Methyl Trifluoromethyl Ether
Everything that changed this flow. Back to the flow
5a24f510-a2be-4ff7-b0f2-d90884572b90
By field
14 fields| Field | Changes | Written by | Latest note |
|---|---|---|---|
| properties | 6 | enrich_references, link_flows_to_their_substance, normalise_property_values, opsin_iupac, rdkit_post_consensus, rdkit_pre_consensus | the substance's answer, copied onto its flow |
| prefLabel | 2 | bootstrap_labels, normalize_name_case | Title-cased words without internal capitals (preserved words with uppercase letters beyond the first character) |
| cas_match_labels | 1 | consensus_match | group_key=methyltrifluoromethylether||dimension=Environmental > media=Ground > geography=Non-agricultural; group_sources=['pubchem']; cas_sources={'421-14-7': ['pubchem']}; assigned CAS labels from group consensus; object_uuid=fo-48ed32f86342331a: {'421-14-7': 'exactMatch'} |
| context | 1 | default_context_mapping | Mapped from context mapping for source=EF 3.1, source context Emissions > Emissions to air > Emissions to air, unspecified |
| context_iri | 1 | default_context_mapping | Mapped from context mapping for source=EF 3.1, source context Emissions > Emissions to air > Emissions to air, unspecified |
| dcterms_is_replaced_by | 1 | pipeline.collision_decisions | merged onto 9308ce4c-e251-11e6-bf01-fe55135034f3 by curator ruling: Unspecified air, kilograms. EF 3.1 publishes trifluoromethoxymethane twice here, both rows in kilograms and both carrying 421-14-7: as `Methyl trifluoromethyl ether`, with ten synonyms -- `Trifluoromethoxymethane`, `CF3OCH3`, `Methane, trifluoromethoxy-`, `Methyl perfluoromethyl ether` -- EF's ILCD note, and no characterisation; and as `HFE-143a`, the refrigerant designation, with no synonyms and Climate change 616.0. Whether that is one substance is answered by the number both rows carry: PubChem's CID 73947 is 421-14-7, trifluoromethoxymethane, and its synonyms include `Methyl trifluoromethyl ether` and `Trifluoromethyl methyl ether`. One substance under a chemical name and an industry code, which is the case this file was made for. `HFE-143a` survives for the ordinary reason: it is the row that holds the factor, and the merge gives it to a row that had none. Retiring the named row loses nothing it carries, because the synonyms and the ILCD note are on the flow object the two share and the substance goes on being published as `Methyl Trifluoromethyl Ether`. The named row's seven soil and water rows are uncontested and stay; so does `HFE-143a`'s own row in the lower stratosphere, which the named row does not reach. Until this ruling the collision stood, and a standing collision is what a source row cannot be placed onto: Stepwise 2006's `Ether, 1,1,1-trifluoromethyl methyl-, HFE-143a` was tied between the two rows (`tied-elementary-candidates`) and published nowhere, on the four-list build of 29 August 2026 one of only two unplaced rows in 22,005. (#837) |
| is_replaced_by_uuid | 1 | pipeline.collision_decisions | merged onto 9308ce4c-e251-11e6-bf01-fe55135034f3 by curator ruling: Unspecified air, kilograms. EF 3.1 publishes trifluoromethoxymethane twice here, both rows in kilograms and both carrying 421-14-7: as `Methyl trifluoromethyl ether`, with ten synonyms -- `Trifluoromethoxymethane`, `CF3OCH3`, `Methane, trifluoromethoxy-`, `Methyl perfluoromethyl ether` -- EF's ILCD note, and no characterisation; and as `HFE-143a`, the refrigerant designation, with no synonyms and Climate change 616.0. Whether that is one substance is answered by the number both rows carry: PubChem's CID 73947 is 421-14-7, trifluoromethoxymethane, and its synonyms include `Methyl trifluoromethyl ether` and `Trifluoromethyl methyl ether`. One substance under a chemical name and an industry code, which is the case this file was made for. `HFE-143a` survives for the ordinary reason: it is the row that holds the factor, and the merge gives it to a row that had none. Retiring the named row loses nothing it carries, because the synonyms and the ILCD note are on the flow object the two share and the substance goes on being published as `Methyl Trifluoromethyl Ether`. The named row's seven soil and water rows are uncontested and stay; so does `HFE-143a`'s own row in the lower stratosphere, which the named row does not reach. Until this ruling the collision stood, and a standing collision is what a source row cannot be placed onto: Stepwise 2006's `Ether, 1,1,1-trifluoromethyl methyl-, HFE-143a` was tied between the two rows (`tied-elementary-candidates`) and published nowhere, on the four-list build of 29 August 2026 one of only two unplaced rows in 22,005. (#837) |
| name | 1 | bootstrap_labels | Purged legacy name field to enforce prefLabel usage |
| owl_deprecated | 1 | pipeline.collision_decisions | merged onto 9308ce4c-e251-11e6-bf01-fe55135034f3 by curator ruling: Unspecified air, kilograms. EF 3.1 publishes trifluoromethoxymethane twice here, both rows in kilograms and both carrying 421-14-7: as `Methyl trifluoromethyl ether`, with ten synonyms -- `Trifluoromethoxymethane`, `CF3OCH3`, `Methane, trifluoromethoxy-`, `Methyl perfluoromethyl ether` -- EF's ILCD note, and no characterisation; and as `HFE-143a`, the refrigerant designation, with no synonyms and Climate change 616.0. Whether that is one substance is answered by the number both rows carry: PubChem's CID 73947 is 421-14-7, trifluoromethoxymethane, and its synonyms include `Methyl trifluoromethyl ether` and `Trifluoromethyl methyl ether`. One substance under a chemical name and an industry code, which is the case this file was made for. `HFE-143a` survives for the ordinary reason: it is the row that holds the factor, and the merge gives it to a row that had none. Retiring the named row loses nothing it carries, because the synonyms and the ILCD note are on the flow object the two share and the substance goes on being published as `Methyl Trifluoromethyl Ether`. The named row's seven soil and water rows are uncontested and stay; so does `HFE-143a`'s own row in the lower stratosphere, which the named row does not reach. Until this ruling the collision stood, and a standing collision is what a source row cannot be placed onto: Stepwise 2006's `Ether, 1,1,1-trifluoromethyl methyl-, HFE-143a` was tied between the two rows (`tied-elementary-candidates`) and published nowhere, on the four-list build of 29 August 2026 one of only two unplaced rows in 22,005. (#837) |
| references | 1 | enrich_references | Added references with provenance; cas_numbers=['421-14-7']; matched_chebi_ids=[]; candidate_pubchem_cids=[73947, 161936]; selected_pubchem_cids=[73947]; formula_similarity_expected=[]; pubchem_selection_rule=curated_cas_then_formula_similarity_then_prefer_chebi_aligned_when_unambiguous_else_keep_all_cas_matches; single_cas_commonchem_link=yes |
| skos_definition | 1 | enrich_references | Merged ChEBI/PubChem definitions into skos:definition |
| synonyms | 1 | bootstrap_labels | Removed legacy synonyms field in favor of structured labels |
| types | 1 | link_flows_to_their_substance | the substance's answer, copied onto its flow |
| unit_iri | 1 | unit_normalization | Unit IRI set from normalization of 'kg' |
Where several steps wrote one field, the last one won — and the log below shows the sequence.
