1,1-Difluoroethane

Substance: fo-69dd3b89d69d6be5 NeutralMolecule
Source: EF 3.1
Unit: kg
Context: Environmental → Air → Ground level → Urban (>1000 people/square mile)
CAS: 75-37-6
EC: 200-866-1

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

HFC-152a
152a
Algofrene 67
Ethane, 1,1-difluoro-
Ethylidene fluoride
Formacel Z 2
Freon R 152a
Genetron 152A

List	Version	Source flow	Name there	Why this flow
EF	3.1	08a91e70-3ddc-11dd-930b-0050c2490048	1,1-Difluoroethane	The consensus list is built from this one, so this row is the flow itself rather than something matched to it.
bafu	2026-v1	37f24ad3-effe-56ab-bd0b-812f2f586c0b	Ethane, 1,1-difluoro-, HFC-152a	The CAS numbers are the same (75-37-6); both name the same compartment.
ecoinvent	3.12	393d0862-04cc-45ae-8d08-9dc2a4461b35	1,1-Difluoroethane	A curator's mapping table (ecoinvent-3.11-biosphere-EF-3.1-biosphere) names this flow.
ecoinvent	3.8	393d0862-04cc-45ae-8d08-9dc2a4461b35	Ethane, 1,1-difluoro-, HFC-152a	A curator's mapping table (ecoinvent-3.8-biosphere-EF-3.1-biosphere.json) names this flow.

Source list	Source flow	Name there	Compartment there	Match	Conversion
EF 3.1	08a91e70-3ddc-11dd-930b-0050c2490048	1,1-Difluoroethane	Emissions/Emissions to air/Emissions to urban air close to ground	exactMatch	—
ecoinvent 3.12	393d0862-04cc-45ae-8d08-9dc2a4461b35	1,1-Difluoroethane	air / urban air close to ground	exactMatch	—
ecoinvent 3.8	393d0862-04cc-45ae-8d08-9dc2a4461b35	Ethane, 1,1-difluoro-, HFC-152a	air / urban air close to ground	exactMatch	—
bafu 2026-v1	37f24ad3-effe-56ab-bd0b-812f2f586c0b	Ethane, 1,1-difluoro-, HFC-152a	emissions to air / high. pop.	closeMatch	—

consensus-flow-list 6
European Commission — JRC 6
ecoinvent Centre 6

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	—	164	—
EF 3.1	ecoinvent Centre	Climate change	—	164	—
EF 3.1	consensus-flow-list	Climate change	—	164	agreed
EF 3.1	European Commission — JRC	Climate change-Fossil	—	164	—
EF 3.1	ecoinvent Centre	Climate change-Fossil	—	164	—
EF 3.1	consensus-flow-list	Climate change-Fossil	—	164	agreed
EF 3.1	European Commission — JRC	Ecotoxicity, freshwater	—	0.53771	—
EF 3.1	ecoinvent Centre	Ecotoxicity, freshwater	—	0.53771	—
EF 3.1	consensus-flow-list	Ecotoxicity, freshwater	—	0.53771	agreed
EF 3.1	European Commission — JRC	Ecotoxicity, freshwater_organics	—	0.53771	—
EF 3.1	ecoinvent Centre	Ecotoxicity, freshwater_organics	—	0.53771	—
EF 3.1	consensus-flow-list	Ecotoxicity, freshwater_organics	—	0.53771	agreed
EF 3.1	European Commission — JRC	Human toxicity, non-cancer	—	2.3929e-10	—
EF 3.1	ecoinvent Centre	Human toxicity, non-cancer	—	2.3929e-10	—
EF 3.1	consensus-flow-list	Human toxicity, non-cancer	—	2.3929e-10	agreed
EF 3.1	European Commission — JRC	Human toxicity, non-cancer_organics	—	2.3929e-10	—
EF 3.1	ecoinvent Centre	Human toxicity, non-cancer_organics	—	2.3929e-10	—
EF 3.1	consensus-flow-list	Human toxicity, non-cancer_organics	—	2.3929e-10	agreed

