CrKSO42 x 12 H2O

cas:7788-99-0 chemically defined MAPPED CHEBI CLOSE_MATCH

Ontology mapping

Primary identifier
cas:7788-99-0
Ontology term
CHEBI:53471 — chromium(III) sulfate
Ontology label
chromium(III) sulfate
Notes
Imported from mim-queue (source_id=mediadive.ingredient:1977); no CAS-RN or CHEBI/NCIT match. Curator review needed. Reviewed on 2026-05-11 as a chromium potassium sulfate hydrate shorthand; left unmapped pending exact formula/CAS evidence.

Synonyms (1)

SynonymTypeSourceOccurrences
CrKSO42 x 12 H2O RAW_TEXT mim-queue

Chemical properties

Cas rn
7788-99-0
Data source
Edison LITERATURE deep research

Evidence (2)

DATABASE_MATCH via Edison LITERATURE (PaperQA3) + local CHEBI verification

Chrome alum, KCr(SO4)2*12H2O. The report equates the label with chrome alum from peer-reviewed literature and gives CAS RN 7788-99-0 from a chemical reference. No ontology term covers the potassium double salt or its dodecahydrate; CHEBI:53471 chromium(III) sulfate is the nearest parent, lacking both the potassium and the twelve waters.

DATABASE_MATCH via MIM curation (#342)

mapping_quality NARROW_MATCH -> CLOSE_MATCH, predicate skos:narrowMatch -> skos:closeMatch. narrowMatch asserts this record is *narrower in meaning* than CHEBI:53471 ('chromium(III) sulfate') — a subsumption ChEBI itself denies: it files hydrates under CHEBI:35505 'hydrate', never under the anhydrous compound, which is not an ancestor even transitively. A hydrate is a distinct substance containing the anhydrous form, not a specialization of it. closeMatch claims similarity without subsumption. The ontology_id and the record's own identifier are unchanged.

Occurrence statistics

Total occurrences
0
Distinct media
0

Curation history

TimestampCuratorActionNew statusChanges
2026-04-30T18:43:03.698454+00:00 audit_import_ingredients[mim-queue] CREATED_AS_UNMAPPED UNMAPPED Imported from mim-queue (source_id=mediadive.ingredient:1977); no CAS-RN or CHEBI/NCIT match. Curator review needed.
2026-05-11T08:04:31Z mediaingredientmech-agentic-curation LLM REVIEWED_FORMULA_SHORTHAND UNMAPPED Classified as a single inorganic double-salt hydrate and left unmapped because the condensed formula resembles chromium potassium sulfate dodecahydrate but lacks locally verified exact ontology evidence.
2026-08-06T00:00:00+00:00 edison_literature_identity LLM ANNOTATED Edison LITERATURE (PaperQA3) identity research; report at research/ingredients/CrKSO42_x_12_H2O-edison-literature.md (local artifact — research/ is gitignored, so the findings are quoted here rather than linked). Report verdict: | Recommendation | Keep ontology mapping unset unless a stable ontology identifier is independently confirmed; do not mint label-only CURIEs | No ontology CURIE was proposed. Recorded as provenance only — no grounding applied from this run. Edison's recommendations are deliberately conservative, and a plausible identifier promoted by a mechanism that never decided anything is what #203 and #263 exist to undo. Any CURIE above is a curator's to accept or reject.
2026-08-07T00:00:00+00:00 edison_cas_enrichment LLM ADDED_CAS_RN Added cas_rn 7788-99-0 (potassium chromium(III) sulfate dodecahydrate) from Edison literature research: the report equates chrome alum with KCr(SO4)2*12H2O from peer-reviewed literature and gives CAS RN 7788-99-0 from a chemical reference, listing it under an unqualified "CAS Registry Number:" heading. Enrichment only — the mapping status is unchanged, because a CAS identifies a substance without supplying an ontology term. Applied only because the report AFFIRMS the number for this record's own substance: the same scan pulled CAS numbers out of five other reports that forbid them outright (HBO3, α-D-Glucose monohydrate, Larchwood xylan, Sigmacell alpha Type 50, dextran Mw ~1,270), because a CAS printed in a rejected-candidate row looks identical to one in a conclusion.
2026-08-07T00:00:00+00:00 promote_resolved_unmapped PROMOTED_TO_MAPPED MAPPED Promoted UNMAPPED_0369 -> cas:7788-99-0 "chromium(III) sulfate" (NARROW_MATCH); mapping_status UNMAPPED -> MAPPED, SSSOM row added.
2026-08-13T00:00:00+00:00 regrade_hydrate_to_close_match REGRADED_HYDRATE_TO_CLOSE_MATCH mapping_quality NARROW_MATCH -> CLOSE_MATCH (#342); a hydrate is not subsumed by its anhydrous form, and ChEBI does not model it as such.