
          "prov:wasAttributedTo": "brightway-flows",
          "prov:hadPrimarySource": [
            "FCC(F)(F)F"
          ]
        }
      ],
      "attested_by": {
        "FCC(F)(F)F": [
          "opsin_iupac",
          "rdkit_post_consensus"
        ]
      }
    },
    "https://w3id.org/chemrof/inchi2d_string": {
      "@id": "https://w3id.org/chemrof/inchi2d_string",
      "rdfs:label": "InChI",
      "@value": [
        "InChI=1S/C2H2F4/c3-1-2(4,5)6/h1H2"
      ],
      "provenance": [
        {
          "prov:wasGeneratedBy": "opsin_iupac",
          "prov:wasAttributedTo": "brightway-flows",
          "prov:hadPrimarySource": [
            "1,1,1,2-Tetrafluoroethane"
          ]
        },
        {
          "prov:wasGeneratedBy": "rdkit_post_consensus",
          "prov:wasAttributedTo": "brightway-flows",
          "prov:hadPrimarySource": [
            "FCC(F)(F)F"
          ]
        }
      ],
      "attested_by": {
        "InChI=1S/C2H2F4/c3-1-2(4,5)6/h1H2": [
          "opsin_iupac",
          "rdkit_post_consensus"
        ]
      }
    },
    "https://w3id.org/chemrof/IUPAC_name": {
      "@id": "https://w3id.org/chemrof/IUPAC_name",
      "rdfs:label": "IUPAC name",
      "@value": [
        "1,1,1,2-Tetrafluoroethane"
      ],
      "provenance": {
        "prov:wasGeneratedBy": "opsin_iupac",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "1,1,1,2-Tetrafluoroethane"
        ]
      },
      "attested_by": {
        "1,1,1,2-Tetrafluoroethane": [
          "opsin_iupac"
        ]
      }
    },
    "https://w3id.org/chemrof/molecular_mass": {
      "@id": "https://w3id.org/chemrof/molecular_mass",
      "rdfs:label": "Molecular mass",
      "@value": [
        102.03
      ],
      "provenance": [
        {
          "prov:wasGeneratedBy": "rdkit_pre_consensus",
          "prov:wasAttributedTo": "brightway-flows",
          "prov:hadPrimarySource": [
            "C(C(F)(F)F)F"
          ]
        },
        {
          "prov:wasGeneratedBy": "rdkit_post_consensus",
          "prov:wasAttributedTo": "brightway-flows",
          "prov:hadPrimarySource": [
            "FCC(F)(F)F"
          ]
        }
      ],
      "attested_by": {
        "102.03": [
          "rdkit_post_consensus",
          "rdkit_pre_consensus"
        ]
      },
      "http://qudt.org/schema/qudt/hasUnit": "https://vocab.brightway.one/units/unit/GM-PER-MOL"
    },
    "https://w3id.org/chemrof/monoisotopic_mass": {
      "@id": "https://w3id.org/chemrof/monoisotopic_mass",
      "rdfs:label": "Monoisotopic mass",
      "@value": [
        102.009263
      ],
      "provenance": [
        {
          "prov:wasGeneratedBy": "rdkit_pre_consensus",
          "prov:wasAttributedTo": "brightway-flows",
          "prov:hadPrimarySource": [
            "C(C(F)(F)F)F"
          ]
        },
        {
          "prov:wasGeneratedBy": "rdkit_post_consensus",
          "prov:wasAttributedTo": "brightway-flows",
          "prov:hadPrimarySource": [
            "FCC(F)(F)F"
          ]
        }
      ],
      "attested_by": {
        "102.009263": [
          "rdkit_post_consensus",
          "rdkit_pre_consensus"
        ]
      },
      "http://qudt.org/schema/qudt/hasUnit": "https://vocab.brightway.one/units/unit/GM-PER-MOL"
    }
  },
  "references": [
    {
      "@id": "http://jglobal.jst.go.jp/en/redirect?Nikkaji_No=J7.107B",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "CID:13129;CAS:811-97-2"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[811-97-2]"
      }
    },
    {
      "@id": "https://chem.echa.europa.eu/100.011.252",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "CID:13129;CAS:811-97-2"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[811-97-2]"
      }
    },
    {
      "@id": "https://chemicalsafety.ilo.org/dyn/icsc/showcard.display?p_card_id=1281",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "CID:13129;CAS:811-97-2"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[811-97-2]"
      }
    },
    {
