1,1-Difluoroethane
08a91e70-3ddc-11dd-930c-0050c2490048
Identity
- Substance
- fo-69dd3b89d69d6be5 Neutral molecule
- Source
- EF 3.1
- Unit
- kg
- Context
- Environmental → Air → Medium stack, <150 meters → Rural (<1000 people/square mile)
- CAS
- 75-37-6
- EC
- 200-866-1
Context
- Dimension
- Environmental
- Media
- Air
- Population density
- Rural (<1000 people/square mile)
- Strata
- Medium stack, <150 meters
Alternative labels
8- HFC-152a
- 152a
- Algofrene 67
- Ethane, 1,1-difluoro-
- Ethylidene fluoride
- Formacel Z 2
- Freon R 152a
- Genetron 152A
Source lists
5| List | Version | Source flow | Name there | Why this flow |
|---|---|---|---|---|
| EF | 3.1 | 08a91e70-3ddc-11dd-930c-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. |
| agribalyse | 3.2 | 9bc1a393-d823-5d91-b054-fbd401f50ad0 | Ethane, 1,1-difluoro-, HFC-152a | The CAS numbers are the same (75-37-6); both name the same compartment. |
| bafu | 2026-v1 | 177e3b8c-3ed3-58de-8981-09f41665310b | Ethane, 1,1-difluoro-, HFC-152a | The CAS numbers are the same (75-37-6); both name the same compartment. |
| ecoinvent | 3.12 | 1c4a106a-53bc-40f5-bcae-d30ab191dbfe | 1,1-Difluoroethane | The CAS numbers are the same (75-37-6); both name the same compartment. |
| ecoinvent | 3.8 | 1c4a106a-53bc-40f5-bcae-d30ab191dbfe | Ethane, 1,1-difluoro-, HFC-152a | The CAS numbers are the same (75-37-6); both name the same compartment. |
Concept associations
5| Source list | Source flow | Name there | Compartment there | Match | Conversion |
|---|---|---|---|---|---|
| EF 3.1 | 08a91e70-3ddc-11dd-930c-0050c2490048 | 1,1-Difluoroethane | Emissions/Emissions to air/Emissions to non-urban air or from high stacks | exactMatch | — |
| ecoinvent 3.12 | 1c4a106a-53bc-40f5-bcae-d30ab191dbfe | 1,1-Difluoroethane | air / non-urban air or from high stacks | closeMatch | — |
| ecoinvent 3.8 | 1c4a106a-53bc-40f5-bcae-d30ab191dbfe | Ethane, 1,1-difluoro-, HFC-152a | air / non-urban air or from high stacks | closeMatch | — |
| bafu 2026-v1 | 177e3b8c-3ed3-58de-8981-09f41665310b | Ethane, 1,1-difluoro-, HFC-152a | emissions to air / low. pop. | closeMatch | — |
| agribalyse 3.2 | 9bc1a393-d823-5d91-b054-fbd401f50ad0 | Ethane, 1,1-difluoro-, HFC-152a | Emissions to air / low. pop. | closeMatch | — |
Characterisation factors
28- brightway-flows 10
- European Commission — JRC 6
- GreenDelta 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 | GreenDelta | Climate change | — | 164 | — |
| EF 3.1 | brightway-flows | 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 | GreenDelta | Climate change-Fossil | — | 164 | — |
| EF 3.1 | brightway-flows | Climate change-Fossil | — | 164 | agreed |
| EF 3.1 | European Commission — JRC | Ecotoxicity, freshwater | — | 0.53754 | — |
| EF 3.1 | ecoinvent Centre | Ecotoxicity, freshwater | — | 0.53754 | — |
| EF 3.1 | GreenDelta | Ecotoxicity, freshwater | — | 0.53754 | — |
| EF 3.1 | brightway-flows | Ecotoxicity, freshwater | — | 0.53754 | agreed |
| EF 3.1 | European Commission — JRC | Ecotoxicity, freshwater_organics | — | 0.53754 | — |
| EF 3.1 | ecoinvent Centre | Ecotoxicity, freshwater_organics | — | 0.53754 | — |
| EF 3.1 | GreenDelta | Ecotoxicity, freshwater_organics | — | 0.53754 | — |
| EF 3.1 | brightway-flows | Ecotoxicity, freshwater_organics | — | 0.53754 | agreed |
| EF 3.1 | European Commission — JRC | Human toxicity, non-cancer | — | 1.7919e-10 | — |
| EF 3.1 | ecoinvent Centre | Human toxicity, non-cancer | — | 1.7919e-10 | — |
| EF 3.1 | GreenDelta | Human toxicity, non-cancer | — | 1.7919e-10 | — |
| EF 3.1 | brightway-flows | Human toxicity, non-cancer | — | 1.7919e-10 | agreed |
| EF 3.1 | European Commission — JRC | Human toxicity, non-cancer_organics | — | 1.7919e-10 | — |
| EF 3.1 | ecoinvent Centre | Human toxicity, non-cancer_organics | — | 1.7919e-10 | — |
| EF 3.1 | GreenDelta | Human toxicity, non-cancer_organics | — | 1.7919e-10 | — |
| EF 3.1 | brightway-flows | Human toxicity, non-cancer_organics | — | 1.7919e-10 | agreed |