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": [
        "C2H4F2"
      ],
      "attested_by": {
        "C2H4F2": [
          "enrich_references.pubchem_semantic",
          "rdkit_post_consensus"
        ]
      },
      "rdfs:label": "Molecular formula",
      "provenance": [
        {
          "prov:wasGeneratedBy": "enrich_references.pubchem_semantic",
          "prov:wasAttributedTo": "consensus-flow-list",
          "prov:hadPrimarySource": [
            "CID:6368"
          ],
          "prov:wasDerivedFrom": "pubchem.props.Molecular Formula"
        },
        {
          "prov:wasGeneratedBy": "rdkit_post_consensus",
          "prov:wasAttributedTo": "consensus-flow-list",
          "prov:hadPrimarySource": [
            "CC(F)F"
          ]
        }
      ]
    },
    "https://w3id.org/chemrof/inchi2d_key_string": {
      "@id": "https://w3id.org/chemrof/inchi2d_key_string",
      "@value": [
        "NPNPZTNLOVBDOC-UHFFFAOYSA-N"
      ],
      "attested_by": {
        "NPNPZTNLOVBDOC-UHFFFAOYSA-N": [
          "enrich_references.pubchem_semantic",
          "rdkit_post_consensus"
        ]
      },
      "rdfs:label": "InChIKey",
      "provenance": [
        {
          "prov:wasGeneratedBy": "enrich_references.pubchem_semantic",
          "prov:wasAttributedTo": "consensus-flow-list",
          "prov:hadPrimarySource": [
            "CID:6368"
          ],
          "prov:wasDerivedFrom": "pubchem.props.InChIKey"
        },
        {
          "prov:wasGeneratedBy": "rdkit_post_consensus",
          "prov:wasAttributedTo": "consensus-flow-list",
          "prov:hadPrimarySource": [
            "CC(F)F"
          ]
        }
      ]
    },
    "https://w3id.org/chemrof/smiles_string": {
      "@id": "https://w3id.org/chemrof/smiles_string",
      "rdfs:label": "SMILES",
      "@value": [
        "CC(F)F"
      ],
      "provenance": [
        {
          "prov:wasGeneratedBy": "opsin_iupac",
          "prov:wasAttributedTo": "consensus-flow-list",
          "prov:hadPrimarySource": [
            "1,1-Difluoroethane"
          ]
        },
        {
          "prov:wasGeneratedBy": "rdkit_post_consensus",
          "prov:wasAttributedTo": "consensus-flow-list",
          "prov:hadPrimarySource": [
            "CC(F)F"
          ]
        }
      ],
      "attested_by": {
        "CC(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/C2H4F2/c1-2(3)4/h2H,1H3"
      ],
      "provenance": [
        {
          "prov:wasGeneratedBy": "opsin_iupac",
          "prov:wasAttributedTo": "consensus-flow-list",
          "prov:hadPrimarySource": [
            "1,1-Difluoroethane"
          ]
        },
        {
          "prov:wasGeneratedBy": "rdkit_post_consensus",
          "prov:wasAttributedTo": "consensus-flow-list",
          "prov:hadPrimarySource": [
            "CC(F)F"
          ]
        }
      ],
      "attested_by": {
        "InChI=1S/C2H4F2/c1-2(3)4/h2H,1H3": [
          "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-Difluoroethane"
      ],
      "provenance": {
        "prov:wasGeneratedBy": "opsin_iupac",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "1,1-Difluoroethane"
        ]
      },
      "attested_by": {
        "1,1-Difluoroethane": [
          "opsin_iupac"
        ]
      }
    },
    "https://w3id.org/chemrof/molecular_mass": {
      "@id": "https://w3id.org/chemrof/molecular_mass",
      "rdfs:label": "Molecular mass",
      "@value": [
        66.05
      ],
      "provenance": [
        {
          "prov:wasGeneratedBy": "rdkit_pre_consensus",
          "prov:wasAttributedTo": "consensus-flow-list",
          "prov:hadPrimarySource": [
            "CC(F)F"
          ]
        },
        {
          "prov:wasGeneratedBy": "rdkit_post_consensus",
          "prov:wasAttributedTo": "consensus-flow-list",
          "prov:hadPrimarySource": [
            "CC(F)F"
          ]
        }
      ],
      "attested_by": {
        "66.05": [
          "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": [
        66.028107
      ],
      "provenance": [
        {
          "prov:wasGeneratedBy": "rdkit_pre_consensus",
          "prov:wasAttributedTo": "consensus-flow-list",
          "prov:hadPrimarySource": [
            "CC(F)F"
          ]
        },
        {
          "prov:wasGeneratedBy": "rdkit_post_consensus",
          "prov:wasAttributedTo": "consensus-flow-list",
          "prov:hadPrimarySource": [
            "CC(F)F"
          ]
        }
      ],
      "attested_by": {
        "66.028107": [
          "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=J2.819C",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CID:6368;CAS:75-37-6"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[75-37-6]"
      }
    },
    {
      "@id": "https://chem.echa.europa.eu/100.000.788",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CID:6368;CAS:75-37-6"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[75-37-6]"
      }
    },
    {
      "@id": "https://chem.echa.europa.eu/100.213.334",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CID:6368;CAS:75-37-6"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[75-37-6]"
      }
    },
    {
