Consensus flow list

Sulfur Trioxide

4d9a8790-3ddd-11dd-96ec-0050c2490048

Identity

Substance
fo-f4aa091c8e9054ec Neutral molecule
Source
EF 3.1
Unit
kg
Context
Environmental → Air → Unknown
CAS
7446-11-9
EC
231-197-3

Context

Dimension
Environmental
Media
Air
Strata
Unknown

Alternative labels

6

Source lists

4
List Version Source flow Name there Why this flow
EF 3.1 4d9a8790-3ddd-11dd-96ec-0050c2490048 sulfur trioxide The consensus list is built from this one, so this row is the flow itself rather than something matched to it.
bafu 2026-v1 6155fe1f-1810-5bf4-bb2b-909e0eebd21e Sulfur Trioxide The CAS numbers are the same (7446-11-9); both name the same compartment.
ecoinvent 3.12 3268d8df-59cc-4740-a89f-dee8355ad7c3 Sulfur Trioxide A curator's mapping table (ecoinvent-3.11-biosphere-EF-3.1-biosphere) names this flow.
ecoinvent 3.8 3268d8df-59cc-4740-a89f-dee8355ad7c3 Sulfur Trioxide A curator's mapping table (ecoinvent-3.8-biosphere-EF-3.1-biosphere.json) names this flow.

Concept associations

4
Source list Source flow Name there Compartment there Match Conversion
EF 3.1 4d9a8790-3ddd-11dd-96ec-0050c2490048 sulfur trioxide Emissions/Emissions to air/Emissions to air, unspecified exactMatch —
ecoinvent 3.12 3268d8df-59cc-4740-a89f-dee8355ad7c3 Sulfur Trioxide air / unspecified exactMatch —
ecoinvent 3.8 3268d8df-59cc-4740-a89f-dee8355ad7c3 Sulfur Trioxide air / unspecified exactMatch —
bafu 2026-v1 6155fe1f-1810-5bf4-bb2b-909e0eebd21e Sulfur Trioxide emissions to air / unspecified closeMatch —

Characterisation factors

15

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 Acidification — 1.04821 —
EF 3.1 ecoinvent Centre Acidification — 1.04821 —
EF 3.1 consensus-flow-list Acidification — 1.04821 agreed
EF 3.1 European Commission — JRC EF-particulate Matter — 8.0000e-06 —
EF 3.1 ecoinvent Centre EF-particulate Matter — 8.0000e-06 —
EF 3.1 consensus-flow-list EF-particulate Matter — 8.0000e-06 agreed
EF 3.1 European Commission — JRC Ecotoxicity, freshwater — 261.76 —
EF 3.1 ecoinvent Centre Ecotoxicity, freshwater — 261.76 —
EF 3.1 consensus-flow-list Ecotoxicity, freshwater — 261.76 agreed
EF 3.1 European Commission — JRC Ecotoxicity, freshwater_inorganics — 261.76 —
EF 3.1 ecoinvent Centre Ecotoxicity, freshwater_inorganics — 261.76 —
EF 3.1 consensus-flow-list Ecotoxicity, freshwater_inorganics — 261.76 agreed
EF 3.1 European Commission — JRC Photochemical ozone formation - human health — 0.0811 —
EF 3.1 ecoinvent Centre Photochemical ozone formation - human health — 0.0811 —
EF 3.1 consensus-flow-list Photochemical ozone formation - human health — 0.0811 agreed