Changes
20| # | Step | Field | From | To | Why |
|---|---|---|---|---|---|
| 3,729 | bootstrap_labels | prefLabel | — | [{"@value":"Methyl trifluoromethyl ether","@language":"en","source":{"prov:wasGeneratedBy":"bootstrap_labels","prov:was… | Bootstrapped prefLabel from legacy name field |
| 3,730 | bootstrap_labels | name | Methyl trifluoromethyl ether | — | Purged legacy name field to enforce prefLabel usage |
| 23,179 | bootstrap_labels | synonyms | ["AC1L2KV1","AC1Q4KDD","CF3OCH3","Ether, methyl trifluoromethyl","HFE-143a","Methane, trifluoromethoxy-","Methyl perflu… | [] | Removed legacy synonyms field in favor of structured labels |
| 103,365 | default_context_mapping | context | — | {"dimension":"Environmental","media":"Air","strata":"Unknown"} | Mapped from context mapping for source=EF 3.1, source context Emissions > Emissions to air > Emissions to air, unspecified |
| 103,366 | default_context_mapping | context_iri | — | https://vocab.brightway.one/flow-contexts/envi-air-unkn | Mapped from context mapping for source=EF 3.1, source context Emissions > Emissions to air > Emissions to air, unspecified |
| 214,590 | unit_normalization | unit_iri | — | https://vocab.brightway.one/units/unit/KiloGM | Unit IRI set from normalization of 'kg' |
| 221,957 | normalize_name_case | prefLabel | [{"@value":"Methyl trifluoromethyl ether","@language":"en","source":{"prov:wasGeneratedBy":"bootstrap_labels","prov:was… | [{"@value":"Methyl Trifluoromethyl Ether","@language":"en","source":{"prov:wasGeneratedBy":"bootstrap_labels","prov:was… | Title-cased words without internal capitals (preserved words with uppercase letters beyond the first character) |
| 230,781 | enrich_references | properties | {} | {"https://w3id.org/chemrof/molecular_formula":{"@id":"https://w3id.org/chemrof/molecular_formula","@value":["C2H3F3O"],… | Added ChEBI/PubChem properties (chebi_ids=0, pubchem_cids=1) |
| 230,782 | enrich_references | skos_definition | — | [] | Merged ChEBI/PubChem definitions into skos:definition |
| 230,783 | enrich_references | references | [] | [{"@id":"http://jglobal.jst.go.jp/en/redirect?Nikkaji_No=J665.420G","provenance":{"prov:wasGeneratedBy":"enrich_referen… | Added references with provenance; cas_numbers=['421-14-7']; matched_chebi_ids=[]; candidate_pubchem_cids=[73947, 161936]; selected_pubchem_cids=[73947]; formula_similarity_expected=[]; pubchem_selection_rule=curated_cas_then_formula_similarity_then_prefer_chebi_aligned_when_unambiguous_else_keep_all_cas_matches; single_cas_commonchem_link=yes |
| 249,363 | rdkit_pre_consensus | properties | {"https://w3id.org/chemrof/molecular_formula":{"@id":"https://w3id.org/chemrof/molecular_formula","@value":["C2H3F3O"],… | {"https://w3id.org/chemrof/molecular_formula":{"@id":"https://w3id.org/chemrof/molecular_formula","@value":["C2H3F3O"],… | rdkit_pre_consensus from 'COC(F)(F)F'; added: molecular_mass, monoisotopic_mass |
| 268,927 | consensus_match | cas_match_labels | — | {"421-14-7":"exactMatch"} | group_key=methyltrifluoromethylether||dimension=Environmental > media=Ground > geography=Non-agricultural; group_sources=['pubchem']; cas_sources={'421-14-7': ['pubchem']}; assigned CAS labels from group consensus; object_uuid=fo-48ed32f86342331a: {'421-14-7': 'exactMatch'} |
| 274,495 | opsin_iupac | properties | {"https://w3id.org/chemrof/molecular_formula":{"@id":"https://w3id.org/chemrof/molecular_formula","@value":["C2H3F3O"],… | {"https://w3id.org/chemrof/molecular_formula":{"@id":"https://w3id.org/chemrof/molecular_formula","@value":["C2H3F3O"],… | opsin_iupac: set authoritative IUPAC name, SMILES, InChI from 'Methyl Trifluoromethyl Ether' |
| 280,935 | rdkit_post_consensus | properties | {"https://w3id.org/chemrof/molecular_formula":{"@id":"https://w3id.org/chemrof/molecular_formula","@value":["C2H3F3O"],… | {"https://w3id.org/chemrof/molecular_formula":{"@id":"https://w3id.org/chemrof/molecular_formula","@value":["C2H3F3O"],… | rdkit_post_consensus from 'COC(F)(F)F'; confirmed: smiles_string, inchi2d_string, inchi2d_key_string, molecular_formula, molecular_mass, monoisotopic_mass |
| 293,367 | pipeline.collision_decisions | owl_deprecated | — | yes | merged onto 9308ce4c-e251-11e6-bf01-fe55135034f3 by curator ruling: Unspecified air, kilograms. EF 3.1 publishes trifluoromethoxymethane twice here, both rows in kilograms and both carrying 421-14-7: as `Methyl trifluoromethyl ether`, with ten synonyms -- `Trifluoromethoxymethane`, `CF3OCH3`, `Methane, trifluoromethoxy-`, `Methyl perfluoromethyl ether` -- EF's ILCD note, and no characterisation; and as `HFE-143a`, the refrigerant designation, with no synonyms and Climate change 616.0. Whether that is one substance is answered by the number both rows carry: PubChem's CID 73947 is 421-14-7, trifluoromethoxymethane, and its synonyms include `Methyl trifluoromethyl ether` and `Trifluoromethyl methyl ether`. One substance under a chemical name and an