Magnesium sulfate

Ontology mapping

Primary identifier: CHEBI:32599
Ontology label: magnesium sulfate
kg-microbe node: CHEBI:32599

Nutritional roles

Role
SULFUR_SOURCE
Confidence
1.0
Evidence
- Reference text
  CultureMech database (525 occurrences as 'Mineral source')
  Reference type
  DATABASE_ENTRY
  Url
  https://github.com/CultureBotAI/CultureMech
  Excerpt
  Role: Mineral source; Properties: Defined component, Inorganic compound, Simple component
  Curator note
  Widespread use in media formulations (525 occurrences). High confidence based on 'Defined component' property.
Role
MINERAL_SOURCE
Confidence
0.8
Evidence

Synonyms (11)

Synonym	Type	Source
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
Role: Mineral source; Properties: Inorganic compound, Simple component, Defined component	RAW_TEXT	CultureMech
Role: Mineral source; Properties: Simple component, Inorganic compound, Defined component	RAW_TEXT	CultureMech
Magnesium sulfate (1:1)	EXACT_SYNONYM	kg_microbe
Magnesiumsulfat	EXACT_SYNONYM	kg_microbe
Mg2SO4	EXACT_SYNONYM	kg_microbe
MgSO .7H O	EXACT_SYNONYM	kg_microbe
MgSO4	EXACT_SYNONYM	merged_from_duplicate_mim_record
Role: Mineral source; Properties: Defined component, Simple component, Inorganic compound	RAW_TEXT	CultureMech
Role: Mineral source; Properties: Inorganic compound, Defined component	RAW_TEXT	CultureMech

Rejected enrichment labels (16)

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

Rejected label	Disposition	Source
MgSO4 × 7 H2O	REJECTED_LABEL	kg_microbe
MgSO4 x H2O	REJECTED_LABEL	merged_from_duplicate_mim_record
MgSO4 . 7H2O	REJECTED_LABEL	kg_microbe
MgSO4 . H2O	REJECTED_LABEL	kg_microbe
MgSO4 x 6 H2O	REJECTED_LABEL	kg_microbe
MgSO4 x 6H2O	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 x7 H2O	REJECTED_LABEL	kg_microbe
MgSO4 x7H2O	REJECTED_LABEL	kg_microbe
MgSO4 · 7H2O	REJECTED_LABEL	kg_microbe
MgSO4 ·7H2O	REJECTED_LABEL	kg_microbe
MgSO4·6H2O	REJECTED_LABEL	sssom_other_backfill

Chemical properties

Cas rn: 7487-88-9
Data source: PubChem API
Retrieval date: 2026-04-05T19:52:50.147437+00:00
Molecular formula: Mg.O4S
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]

Evidence (1)

DATABASE_MATCH via CultureMech

Imported from CultureMech pipeline, quality=DIRECT_MATCH

Occurrence statistics

Total occurrences: 679
Distinct media: 677

Curation history

Timestamp	Curator	Action	New status	Changes
2026-03-09T06:54:18.022301+00:00	import_from_culturemech	IMPORTED	MAPPED	Initial import from CultureMech pipeline
2026-04-05T19:52:50.147486+00:00	fetch_cas_rn_from_pubchem	ADDED_CAS_RN	MAPPED	Added CAS-RN:7487-88-9 from PubChem API via name lookup (Magnesium sulfate)
2026-04-05T21:48:45.306032+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: Magnesium Sulfate)
2026-04-05T21:48:45.351812+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)
2026-04-09T00:32:50.689620+00:00	enrich_mim_cas_rn_batch	CAS_RN_ADDED	MAPPED	Added CAS-RN 7487-88-9 from PubChem (via CHEBI:32599)
2026-04-18T00:00:00+00:00	cbclaw_kg_microbe_sweep LLM	ADDED_SYNONYMS	MAPPED	Added 5 synonyms from kg-microbe P4.4 enrichment: Magnesium sulfate (1:1), Magnesiumsulfat, Mg2SO4, MgSO .7H O, MgSO4 × 7 H2O
2026-04-18T00:00:00+00:00	cbclaw_kg_microbe_sweep LLM	ADDED_SYNONYMS	MAPPED	Added 5 synonyms from kg-microbe P4.4 enrichment: Magnesium Sulfate, Magnesium sulfate (1:1), Magnesiumsulfat, Mg2SO4, MgSO .7H O
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 6H2O, MgSO4 x 7 H2O (0.1% w/v), ... (8 more)
2026-04-19T07:39:23.955331+00:00	audit_mim_merge	MERGED_FROM_DUPLICATES	MAPPED	Absorbed 3 duplicate MIM record(s) into this one: Mgso4.yaml, Magnesium_Sulfate_2.yaml, Mgso4_X_H2o.yaml. Synonyms, curation_history, and occurrence counts were unioned/summed; winner selected by highest occurrence count with preferred_term readability tie-break.
2026-05-01T07:35:34.579805+00:00	auto_classify_ingredient_type	AUTO_CLASSIFY_INGREDIENT_TYPE		set ingredient_type=SINGLE_INGREDIENT (CHEBI primary)
2026-05-01T08:08:30.612961+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]
2026-05-02T03:12:16.113145+00:00	auto_classify_ingredient_type	AUTO_CLASSIFY_INGREDIENT_TYPE		set ingredient_type=SINGLE_INGREDIENT (chemical structure populated (molecular_formula))
2026-05-29T23:35:36.111749+00:00	extract_roles_from_synonyms	ANNOTATED		Added media role: MINERAL (confidence: 1.00)
2026-06-09T05:23:46.791344+00:00	correct_stale_ontology_labels.py	CORRECTED		ontology_label 'Magnesium sulfate' -> 'magnesium sulfate': synced to canonical CHEBI label (preferred_term 'Magnesium sulfate' 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).
2026-08-27T03:16:39.519225+00:00	refresh_occurrence_statistics	CORRECTED		occurrence_statistics 114/525 -> 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 1 surface form(s) that the published SSSOM `other` carried but no curated record did, so a rebuild would have dropped them from KGX: 'MgSO4·6H2O'. 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 × 7 H2O', 'MgSO4 x H2O', 'MgSO4 . 7H2O', 'MgSO4 . H2O', 'MgSO4 x 6 H2O', 'MgSO4 x 6H2O', '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 x7 H2O', 'MgSO4 x7H2O', 'MgSO4 · 7H2O', 'MgSO4 ·7H2O', 'MgSO4·6H2O'.
2026-09-12T00:00:00+00:00	fix_hydrate_local_identities	REFRESHED_HYDRATE_OCCURRENCES	MAPPED	occurrence_statistics 712/714 -> 680/682 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	REFRESHED_HYDRATE_OCCURRENCES	MAPPED	occurrence_statistics 680/682 -> 677/679 after moving reviewed hydrate source labels off their anhydrous parent identifiers and onto their exact hydrate identities (#652).