| Stepwise 2006 | brightway-flows | Ecotoxicity, aquatic | — | 0.020995 | carried |
| Stepwise 2006 | brightway-flows | Ecotoxicity, terrestrial | — | 0.061269 | carried |
| Stepwise 2006 | brightway-flows | Global warming, fossil | — | 164 | carried |
| Stepwise 2006 | brightway-flows | Human toxicity, non-carc. | — | 2.4345e-04 | carried |
History
The change log and the PROV-O trail (2 consensus changes)
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
{
"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": "brightway-flows",
"prov:hadPrimarySource": [
"CID:6368"
],
"prov:wasDerivedFrom": "pubchem.props.Molecular Formula"
},
{
"prov:wasGeneratedBy": "rdkit_post_consensus",
"prov:wasAttributedTo": "brightway-flows",
"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": "brightway-flows",
"prov:hadPrimarySource": [
"CID:6368"
],
"prov:wasDerivedFrom": "pubchem.props.InChIKey"
},
{
"prov:wasGeneratedBy": "rdkit_post_consensus",
"prov:wasAttributedTo": "brightway-flows",
"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": "brightway-flows",
"prov:hadPrimarySource": [
"1,1-Difluoroethane"
]
},
{
"prov:wasGeneratedBy": "rdkit_post_consensus",
"prov:wasAttributedTo": "brightway-flows",
"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": "brightway-flows",
"prov:hadPrimarySource": [
"1,1-Difluoroethane"
]
},
{
"prov:wasGeneratedBy": "rdkit_post_consensus",
"prov:wasAttributedTo": "brightway-flows",
"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": "brightway-flows",
"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": "brightway-flows",
"prov:hadPrimarySource": [
"CC(F)F"
]
},
{
"prov:wasGeneratedBy": "rdkit_post_consensus",
"prov:wasAttributedTo": "brightway-flows",
"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": "brightway-flows",
"prov:hadPrimarySource": [
"CC(F)F"
]
},
{
"prov:wasGeneratedBy": "rdkit_post_consensus",
"prov:wasAttributedTo": "brightway-flows",
"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": "brightway-flows",
"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": "brightway-flows",
"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": "brightway-flows",
"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": "brightway-flows",
"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": "brightway-flows",
"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": "brightway-flows",
"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": "brightway-flows",
"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": "brightway-flows",
"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": "brightway-flows",
"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": "brightway-flows",
"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": "brightway-flows",
"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": "brightway-flows",
"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": "brightway-flows",
"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": "brightway-flows",
"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": "brightway-flows",
"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": "brightway-flows",
"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": "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": "08a91e70-3ddc-11dd-930c-0050c2490048",
"identifier": "08a91e70-3ddc-11dd-930c-0050c2490048",
"source": "EF 3.1",
"cas_numbers": [
"75-37-6"
],
"ec_numbers": [
"200-866-1"
],
"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": 0.53754
},
{
"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": 1.7919e-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": 1.7919e-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": 0.53754
}
],
"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": "brightway-flows",
"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": "brightway-flows",
"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": "brightway-flows",