      "@id": "https://commonchemistry.cas.org/detail?cas_rn=811-97-2",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.consensus_cas_link",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "811-97-2"
        ],
        "prov:wasDerivedFrom": "cas_numbers"
      }
    },
    {
      "@id": "https://comptox.epa.gov/dashboard/DTXSID1021324",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "CID:13129;CAS:811-97-2"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[811-97-2]"
      }
    },
    {
      "@id": "https://en.wikipedia.org/wiki/1,1,1,2-Tetrafluoroethane",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "CID:13129;CAS:811-97-2"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[811-97-2]"
      }
    },
    {
      "@id": "https://gsrs.ncats.nih.gov/ginas/app/beta/substances/DH9E53K1Y8",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "CID:13129;CAS:811-97-2"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[811-97-2]"
      }
    },
    {
      "@id": "https://hmdb.ca/metabolites/HMDB0244035",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "CID:13129;CAS:811-97-2"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[811-97-2]"
      }
    },
    {
      "@id": "https://ncithesaurus.nci.nih.gov/ncitbrowser/ConceptReport.jsp?dictionary=NCI_Thesaurus&ns=ncit&code=C77482",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "CID:13129;CAS:811-97-2"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[811-97-2]"
      }
    },
    {
      "@id": "https://platform.opentargets.org/drug/CHEMBL2104432",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "CID:13129;CAS:811-97-2"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[811-97-2]"
      }
    },
    {
      "@id": "https://pubchem.ncbi.nlm.nih.gov/compound/13129",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_compound",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "CID:13129;CAS:811-97-2"
        ],
        "prov:wasDerivedFrom": "pubchem.by_cas[811-97-2]"
      }
    },
    {
      "@id": "https://pubchem.ncbi.nlm.nih.gov/erg/#3159",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "CID:13129;CAS:811-97-2"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[811-97-2]"
      }
    },
    {
      "@id": "https://rxnav.nlm.nih.gov/id/rxnorm/1311560",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "CID:13129;CAS:811-97-2"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[811-97-2]"
      }
    },
    {
      "@id": "https://www.drugbank.ca/drugs/DB13116",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "CID:13129;CAS:811-97-2"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[811-97-2]"
      }
    },
    {
      "@id": "https://www.ebi.ac.uk/chembl/explore/compound/CHEMBL2104432",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "CID:13129;CAS:811-97-2"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[811-97-2]"
      }
    },
    {
      "@id": "https://www.kegg.jp/entry/D05208",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "CID:13129;CAS:811-97-2"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[811-97-2]"
      }
    },
    {
      "@id": "https://www.metabolomicsworkbench.org/data/StructureData.php?RegNo=153982",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "CID:13129;CAS:811-97-2"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[811-97-2]"
      }
    },
    {
      "@id": "https://www.wikidata.org/wiki/Q423029",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "CID:13129;CAS:811-97-2"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[811-97-2]"
      }
    }
  ],
  "prefLabel": [
    {
      "@value": "1,1,1,2-Tetrafluoroethane",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "bootstrap_labels",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "EF 3.1"
        ],
        "prov:wasDerivedFrom": "legacy name field"
      }
    }
  ],
  "@type": [
    "https://w3id.org/chemrof/NeutralMolecule"
  ],
  "http://www.w3.org/2004/02/skos/core#definition": [],
  "uuid": "fe0acd60-3ddc-11dd-a6d5-0050c2490048",