industry code, which is the case this file was made for. `HFE-143a` survives for the ordinary reason: it is the row that holds the factor, and the merge gives it to a row that had none. Retiring the named row loses nothing it carries, because the synonyms and the ILCD note are on the flow object the two share and the substance goes on being published as `Methyl Trifluoromethyl Ether`. The named row's seven soil and water rows are uncontested and stay; so does `HFE-143a`'s own row in the lower stratosphere, which the named row does not reach. Until this ruling the collision stood, and a standing collision is what a source row cannot be placed onto: Stepwise 2006's `Ether, 1,1,1-trifluoromethyl methyl-, HFE-143a` was tied between the two rows (`tied-elementary-candidates`) and published nowhere, on the four-list build of 29 August 2026 one of only two unplaced rows in 22,005. (#837) |
| 293,368 | pipeline.collision_decisions | dcterms_is_replaced_by | — | urn:uuid:9308ce4c-e251-11e6-bf01-fe55135034f3 | merged onto 9308ce4c-e251-11e6-bf01-fe55135034f3 by curator ruling: Unspecified air, kilograms. EF 3.1 publishes trifluoromethoxymethane twice here, both rows in kilograms and both carrying 421-14-7: as `Methyl trifluoromethyl ether`, with ten synonyms -- `Trifluoromethoxymethane`, `CF3OCH3`, `Methane, trifluoromethoxy-`, `Methyl perfluoromethyl ether` -- EF's ILCD note, and no characterisation; and as `HFE-143a`, the refrigerant designation, with no synonyms and Climate change 616.0. Whether that is one substance is answered by the number both rows carry: PubChem's CID 73947 is 421-14-7, trifluoromethoxymethane, and its synonyms include `Methyl trifluoromethyl ether` and `Trifluoromethyl methyl ether`. One substance under a chemical name and an industry code, which is the case this file was made for. `HFE-143a` survives for the ordinary reason: it is the row that holds the factor, and the merge gives it to a row that had none. Retiring the named row loses nothing it carries, because the synonyms and the ILCD note are on the flow object the two share and the substance goes on being published as `Methyl Trifluoromethyl Ether`. The named row's seven soil and water rows are uncontested and stay; so does `HFE-143a`'s own row in the lower stratosphere, which the named row does not reach. Until this ruling the collision stood, and a standing collision is what a source row cannot be placed onto: Stepwise 2006's `Ether, 1,1,1-trifluoromethyl methyl-, HFE-143a` was tied between the two rows (`tied-elementary-candidates`) and published nowhere, on the four-list build of 29 August 2026 one of only two unplaced rows in 22,005. (#837) |
| 293,369 | pipeline.collision_decisions | is_replaced_by_uuid | — | 9308ce4c-e251-11e6-bf01-fe55135034f3 | merged onto 9308ce4c-e251-11e6-bf01-fe55135034f3 by curator ruling: Unspecified air, kilograms. EF 3.1 publishes trifluoromethoxymethane twice here, both rows in kilograms and both carrying 421-14-7: as `Methyl trifluoromethyl ether`, with ten synonyms -- `Trifluoromethoxymethane`, `CF3OCH3`, `Methane, trifluoromethoxy-`, `Methyl perfluoromethyl ether` -- EF's ILCD note, and no characterisation; and as `HFE-143a`, the refrigerant designation, with no synonyms and Climate change 616.0. Whether that is one substance is answered by the number both rows carry: PubChem's CID 73947 is 421-14-7, trifluoromethoxymethane, and its synonyms include `Methyl trifluoromethyl ether` and `Trifluoromethyl methyl ether`. One substance under a chemical name and an industry code, which is the case this file was made for. `HFE-143a` survives for the ordinary reason: it is the row that holds the factor, and the merge gives it to a row that had none. Retiring the named row loses nothing it carries, because the synonyms and the ILCD note are on the flow object the two share and the substance goes on being published as `Methyl Trifluoromethyl Ether`. The named row's seven soil and water rows are uncontested and stay; so does `HFE-143a`'s own row in the lower stratosphere, which the named row does not reach. Until this ruling the collision stood, and a standing collision is what a source row cannot be placed onto: Stepwise 2006's `Ether, 1,1,1-trifluoromethyl methyl-, HFE-143a` was tied between the two rows (`tied-elementary-candidates`) and published nowhere, on the four-list build of 29 August 2026 one of only two unplaced rows in 22,005. (#837) |
| 388,817 | normalise_property_values | properties | {"https://w3id.org/chemrof/molecular_formula":{"@id":"https://w3id.org/chemrof/molecular_formula","@value":["C2H3F3O"],… | {"https://w3id.org/chemrof/molecular_formula":{"@id":"https://w3id.org/chemrof/molecular_formula","@value":["C2H3F3O"],… | typed the way the ontology types it |
| 395,693 | link_flows_to_their_substance | types | — | ["https://w3id.org/chemrof/NeutralMolecule"] | the substance's answer, copied onto its flow |