"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": "brightway-flows",
"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": "brightway-flows",
"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": "brightway-flows",
"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": "brightway-flows",
"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-mest15me-ru10pesq",
"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-930c-0050c2490048",
"skos:prefLabel": "1,1-Difluoroethane",
"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/08a91e70-3ddc-11dd-930c-0050c2490048"
}
},
"xkos:targetConcept": {
"@id": "https://vocab.brightway.dev/elementary-flows/08a91e70-3ddc-11dd-930c-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/1c4a106a-53bc-40f5-bcae-d30ab191dbfe",
"skos:prefLabel": "1,1-Difluoroethane",
"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/08a91e70-3ddc-11dd-930c-0050c2490048"
}
},
"xkos:targetConcept": {
"@id": "https://vocab.brightway.dev/elementary-flows/08a91e70-3ddc-11dd-930c-0050c2490048"
},
"provenance": {
"prov:wasGeneratedBy": "merge_ecoinvent",
"prov:wasAttributedTo": "brightway-flows",
"prov:hadPrimarySource": [
"ecoinvent:3.12:1c4a106a-53bc-40f5-bcae-d30ab191dbfe",
"1,1-Difluoroethane",
"",
"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"
}
},
{
"@type": "xkos:ConceptAssociation",
"xkos:sourceConcept": {
"@id": "https://vocab.brightway.one/ecoinvent/3.8/flow/1c4a106a-53bc-40f5-bcae-d30ab191dbfe",
"skos:prefLabel": "Ethane, 1,1-difluoro-, HFC-152a",
"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/08a91e70-3ddc-11dd-930c-0050c2490048"
}
},
"xkos:targetConcept": {
"@id": "https://vocab.brightway.dev/elementary-flows/08a91e70-3ddc-11dd-930c-0050c2490048"
},
"provenance": {
"prov:wasGeneratedBy": "merge_ecoinvent",
"prov:wasAttributedTo": "brightway-flows",
"prov:hadPrimarySource": [
"ecoinvent:3.8:1c4a106a-53bc-40f5-bcae-d30ab191dbfe",
"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"
}
},
{
"@type": "xkos:ConceptAssociation",
"xkos:sourceConcept": {
"@id": "https://vocab.brightway.one/bafu/2026-v1/flow/177e3b8c-3ed3-58de-8981-09f41665310b",
"skos:prefLabel": "Ethane, 1,1-difluoro-, HFC-152a",
"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/08a91e70-3ddc-11dd-930c-0050c2490048"
}
},
"xkos:targetConcept": {
"@id": "https://vocab.brightway.dev/elementary-flows/08a91e70-3ddc-11dd-930c-0050c2490048"
},
"provenance": {
"prov:wasGeneratedBy": "merge_bafu",
"prov:wasAttributedTo": "brightway-flows",
"prov:hadPrimarySource": [
"bafu:2026-v1:177e3b8c-3ed3-58de-8981-09f41665310b",
"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"
}
},
{
"@type": "xkos:ConceptAssociation",
"xkos:sourceConcept": {
"@id": "https://vocab.brightway.one/agribalyse/3.2/flow/9bc1a393-d823-5d91-b054-fbd401f50ad0",
"skos:prefLabel": "Ethane, 1,1-difluoro-, HFC-152a",
"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/08a91e70-3ddc-11dd-930c-0050c2490048"
}
},
"xkos:targetConcept": {
"@id": "https://vocab.brightway.dev/elementary-flows/08a91e70-3ddc-11dd-930c-0050c2490048"
},
"provenance": {
"prov:wasGeneratedBy": "merge_agribalyse",
"prov:wasAttributedTo": "brightway-flows",
"prov:hadPrimarySource": [
"agribalyse:3.2:9bc1a393-d823-5d91-b054-fbd401f50ad0",
"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=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:75-37-6);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": {
"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 non-urban air or from high stacks"
],
"cas_numbers": [
"75-37-6"
],
"ec_numbers": [
"200-866-1"
],
"unit": "kg"
}
}Something wrong here?
A flow can be wrong in three ways, and they are decided differently. Pick the one that matches what you are looking at.
- A row from my list should not reach this flow
- This flow is not that chemical
- The compartment or the unit is wrong
- One of these characterisation factors cannot be this substance's
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