  "identifier": "fe0acd60-3ddc-11dd-a6d5-0050c2490048",
  "source": "EF 3.1",
  "cas_numbers": [
    "811-97-2"
  ],
  "ec_numbers": [
    "212-377-0"
  ],
  "context": {
    "dimension": "Environmental",
    "media": "Air",
    "strata": "Medium stack, <150 meters",
    "population_density": "Rural (<1000 people/square mile)"
  },
  "synonyms": [],
  "lcia_methods": [
    {
      "method_uuid": "05316e7a-b254-4bea-9cf0-6bf33eb5c630",
      "name": "Ecotoxicity, freshwater",
      "methodology": "Environmental Footprint",
      "impact_category": "Aquatic eco-toxicity",
      "impact_indicator": "Comparative Toxic Unit for ecosystems (CTUe) ",
      "characterization_factor": 0.49227
    },
    {
      "method_uuid": "2299222a-bbd8-474f-9d4f-4dd1f18aea7c",
      "name": "Human toxicity, cancer",
      "methodology": "Environmental Footprint",
      "impact_category": "Cancer human health effects",
      "impact_indicator": "Comparative Toxic Unit for human (CTUh) ",
      "characterization_factor": 1.1263e-8
    },
    {
      "method_uuid": "6209b35f-9447-40b5-b68c-a1099e3674a0",
      "name": "Climate change",
      "methodology": "Environmental Footprint",
      "impact_category": "Climate change",
      "impact_indicator": "Radiative forcing as Global Warming Potential (GWP100)",
      "characterization_factor": 1530.0
    },
    {
      "method_uuid": "7cfdcfcf-b222-4b26-888a-a55f9fbf7ac8",
      "name": "Human toxicity, non-cancer",
      "methodology": "Environmental Footprint",
      "impact_category": "Non-cancer human health effects",
      "impact_indicator": "Comparative Toxic Unit for human (CTUh)",
      "characterization_factor": 4.7668e-10
    },
    {
      "method_uuid": "7fce5b3a-66b8-4ce1-91e8-a925aee1f186",
      "name": "Climate change-Fossil",
      "methodology": "Environmental Footprint",
      "impact_category": "Climate change",
      "impact_indicator": "Radiative forcing as Global Warming Potential (GWP100)",
      "characterization_factor": 1530.0
    },
    {
      "method_uuid": "8c3141e9-1f15-43b5-bff2-182e49893a46",
      "name": "Human toxicity, non-cancer_organics",
      "methodology": "Environmental Footprint",
      "impact_category": "Non-cancer human health effects",
      "impact_indicator": "Comparative Toxic Unit for human (CTUh)",
      "characterization_factor": 4.7668e-10
    },
    {
      "method_uuid": "503699e0-eca9-4089-8bf8-e0f49c93e578",
      "name": "Human toxicity, cancer_organics",
      "methodology": "Environmental Footprint",
      "impact_category": "Cancer human health effects",
      "impact_indicator": "Comparative Toxic Unit for human (CTUh) ",
      "characterization_factor": 1.1263e-8
    },
    {
      "method_uuid": "fd530f00-9325-424a-92ef-aaac67922fd9",
      "name": "Ecotoxicity, freshwater_organics",
      "methodology": "Environmental Footprint",
      "impact_category": "Aquatic eco-toxicity",
      "impact_indicator": "Comparative Toxic Unit for ecosystems (CTUe) ",
      "characterization_factor": 0.49227
    }
  ],
  "unit": "kg",
  "input_datasets": [
    "EF 3.1"
  ],
  "altLabel": [
    {
      "@value": "HFC-134a",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "manual_fixes",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "EF 3.1"
        ],
        "prov:wasDerivedFrom": "name the fix replaced, retained as altLabel"
      }
    },
    {
      "@value": "1,2,2,2-Tetrafluoroethane",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "consensus_match",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "CAS:811-97-2",
          "https://commonchemistry.cas.org/detail?cas_rn=811-97-2"
        ],
        "prov:wasDerivedFrom": "common chemistry CAS lookup"
      }
    },
    {
      "@value": "134a",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "consensus_match",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "CAS:811-97-2",
          "https://commonchemistry.cas.org/detail?cas_rn=811-97-2"
        ],