      "@id": "https://chemicalsafety.ilo.org/dyn/icsc/showcard.display?p_card_id=1729",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CID:6368;CAS:75-37-6"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[75-37-6]"
      }
    },
    {
      "@id": "https://commonchemistry.cas.org/detail?cas_rn=25497-28-3",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CID:6368;CAS:75-37-6"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[75-37-6]"
      }
    },
    {
      "@id": "https://commonchemistry.cas.org/detail?cas_rn=75-37-6",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.consensus_cas_link",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "75-37-6"
        ],
        "prov:wasDerivedFrom": "cas_numbers"
      }
    },
    {
      "@id": "https://comptox.epa.gov/dashboard/DTXSID0024050",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CID:6368;CAS:75-37-6"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[75-37-6]"
      }
    },
    {
      "@id": "https://en.wikipedia.org/wiki/1,1-Difluoroethane",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CID:6368;CAS:75-37-6"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[75-37-6]"
      }
    },
    {
      "@id": "https://gsrs.ncats.nih.gov/ginas/app/beta/substances/0B1U8K2ME0",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CID:6368;CAS:75-37-6"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[75-37-6]"
      }
    },
    {
      "@id": "https://hmdb.ca/metabolites/HMDB0244022",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CID:6368;CAS:75-37-6"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[75-37-6]"
      }
    },
    {
      "@id": "https://hts.usitc.gov/search?query=2903.43.10.00",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CID:6368;CAS:75-37-6"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[75-37-6]"
      }
    },
    {
      "@id": "https://pubchem.ncbi.nlm.nih.gov/compound/6368",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_compound",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CID:6368;CAS:75-37-6"
        ],
        "prov:wasDerivedFrom": "pubchem.by_cas[75-37-6]"
      }
    },
    {
      "@id": "https://pubchem.ncbi.nlm.nih.gov/erg/#1030",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CID:6368;CAS:75-37-6"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[75-37-6]"
      }
    },
    {
      "@id": "https://rxnav.nlm.nih.gov/id/rxnorm/1305515",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CID:6368;CAS:75-37-6"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[75-37-6]"
      }
    },
    {
      "@id": "https://www.ebi.ac.uk/chembl/explore/compound/CHEMBL325493",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CID:6368;CAS:75-37-6"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[75-37-6]"
      }
    },
    {
      "@id": "https://www.wikidata.org/wiki/Q161285",
      "provenance": {
        "prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CID:6368;CAS:75-37-6"
        ],
        "prov:wasDerivedFrom": "pubchem.identifiers[75-37-6]"
      }
    }
  ],
  "prefLabel": [
    {
      "@value": "1,1-Difluoroethane",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "bootstrap_labels",
        "prov:wasAttributedTo": "consensus-flow-list",
        "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": "08a91e70-3ddc-11dd-930b-0050c2490048",
  "identifier": "08a91e70-3ddc-11dd-930b-0050c2490048",
  "source": "EF 3.1",
  "cas_numbers": [
    "75-37-6"
  ],
  "ec_numbers": [
    "200-866-1"
  ],
  "context": {
    "dimension": "Environmental",
    "media": "Air",
    "strata": "Ground level",
    "population_density": "Urban (>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": 0.53771
    },
    {
      "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": 164.0
    },
    {
      "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": 2.3929e-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": 164.0
    },
    {
      "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": 2.3929e-10
    },
    {
      "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": 0.53771
    }
  ],
  "unit": "kg",
  "input_datasets": [
    "EF 3.1"
  ],
  "altLabel": [
    {
      "@value": "HFC-152a",
      "@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": "152a",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "consensus_match",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CAS:75-37-6",
          "https://commonchemistry.cas.org/detail?cas_rn=75-37-6"
        ],
        "prov:wasDerivedFrom": "common chemistry CAS lookup"
      }
    },
    {
      "@value": "Algofrene 67",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "consensus_match",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CAS:75-37-6",
          "https://commonchemistry.cas.org/detail?cas_rn=75-37-6"
        ],
        "prov:wasDerivedFrom": "common chemistry CAS lookup"
      }
    },
    {
      "@value": "Ethane, 1,1-difluoro-",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "consensus_match",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CAS:75-37-6",
          "https://commonchemistry.cas.org/detail?cas_rn=75-37-6"
        ],