| 395,694 | link_flows_to_their_substance | properties | {"https://w3id.org/chemrof/molecular_formula":{"@id":"https://w3id.org/chemrof/molecular_formula","@value":["C2H3F3O"],… | {"https://w3id.org/chemrof/molecular_formula":{"@id":"https://w3id.org/chemrof/molecular_formula","@value":["C2H3F3O"],… | the substance's answer, copied onto its flow |
PROV-O trail
20 activitiesOne activity per change: which version of the flow it consumed, and which it produced. The values are on the change with the same number — stored once, not twice.
| Activity | Field | Agent | Used | Generated |
|---|---|---|---|---|
| ef:activity/change/20260920T1042228874600000/3729 | prefLabel | ef:agent/bootstrap_labels | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v0 | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v1 |
| ef:activity/change/20260920T1042228874600000/3730 | name | ef:agent/bootstrap_labels | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v1 | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v2 |
| ef:activity/change/20260920T1042228874600000/23179 | synonyms | ef:agent/bootstrap_labels | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v2 | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v3 |
| ef:activity/change/20260920T1042228874600000/103365 | context | ef:agent/default_context_mapping | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v3 | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v4 |
| ef:activity/change/20260920T1042228874600000/103366 | context_iri | ef:agent/default_context_mapping | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v4 | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v5 |
| ef:activity/change/20260920T1042228874600000/214590 | unit_iri | ef:agent/unit_normalization | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v5 | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v6 |
| ef:activity/change/20260920T1042228874600000/221957 | prefLabel | ef:agent/normalize_name_case | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v6 | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v7 |
| ef:activity/change/20260920T1042228874600000/230781 | properties | ef:agent/enrich_references | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v7 | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v8 |
| ef:activity/change/20260920T1042228874600000/230782 | skos_definition | ef:agent/enrich_references | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v8 | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v9 |
| ef:activity/change/20260920T1042228874600000/230783 | references | ef:agent/enrich_references | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v9 | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v10 |
| ef:activity/change/20260920T1042228874600000/249363 | properties | ef:agent/rdkit_pre_consensus | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v10 | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v11 |
| ef:activity/change/20260920T1042228874600000/268927 | cas_match_labels | ef:agent/consensus_match | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v11 | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v12 |
| ef:activity/change/20260920T1042228874600000/274495 | properties | ef:agent/opsin_iupac | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v12 | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v13 |
| ef:activity/change/20260920T1042228874600000/280935 | properties | ef:agent/rdkit_post_consensus | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v13 | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v14 |
| ef:activity/change/20260920T1042228874600000/293367 | owl_deprecated | ef:agent/pipeline.collision_decisions | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v14 | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v15 |
| ef:activity/change/20260920T1042228874600000/293368 | dcterms_is_replaced_by | ef:agent/pipeline.collision_decisions | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v15 | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v16 |
| ef:activity/change/20260920T1042228874600000/293369 | is_replaced_by_uuid | ef:agent/pipeline.collision_decisions | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v16 | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v17 |
| ef:activity/change/20260920T1042228874600000/388817 | properties | ef:agent/normalise_property_values | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v17 | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v18 |
| ef:activity/change/20260920T1042228874600000/395693 | types | ef:agent/link_flows_to_their_substance | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v18 | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v19 |
| ef:activity/change/20260920T1042228874600000/395694 | properties | ef:agent/link_flows_to_their_substance | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v19 | ef:flow/5a24f510-a2be-4ff7-b0f2-d90884572b90/v20 |