        "prov:wasDerivedFrom": "common chemistry CAS lookup"
      }
    },
    {
      "@value": "Arcton 134a",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "consensus_match",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "CAS:811-97-2",
          "https://commonchemistry.cas.org/detail?cas_rn=811-97-2"
        ],
        "prov:wasDerivedFrom": "common chemistry CAS lookup"
      }
    },
    {
      "@value": "Ethane, 1,1,1,2-tetrafluoro-",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "consensus_match",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "CAS:811-97-2",
          "https://commonchemistry.cas.org/detail?cas_rn=811-97-2"
        ],
        "prov:wasDerivedFrom": "common chemistry CAS lookup"
      }
    },
    {
      "@value": "Forane 134a",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "consensus_match",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "CAS:811-97-2",
          "https://commonchemistry.cas.org/detail?cas_rn=811-97-2"
        ],
        "prov:wasDerivedFrom": "common chemistry CAS lookup"
      }
    },
    {
      "@value": "Freon 134a",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "consensus_match",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "CAS:811-97-2",
          "https://commonchemistry.cas.org/detail?cas_rn=811-97-2"
        ],
        "prov:wasDerivedFrom": "common chemistry CAS lookup"
      }
    },
    {
      "@value": "Freon R 134a",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "consensus_match",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "CAS:811-97-2",
          "https://commonchemistry.cas.org/detail?cas_rn=811-97-2"
        ],
        "prov:wasDerivedFrom": "common chemistry CAS lookup"
      }
    },
    {
      "@value": "Genetron 134a",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "consensus_match",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "CAS:811-97-2",
          "https://commonchemistry.cas.org/detail?cas_rn=811-97-2"
        ],
        "prov:wasDerivedFrom": "common chemistry CAS lookup"
      }
    },
    {
      "@value": "HFA P134a",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "consensus_match",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "CAS:811-97-2",
          "https://commonchemistry.cas.org/detail?cas_rn=811-97-2"
        ],
        "prov:wasDerivedFrom": "common chemistry CAS lookup"
      }
    },
    {
      "@value": "Halon 134A",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "consensus_match",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "CAS:811-97-2",
          "https://commonchemistry.cas.org/detail?cas_rn=811-97-2"
        ],
        "prov:wasDerivedFrom": "common chemistry CAS lookup"
      }
    },
    {
      "@value": "Norflurane",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "consensus_match",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "CAS:811-97-2",
          "https://commonchemistry.cas.org/detail?cas_rn=811-97-2"
        ],
        "prov:wasDerivedFrom": "common chemistry CAS lookup"
      }
    },
    {
      "@value": "Refrigerant R 134a",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "consensus_match",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "CAS:811-97-2",
          "https://commonchemistry.cas.org/detail?cas_rn=811-97-2"
        ],
        "prov:wasDerivedFrom": "common chemistry CAS lookup"
      }
    },
    {
      "@value": "SUVA 134a",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "consensus_match",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "CAS:811-97-2",
          "https://commonchemistry.cas.org/detail?cas_rn=811-97-2"
        ],
        "prov:wasDerivedFrom": "common chemistry CAS lookup"
      }
    }
  ],
  "context_iri": "https://vocab.brightway.one/flow-contexts/envi-air-mest15me-ru10pesq",
  "unit_iri": "https://vocab.brightway.one/units/unit/KiloGM",
  "flow_object_id": "fo-9a8a2ec4f7948ae5",
  "concept_associations": [
    {
      "@type": "xkos:ConceptAssociation",
      "xkos:sourceConcept": {
