MgSO4 x 6 H2O

kgmicrobe.compound:mgso4_x_6_h2o chemically defined MAPPED CHEBI NARROW_MATCH

Ontology mapping

Primary identifier
kgmicrobe.compound:mgso4_x_6_h2o
Ontology term
CHEBI:32599 — magnesium sulfate
Ontology label
magnesium sulfate

Nutritional roles

Synonyms (3)

SynonymTypeSourceOccurrences
MgSO4 x 6H2O HYDRATE_FORM kg_microbe
Role: Mineral source; Properties: Inorganic compound, Defined component, Simple component RAW_TEXT CultureMech
MgSO4·6H2O HYDRATE_FORM MIM curation (#652)

Rejected enrichment labels (15)

Provenance-only candidates: these are not synonyms and do not resolve to this record.

Rejected labelDispositionSourceOccurrences
MgSO4 . 7H2O REJECTED_LABEL kg_microbe
MgSO4 . H2O REJECTED_LABEL kg_microbe
MgSO4 x 7 H2O (0.1% w/v) REJECTED_LABEL kg_microbe
MgSO4 x 7 H2O (100 mM) REJECTED_LABEL kg_microbe
MgSO4 x 7 H2O solution (25%) REJECTED_LABEL kg_microbe
MgSO4 x 7 H2O to 15.0 g). REJECTED_LABEL kg_microbe
MgSO4 x 7H2O REJECTED_LABEL kg_microbe
MgSO4 x H2O REJECTED_LABEL kg_microbe
MgSO4 x7 H2O REJECTED_LABEL kg_microbe
MgSO4 x7H2O REJECTED_LABEL kg_microbe
MgSO4 · 7H2O REJECTED_LABEL kg_microbe
MgSO4 ·7H2O REJECTED_LABEL kg_microbe
Mg2SO4 REJECTED_LABEL sssom_other_backfill
MgSO .7H O REJECTED_LABEL sssom_other_backfill
MgSO4 × 7 H2O REJECTED_LABEL sssom_other_backfill

Chemical properties

Molecular formula
Mg.O4S.6H2O
Data source
MIM curation (#652)

Evidence (3)

DATABASE_MATCH via CultureMech

Imported from CultureMech pipeline, quality=DIRECT_MATCH

DATABASE_MATCH via MIM curation (#321)

molecular_formula 'Mg.O4S' -> 'Mg.O4S.6H2O'. 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 6 water(s) of hydration, and the recorded formula was byte-identical to the anhydrous parent CHEBI:32599's ChEBI formula ('Mg.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.

CURATOR_JUDGMENT via MIM curation (#652)

MgSO4 x 6 H2O names a formula-supported hydrate, but no exact external ontology term is verified. CHEBI:32599 (magnesium sulfate) is retained only as the asymmetric anhydrous parent while the supplied hydrate keeps a local kgmicrobe.compound identity.