        "prov:wasDerivedFrom": "common chemistry CAS lookup"
      }
    },
    {
      "@value": "Ethylidene fluoride",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "consensus_match",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CAS:75-37-6",
          "https://commonchemistry.cas.org/detail?cas_rn=75-37-6"
        ],
        "prov:wasDerivedFrom": "common chemistry CAS lookup"
      }
    },
    {
      "@value": "Formacel Z 2",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "consensus_match",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CAS:75-37-6",
          "https://commonchemistry.cas.org/detail?cas_rn=75-37-6"
        ],
        "prov:wasDerivedFrom": "common chemistry CAS lookup"
      }
    },
    {
      "@value": "Freon R 152a",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "consensus_match",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CAS:75-37-6",
          "https://commonchemistry.cas.org/detail?cas_rn=75-37-6"
        ],
        "prov:wasDerivedFrom": "common chemistry CAS lookup"
      }
    },
    {
      "@value": "Genetron 152A",
      "@language": "en",
      "source": {
        "prov:wasGeneratedBy": "consensus_match",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "CAS:75-37-6",
          "https://commonchemistry.cas.org/detail?cas_rn=75-37-6"
        ],
        "prov:wasDerivedFrom": "common chemistry CAS lookup"
      }
    }
  ],
  "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-69dd3b89d69d6be5",
  "concept_associations": [
    {
      "@type": "xkos:ConceptAssociation",
      "xkos:sourceConcept": {
        "@id": "https://vocab.brightway.one/ef/3.1/flow/08a91e70-3ddc-11dd-930b-0050c2490048",
        "skos:prefLabel": "1,1-Difluoroethane",
        "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-930b-0050c2490048"
        }
      },
      "xkos:targetConcept": {
        "@id": "https://vocab.brightway.dev/elementary-flows/08a91e70-3ddc-11dd-930b-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/393d0862-04cc-45ae-8d08-9dc2a4461b35",
        "skos:prefLabel": "1,1-Difluoroethane",
        "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-930b-0050c2490048"
        }
      },
      "xkos:targetConcept": {
        "@id": "https://vocab.brightway.dev/elementary-flows/08a91e70-3ddc-11dd-930b-0050c2490048"
      },
      "provenance": {
        "prov:wasGeneratedBy": "merge_ecoinvent",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "ecoinvent:3.12:393d0862-04cc-45ae-8d08-9dc2a4461b35",
          "1,1-Difluoroethane",
          "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/393d0862-04cc-45ae-8d08-9dc2a4461b35",
        "skos:prefLabel": "Ethane, 1,1-difluoro-, HFC-152a",
        "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-930b-0050c2490048"
        }
      },
      "xkos:targetConcept": {
        "@id": "https://vocab.brightway.dev/elementary-flows/08a91e70-3ddc-11dd-930b-0050c2490048"
      },
      "provenance": {
        "prov:wasGeneratedBy": "merge_ecoinvent",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "ecoinvent:3.8:393d0862-04cc-45ae-8d08-9dc2a4461b35",
          "Ethane, 1,1-difluoro-, HFC-152a",
          "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/37f24ad3-effe-56ab-bd0b-812f2f586c0b",
        "skos:prefLabel": "Ethane, 1,1-difluoro-, HFC-152a",
        "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-930b-0050c2490048"
        }
      },
      "xkos:targetConcept": {
        "@id": "https://vocab.brightway.dev/elementary-flows/08a91e70-3ddc-11dd-930b-0050c2490048"
      },
      "provenance": {
        "prov:wasGeneratedBy": "merge_bafu",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "bafu:2026-v1:37f24ad3-effe-56ab-bd0b-812f2f586c0b",
          "Ethane, 1,1-difluoro-, HFC-152a",
          "",
          "algorithm.lookup_order=cas>ec>label",
          "algorithm.basis=cas:75-37-6",
          "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:75-37-6);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"
      }
    }
  ],
  "_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": {
    "75-37-6": "exactMatch"
  },
  "_transformed": true,
  "_provided": {
    "name": "1,1-Difluoroethane",
    "synonyms": [
      "1, 1-Difluoroethane",
      "1,1-DIFLUOROETHANE",
      "AC1L1MDF",
      "AC1Q2B45",
      "Algofrene type 67",
      "Difluoroethane",
      "Dymel 152",
      "Dymel 152A",
      "Ethane, 1,1-difluoro-",
      "Ethylene fluoride",
      "Ethylidene difluoride",
      "Ethylidene fluoride",
      "FC 152a",
      "Fluorocarbon 152a",
      "Freon 152a",
      "Genetron 100",
      "Genetron 152a",
      "HFC 152a",
      "Halocarbon 152A",
      "Hydrofluorocarbon 152a",
      "I14-14875",
      "PC2800",
      "Propellant 152a",
      "R 152a",
      "Refrigerant 152a"
    ],
    "context": [
      "Emissions",
      "Emissions to air",
      "Emissions to urban air close to ground"
    ],
    "cas_numbers": [
      "75-37-6"
    ],
    "ec_numbers": [
      "200-866-1"
    ],
    "unit": "kg"
  }
}

1,1-Difluoroethane

Identity

Context

Alternative labels

Source lists

Concept associations

Characterisation factors

History

Full record

Keyboard