        "@id": "https://vocab.brightway.one/ef/3.1/flow/fe0acd60-3ddc-11dd-a6d5-0050c2490048",
        "skos:prefLabel": "1,1,1,2-Tetrafluoroethane",
        "context": "Emissions/Emissions to air/Emissions to non-urban air or from high stacks",
        "qudt:hasUnit": {
          "@id": "https://vocab.brightway.one/units/unit/KiloGM"
        },
        "skos:exactMatch": {
          "@id": "https://vocab.brightway.dev/elementary-flows/fe0acd60-3ddc-11dd-a6d5-0050c2490048"
        }
      },
      "xkos:targetConcept": {
        "@id": "https://vocab.brightway.dev/elementary-flows/fe0acd60-3ddc-11dd-a6d5-0050c2490048"
      },
      "provenance": {
        "prov:wasGeneratedBy": "build_concept_associations",
        "prov:wasAttributedTo": "brightway-flows",
        "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/16fcd4f9-0bb8-4b84-8334-3ffb1a17aa74",
        "skos:prefLabel": "1,1,1,2-Tetrafluoroethane",
        "context": "air / non-urban air or from high stacks",
        "qudt:hasUnit": {
          "@id": "https://vocab.brightway.one/units/unit/KiloGM"
        },
        "skos:closeMatch": {
          "@id": "https://vocab.brightway.dev/elementary-flows/fe0acd60-3ddc-11dd-a6d5-0050c2490048"
        }
      },
      "xkos:targetConcept": {
        "@id": "https://vocab.brightway.dev/elementary-flows/fe0acd60-3ddc-11dd-a6d5-0050c2490048"
      },
      "provenance": {
        "prov:wasGeneratedBy": "merge_ecoinvent",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "ecoinvent:3.12:16fcd4f9-0bb8-4b84-8334-3ffb1a17aa74",
          "1,1,1,2-Tetrafluoroethane",
          "",
          "algorithm.lookup_order=cas>ec>label",
          "algorithm.basis=cas:811-97-2",
          "algorithm.flow_object_candidates=1",
          "algorithm.elementary_candidates=13",
          "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:811-97-2);flow_object_candidates(1);elementary_candidates(13);selector(exact-context-iri-match);exact-iri-shortcircuit;up-tree-filter;score=(2*unit_exact)+context_overlap-context_penalty+context_iri_exact;contradiction-veto"
      }
    },
    {
      "@type": "xkos:ConceptAssociation",
      "xkos:sourceConcept": {
        "@id": "https://vocab.brightway.one/ecoinvent/3.8/flow/16fcd4f9-0bb8-4b84-8334-3ffb1a17aa74",
        "skos:prefLabel": "Ethane, 1,1,1,2-tetrafluoro-, HFC-134a",
        "context": "air / non-urban air or from high stacks",
        "qudt:hasUnit": {
          "@id": "https://vocab.brightway.one/units/unit/KiloGM"
        },
        "skos:closeMatch": {
          "@id": "https://vocab.brightway.dev/elementary-flows/fe0acd60-3ddc-11dd-a6d5-0050c2490048"
        }
      },
      "xkos:targetConcept": {
        "@id": "https://vocab.brightway.dev/elementary-flows/fe0acd60-3ddc-11dd-a6d5-0050c2490048"
      },
      "provenance": {
        "prov:wasGeneratedBy": "merge_ecoinvent",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "ecoinvent:3.8:16fcd4f9-0bb8-4b84-8334-3ffb1a17aa74",
          "Ethane, 1,1,1,2-tetrafluoro-, HFC-134a",
          "",
          "algorithm.lookup_order=cas>ec>label",
          "algorithm.basis=cas:811-97-2",
          "algorithm.flow_object_candidates=1",
          "algorithm.elementary_candidates=13",
          "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:811-97-2);flow_object_candidates(1);elementary_candidates(13);selector(exact-context-iri-match);exact-iri-shortcircuit;up-tree-filter;score=(2*unit_exact)+context_overlap-context_penalty+context_iri_exact;contradiction-veto"
      }
    },
    {
      "@type": "xkos:ConceptAssociation",
      "xkos:sourceConcept": {
        "@id": "https://vocab.brightway.one/bafu/2026-v1/flow/01c1cede-42e8-5f12-8272-06709968c9b7",
        "skos:prefLabel": "Ethane, 1,1,1,2-tetrafluoro-, HFC-134a",
        "context": "emissions to air / low. pop.",
        "qudt:hasUnit": {
          "@id": "https://vocab.brightway.one/units/unit/KiloGM"
        },
        "skos:closeMatch": {
          "@id": "https://vocab.brightway.dev/elementary-flows/fe0acd60-3ddc-11dd-a6d5-0050c2490048"