This flow in the difference report

History

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

Open the changes page

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

Full record

Flow JSON 
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        "skos:prefLabel": "sulfur trioxide",
        "context": "Emissions/Emissions to air/Emissions to air, unspecified",
        "qudt:hasUnit": {
          "@id": "https://vocab.brightway.one/units/unit/KiloGM"
        },
        "skos:exactMatch": {
          "@id": "https://vocab.brightway.dev/elementary-flows/4d9a8790-3ddd-11dd-96ec-0050c2490048"
        }
      },
      "xkos:targetConcept": {
        "@id": "https://vocab.brightway.dev/elementary-flows/4d9a8790-3ddd-11dd-96ec-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/3268d8df-59cc-4740-a89f-dee8355ad7c3",
        "skos:prefLabel": "Sulfur Trioxide",
        "context": "air / unspecified",
        "qudt:hasUnit": {
          "@id": "https://vocab.brightway.one/units/unit/KiloGM"
        },
        "skos:exactMatch": {
          "@id": "https://vocab.brightway.dev/elementary-flows/4d9a8790-3ddd-11dd-96ec-0050c2490048"
        }
      },
      "xkos:targetConcept": {
        "@id": "https://vocab.brightway.dev/elementary-flows/4d9a8790-3ddd-11dd-96ec-0050c2490048"
      },
      "provenance": {
        "prov:wasGeneratedBy": "merge_ecoinvent",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
          "ecoinvent:3.12:3268d8df-59cc-4740-a89f-dee8355ad7c3",
          "Sulfur Trioxide",
          "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/3268d8df-59cc-4740-a89f-dee8355ad7c3",
        "skos:prefLabel": "Sulfur Trioxide",
        "context": "air / unspecified",
        "qudt:hasUnit": {
          "@id": "https://vocab.brightway.one/units/unit/KiloGM"
        },
        "skos:exactMatch": {
          "@id": "https://vocab.brightway.dev/elementary-flows/4d9a8790-3ddd-11dd-96ec-0050c2490048"
        }
      },
      "xkos:targetConcept": {
        "@id": "https://vocab.brightway.dev/elementary-flows/4d9a8790-3ddd-11dd-96ec-0050c2490048"
      },
      "provenance": {
        "prov:wasGeneratedBy": "merge_ecoinvent",
        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
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          "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/6155fe1f-1810-5bf4-bb2b-909e0eebd21e",
        "skos:prefLabel": "Sulfur Trioxide",
        "context": "emissions to air / unspecified",
        "qudt:hasUnit": {
          "@id": "https://vocab.brightway.one/units/unit/KiloGM"
        },
        "skos:closeMatch": {
          "@id": "https://vocab.brightway.dev/elementary-flows/4d9a8790-3ddd-11dd-96ec-0050c2490048"
        }
      },
      "xkos:targetConcept": {
        "@id": "https://vocab.brightway.dev/elementary-flows/4d9a8790-3ddd-11dd-96ec-0050c2490048"
      },
      "provenance": {
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        "prov:hadPrimarySource": [
          "bafu:2026-v1:6155fe1f-1810-5bf4-bb2b-909e0eebd21e",
          "Sulfur Trioxide",
          "",
          "algorithm.lookup_order=cas>ec>label",
          "algorithm.basis=cas:7446-11-9",
          "algorithm.flow_object_candidates=1",
          "algorithm.elementary_candidates=19",
          "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:7446-11-9);flow_object_candidates(1);elementary_candidates(19);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": "normalize_name_case",
    "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": "dedupe_altlabels",
    "cas_match_labels": "consensus_match",
    "concept_associations": "carry_associations_onto_flows",
    "types": "link_flows_to_their_substance"
  },
  "cas_match_labels": {
    "7446-11-9": "exactMatch"
  },
  "_transformed": true,
  "_provided": {
    "name": "sulfur trioxide",
    "synonyms": [
      "AC1L2NLP",
      "AC1Q6YFD",
      "Sulfite radical anion",
      "Sulphur trioxide",
      "[SO3]",
      "oxosulfane dioxide",
      "sulfonylideneoxidane"
    ],
    "context": [
      "Emissions",
      "Emissions to air",
      "Emissions to air, unspecified"
    ],
    "cas_numbers": [
      "7446-11-9"
    ],
    "ec_numbers": [
      "231-197-3"
    ],
    "unit": "kg"
  }
}

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