CoSO4 x 7 H2O

CHEBI:91244 chemically defined MAPPED CHEBI EXACT_MATCH

Ontology mapping

Primary identifier
CHEBI:91244
Ontology label
cobalt(2+) sulfate heptahydrate
kg-microbe node
CHEBI:91244

Nutritional roles

Synonyms (8)

SynonymTypeSourceOccurrences
Role: Mineral source; Properties: Defined component, Inorganic compound, Simple component RAW_TEXT CultureMech
Role: Mineral source; Properties: Inorganic compound, Defined component, Simple component RAW_TEXT CultureMech
CoSO4 . 7H2O HYDRATE_FORM kg_microbe
CoSO4 ⋅ 7H2O HYDRATE_FORM kg_microbe
CoSO4.7H2O HYDRATE_FORM kg_microbe
CoSO4·7H2O HYDRATE_FORM kg_microbe
CoSO4・7H2O HYDRATE_FORM kg_microbe
Cobalt sulfate heptahydrate RAW_TEXT culturemech:output/ingredient_occurrences.tsv

Chemical properties

Cas rn
10026-24-1
Data source
PubChem (via CHEBI:53470)
Retrieval date
2026-04-09T00:32:50.689620+00:00
Molecular formula
Co.O4S.7H2O
Inchi
InChI=1S/Co.H2O4S/c;1-5(2,3)4/h;(H2,1,2,3,4)/q+2;/p-2
Smiles
O=S(=O)([O-])[O-].[Co+2]

Evidence (3)

DATABASE_MATCH via CultureMech

Imported from CultureMech pipeline, quality=DIRECT_MATCH

DATABASE_MATCH via MIM curation (#321)

molecular_formula 'Co.O4S' -> 'Co.O4S.7H2O'. The recorded value described the anhydrous salt while the label names a hydrate, understating the mass by 18 g/mol per water. Corrected because the label states 7 water(s) of hydration, and the recorded formula was byte-identical to the anhydrous parent CHEBI:53470's ChEBI formula ('Co.O4S') — the mark of a value inherited from the parent rather than measured for this record. Water appended in ChEBI's own dot-separated notation.

DATABASE_MATCH via MIM curation (#374/#334)

Promoted from CHEBI:53470 ('cobalt(2+) sulfate') to the specific hydrate term CHEBI:91244 ('cobalt(2+) sulfate heptahydrate') — MAPPING_SEMANTICS §3 step 1: the label names a hydrate, ChEBI has the term, so nothing needs minting and no closeMatch question arises. The previous term carried no water while the label states it. Found by cross-checking CultureBotAI/CultureMech#272 (#374/#334).

Occurrence statistics

Total occurrences
828
Distinct media
828

Curation history

TimestampCuratorActionNew statusChanges
2026-03-09T06:54:18.022301+00:00 import_from_culturemech IMPORTED MAPPED Initial import from CultureMech pipeline
2026-04-09T00:32:50.689620+00:00 enrich_mim_cas_rn_batch CAS_RN_ADDED MAPPED Added CAS-RN 10124-43-3 from PubChem (via CHEBI:53470)
2026-04-18T00:00:00+00:00 cbclaw_kg_microbe_sweep LLM ADDED_SYNONYMS MAPPED Added 5 synonyms from kg-microbe P4.4 enrichment: CoSO4 . 7H2O, CoSO4 ⋅ 7H2O, CoSO4.7H2O, CoSO4·7H2O, CoSO4・7H2O
2026-05-01T07:35:32.896913+00:00 auto_classify_ingredient_type AUTO_CLASSIFY_INGREDIENT_TYPE set ingredient_type=SINGLE_INGREDIENT (CHEBI primary)
2026-05-01T08:08:28.779999+00:00 auto_classify_ingredient_type AUTO_BACKFILL_CHEBI_CHEMISTRY molecular_formula=Co.O4S; inchi=InChI=1S/Co.H2O4S/c;1-5(2,3)4/h;(H2,1,2,3,4)/q+2;/; smiles=O=S(=O)([O-])[O-].[Co+2]
2026-05-02T03:12:13.522146+00:00 auto_classify_ingredient_type AUTO_CLASSIFY_INGREDIENT_TYPE set ingredient_type=SINGLE_INGREDIENT (chemical structure populated (molecular_formula))
2026-05-29T23:35:36.110751+00:00 extract_roles_from_synonyms ANNOTATED Added media role: MINERAL (confidence: 1.00)
2026-06-09T05:23:46.745368+00:00 correct_stale_ontology_labels.py CORRECTED ontology_label 'CoSO4 x 7 H2O' -> 'cobalt(2+) sulfate': synced to canonical CHEBI label (preferred_term 'CoSO4 x 7 H2O' unchanged).
2026-07-20T00:00:00+00:00 migrate_media_roles_to_facets ANNOTATED Migrated legacy media_roles to role facets (#128): MINERAL -> nutritional_roles.TRACE_ELEMENT
2026-08-13T00:00:00+00:00 add_water_of_hydration ADDED_WATER_OF_HYDRATION molecular_formula 'Co.O4S' -> 'Co.O4S.7H2O' (#321); the label states 7 water(s) of hydration, and the recorded formula was byte-identical to the anhydrous parent CHEBI:53470's ChEBI formula ('Co.O4S') — the mark of a value inherited from the parent rather than measured for this record. Water appended in ChEBI's own dot-separated notation.
2026-08-15T00:00:00+00:00 fix_hydrate_terms_and_twins PROMOTED_TO_SPECIFIC_HYDRATE identifier/ontology_id CHEBI:53470 -> CHEBI:91244; Promoted from CHEBI:53470 ('cobalt(2+) sulfate') to the specific hydrate term CHEBI:91244 ('cobalt(2+) sulfate heptahydrate') — MAPPING_SEMANTICS §3 step 1: the label names a hydrate, ChEBI has the term, so nothing needs minting and no closeMatch question arises. The previous term carried no water while the label states it. Found by cross-checking CultureBotAI/CultureMech#272 (#374/#334).
2026-08-27T03:16:39.518609+00:00 refresh_occurrence_statistics CORRECTED occurrence_statistics 50/693 -> 828/828 (media_count/total_occurrences), derived from distinct CultureMech recipe ids in the #337 occurrence table. The prior values came from the importer retired in #453, whose media_count counted a list truncated to 50 examples (#449). [source=ingredient_occurrences.tsv culturemech_rev=15a4da5c08 rows=194137 distinct_recipes=15257]
2026-08-29T04:18:06.717487+00:00 hydrate_family_cas CORRECTED cas_rn 10124-43-3 -> 10026-24-1. 10124-43-3 is the ANHYDROUS parent's CAS; this record is grounded to CHEBI:91244 cobalt(2+) sulfate heptahydrate, whose ChEBI dbxref is 10026-24-1 (#334).
2026-08-30T10:32:26.469831+00:00 claude_culturemech_alias_backfill ADDED_SYNONYMS Added 1 CultureMech recipe surface form(s) that folded onto this record's published label but were absent from MIM's label index, so CultureMech could not resolve them: 'Cobalt sulfate heptahydrate' (x1 CultureMech mentions). Source: culturemech:output/ingredient_occurrences.tsv.
2026-09-09T00:00:00+00:00 fix_kg_microbe_node_id_drift CORRECTED kg_microbe_node_id CHEBI:53470 -> CHEBI:91244 (#554). The compatibility node id lagged a same-prefix identifier correction; the downstream node id must match the curated identifier unless a record intentionally crosses CURIE prefixes.