Occurrence statistics

Total occurrences
35
Distinct media
35

Curation history

TimestampCuratorActionNew statusChanges
2026-03-09T06:54:18.022301+00:00 import_from_culturemech IMPORTED MAPPED Initial import from CultureMech pipeline
2026-04-05T21:48:45.361651+00:00 fetch_cas_rn_from_culturebot_csv ADDED_CAS_RN MAPPED Added CAS-RN:7487-88-9 from CultureBotHT compounds_to_cas.csv (matched: MgSO4 x 6H2O)
2026-04-09T00:32:50.689620+00:00 enrich_mim_cas_rn_batch CAS_RN_ADDED MAPPED Added CAS-RN 7487-88-9 from CultureBotHT/compounds_to_cas.csv
2026-04-18T00:00:00+00:00 cbclaw_kg_microbe_sweep LLM ADDED_SYNONYMS MAPPED Added 13 synonyms from kg-microbe P4.4 enrichment: MgSO4 . 7H2O, MgSO4 . H2O, MgSO4 x 6H2O, MgSO4 x 7 H2O (0.1% w/v), MgSO4 x 7 H2O (100 mM), ... (8 more)
2026-04-18T00:00:00+00:00 cbclaw_kg_microbe_sweep LLM ADDED_SYNONYMS MAPPED Added 13 synonyms from kg-microbe P4.4 enrichment: MgSO4 . 7H2O, MgSO4 . H2O, MgSO4 x 6 H2O, MgSO4 x 7 H2O (0.1% w/v), MgSO4 x 7 H2O (100 mM), ... (8 more)
2026-04-19T07:23:20.785693+00:00 audit_mim_merge MERGED_FROM_DUPLICATES MAPPED Absorbed 1 duplicate MIM record(s) into this one: Mgso4_X_6h2o.yaml. Synonyms, curation_history, and occurrence counts were unioned/summed; winner selected by highest occurrence count with preferred_term readability tie-break.
2026-05-01T07:35:34.790505+00:00 auto_classify_ingredient_type AUTO_CLASSIFY_INGREDIENT_TYPE set ingredient_type=SINGLE_INGREDIENT (CHEBI primary)
2026-05-01T08:08:30.833010+00:00 auto_classify_ingredient_type AUTO_BACKFILL_CHEBI_CHEMISTRY molecular_formula=Mg.O4S; inchi=InChI=1S/Mg.H2O4S/c;1-5(2,3)4/h;(H2,1,2,3,4)/q+2;/; smiles=O=S(=O)([O-])[O-].[Mg+2]
2026-05-02T03:12:16.471454+00:00 auto_classify_ingredient_type AUTO_CLASSIFY_INGREDIENT_TYPE set ingredient_type=SINGLE_INGREDIENT (chemical structure populated (molecular_formula))
2026-05-29T23:35:36.111908+00:00 extract_roles_from_synonyms ANNOTATED Added media role: MINERAL (confidence: 1.00)
2026-06-09T05:23:46.797331+00:00 correct_stale_ontology_labels.py CORRECTED ontology_label 'MgSO4 x 6 H2O' -> 'magnesium sulfate': synced to canonical CHEBI label (preferred_term 'MgSO4 x 6 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.SULFUR_SOURCE
2026-07-20T20:01:42.981644+00:00 migrate_media_roles_to_facets CORRECTED Added nutritional role(s) MINERAL_SOURCE missed by the initial #128 migration: the residual MINERAL_SOURCE bucket was suppressed whenever any other target existed, which dropped the bulk cation from salts whose other role describes the anion (e.g. MgSO4).
2026-08-13T00:00:00+00:00 add_water_of_hydration ADDED_WATER_OF_HYDRATION molecular_formula 'Mg.O4S' -> 'Mg.O4S.6H2O' (#321); the label states 6 water(s) of hydration, and the recorded formula was byte-identical to the anhydrous parent CHEBI:32599's ChEBI formula ('Mg.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.
2026-08-27T03:16:39.519304+00:00 refresh_occurrence_statistics CORRECTED occurrence_statistics 20/20 -> 712/714 (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]
2026-09-02T22:41:49.137449+00:00 claude_sssom_surface_form_backfill ADDED_SYNONYMS Recovered 3 surface form(s) that the published SSSOM `other` carried but no curated record did, so a rebuild would have dropped them from KGX: 'Mg2SO4'; 'MgSO .7H O'; 'MgSO4 × 7 H2O'. Tokens already present on the kg-microbe ontology node were left out as redundant (#520).
2026-09-12T00:00:00+00:00 reject_hidden_hydrate_synonym_collapses REJECTED_HIDDEN_HYDRATE_SYNONYMS MAPPED Marked hidden hydrate synonym(s) as REJECTED_LABEL so this record no longer resolves sibling hydrate identities (#251): 'MgSO4 . 7H2O', 'MgSO4 . H2O', 'MgSO4 x 7 H2O (0.1% w/v)', 'MgSO4 x 7 H2O (100 mM)', 'MgSO4 x 7 H2O solution (25%)', 'MgSO4 x 7 H2O to 15.0 g).', 'MgSO4 x 7H2O', 'MgSO4 x H2O', 'MgSO4 x7 H2O', 'MgSO4 x7H2O', 'MgSO4 · 7H2O', 'MgSO4 ·7H2O', 'MgSO4 × 7 H2O'.
2026-09-12T00:00:00+00:00 fix_hydrate_local_identities LOCALIZED_HYDRATE_IDENTITY MAPPED identifier CHEBI:32599 -> kgmicrobe.compound:mgso4_x_6_h2o; mapping_quality EXACT_MATCH -> NARROW_MATCH. Preserved the curated formula Mg.O4S.6H2O, cleared parent-derived chemical_properties {'cas_rn': '7487-88-9', 'data_source': 'CultureBotHT/compounds_to_cas.csv', 'retrieval_date': '2026-04-09T00:32:50.689620+00:00', 'molecular_formula': 'Mg.O4S.6H2O', 'inchi': 'InChI=1S/Mg.H2O4S/c;1-5(2,3)4/h;(H2,1,2,3,4)/q+2;/p-2', 'smiles': 'O=S(=O)([O-])[O-].[Mg+2]'}, and marked 2 parent-derived synonym(s) as REJECTED_LABEL (#652).
2026-09-12T00:00:00+00:00 fix_hydrate_local_identities REFRESHED_HYDRATE_OCCURRENCES MAPPED occurrence_statistics 712/714 -> 32/32 after moving reviewed hydrate source labels off their anhydrous parent identifiers and onto their exact hydrate identities (#652).
2026-09-12T00:00:00+00:00 fix_hydrate_local_identities ADDED_HYDRATE_FORM_SYNONYMS MAPPED Added MgSO4·6H2O as reviewed HYDRATE_FORM source label(s) for the local hydrate identity (#663).
2026-09-12T00:00:00+00:00 fix_hydrate_local_identities REFRESHED_HYDRATE_OCCURRENCES MAPPED occurrence_statistics 32/32 -> 35/35 after moving reviewed hydrate source labels off their anhydrous parent identifiers and onto their exact hydrate identities (#652).