        }
      },
      "xkos:targetConcept": {
        "@id": "https://vocab.brightway.dev/elementary-flows/fe0acd60-3ddc-11dd-a6d5-0050c2490048"
      },
      "provenance": {
        "prov:wasGeneratedBy": "merge_bafu",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "bafu:2026-v1:01c1cede-42e8-5f12-8272-06709968c9b7",
          "Ethane, 1,1,1,2-tetrafluoro-, HFC-134a",
          "",
          "algorithm.lookup_order=cas>ec>label",
          "algorithm.basis=cas:811-97-2",
          "algorithm.flow_object_candidates=1",
          "algorithm.elementary_candidates=13",
          "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:811-97-2);flow_object_candidates(1);elementary_candidates(13);selector(exact-context-iri-match);exact-iri-shortcircuit;up-tree-filter;score=(2*unit_exact)+context_overlap-context_penalty+context_iri_exact;contradiction-veto"
      }
    },
    {
      "@type": "xkos:ConceptAssociation",
      "xkos:sourceConcept": {
        "@id": "https://vocab.brightway.one/agribalyse/3.2/flow/d44fec00-25ec-5063-aa3a-311b295d6f41",
        "skos:prefLabel": "Ethane, 1,1,1,2-tetrafluoro-, HFC-134a",
        "context": "Emissions to air / low. pop.",
        "qudt:hasUnit": {
          "@id": "https://vocab.brightway.one/units/unit/KiloGM"
        },
        "skos:closeMatch": {
          "@id": "https://vocab.brightway.dev/elementary-flows/fe0acd60-3ddc-11dd-a6d5-0050c2490048"
        }
      },
      "xkos:targetConcept": {
        "@id": "https://vocab.brightway.dev/elementary-flows/fe0acd60-3ddc-11dd-a6d5-0050c2490048"
      },
      "provenance": {
        "prov:wasGeneratedBy": "merge_agribalyse",
        "prov:wasAttributedTo": "brightway-flows",
        "prov:hadPrimarySource": [
          "agribalyse:3.2:d44fec00-25ec-5063-aa3a-311b295d6f41",
          "Ethane, 1,1,1,2-tetrafluoro-, HFC-134a",
          "",
          "algorithm.lookup_order=cas>ec>label",
          "algorithm.basis=cas:811-97-2",
          "algorithm.flow_object_candidates=1",
          "algorithm.elementary_candidates=14",
          "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:811-97-2);flow_object_candidates(1);elementary_candidates(14);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": "bootstrap_labels",
    "name": "bootstrap_labels",
    "synonyms": "bootstrap_labels",
    "context": "default_context_mapping",
    "context_iri": "default_context_mapping",
    "unit_iri": "unit_normalization",
    "properties": "normalise_property_values",
    "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": {
    "811-97-2": "exactMatch"
  },
  "_transformed": true,
  "_provided": {
    "name": "1,1,1,2-Tetrafluoroethane",
    "synonyms": [
      "1,1,1,2-TETRAFLUOROETHANE",
      "1,1,1,2-Tetrafluorethan",
      "1,2,2,2-Tetrafluoroethane",
      "AC1L213C",
      "AC1Q4OQC",
      "Arcton 134a",
      "Ethane, 1,1,1,2-tetrafluoro-",
      "Ethane, tetrafluoro-",
      "F 134a",
      "FC 134a",
      "FC-134a",
      "Fron 134a",
      "GR 106642X",
      "HCFC 134a",
      "HFA 134a",
      "HFC 134a",
      "HFC134a",
      "Khladon 134a",
      "Norflurane",
      "Norflurano",
      "Norfluranum",
      "PC6756",
      "R 134a",
      "R-134a",
      "Refrigerant R134a",
      "T1476",
      "TG 134a",
      "sGPBAHJPtaYCHiCUP@"
    ],
    "context": [
      "Emissions",
      "Emissions to air",
      "Emissions to non-urban air or from high stacks"
    ],
    "cas_numbers": [
      "811-97-2"
    ],
    "ec_numbers": [
      "212-377-0"
    ],
    "unit": "kg"
  }
}

A flow can be wrong in three ways, and they are decided differently. Pick the one that matches what you are looking at.

You do not need to run a build or clone anything. Name the row and say what your evidence is; the measurement is done for you. How contributing works

1,1,1,2-Tetrafluoroethane

Identity

Context

Alternative labels

Source lists

Concept associations

Characterisation factors

History

Full record

Something wrong here?

Keyboard