MgCl2x 6 H2O

Ontology mapping

Primary identifier: CHEBI:86345
Ontology label: magnesium dichloride hexahydrate
kg-microbe node: CHEBI:86345

Nutritional roles

Role
MINERAL_SOURCE
Confidence
1.0
Evidence
- Reference text
  CultureMech database (7 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 (7 occurrences). High confidence based on 'Defined component' property.

Synonyms (9)

Synonym	Type	Source
Role: Mineral source; Properties: Inorganic compound, Defined component, Simple component	RAW_TEXT	CultureMech
MgCl2 x 7 H2O	HYDRATE_FORM	kg_microbe
MgCl2 x 76 H2O	HYDRATE_FORM	kg_microbe
MgCl2 X 6H2O	HYDRATE_FORM	kg_microbe
MgCl2 x 7 H2O	HYDRATE_FORM	kg_microbe
MgCl2 x 7H2O	HYDRATE_FORM	kg_microbe
MgCl2x7H2O	HYDRATE_FORM	kg_microbe
MgCl2 x 6H2O	HYDRATE_FORM	kg_microbe
Role: Mineral source; Properties: Defined component, Inorganic compound, Simple component	RAW_TEXT	CultureMech

Rejected enrichment labels (1)

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

Rejected label	Disposition	Source	Occurrences
Magnesium chloride anhydrous	REJECTED_LABEL	kg_microbe

Chemical properties

Cas rn: 12285-34-6
Data source: NCI CACTUS Chemical Identifier Resolver
Retrieval date: 2026-04-05T21:54:37.387740+00:00
Molecular formula: 2Cl.Mg
Inchi: InChI=1S/2ClH.Mg/h2*1H;/q;;+2/p-2
Smiles: [Cl-].[Cl-].[Mg+2]

Evidence (2)

DATABASE_MATCH via CultureMech

Imported from CultureMech pipeline, quality=DIRECT_MATCH

MANUAL_CURATION via MIM curation (#312); chebi.db

REJECTED tombstone (merged into Mgcl2_X_6_H2o by #414): its identifier was re-pointed to CHEBI:86345 on 2026-08-20 but ontology_mapping still named CHEBI:6636 'magnesium dichloride', so the anhydrous label was still claimed by a hexahydrate record (#232). Point the mapping at the hexahydrate term and retype the anhydrous alias REJECTED_LABEL.

Occurrence statistics

Total occurrences: 0
Distinct media: 0

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
2026-04-05T21:54:33.472625+00:00	fetch_cas_rn_from_cactus	ADDED_CAS_RN	MAPPED	Added CAS-RN:12285-34-6 from NCI CACTUS via name lookup (MgCl2 x 6H2O)
2026-04-05T21:54:37.387766+00:00	fetch_cas_rn_from_cactus	ADDED_CAS_RN	MAPPED	Added CAS-RN:12285-34-6 from NCI CACTUS via name lookup (MgCl2x 6 H2O)
2026-04-18T00:00:00+00:00	cbclaw_kg_microbe_sweep LLM	ADDED_SYNONYMS	MAPPED	Added 8 synonyms from kg-microbe P4.4 enrichment: Magnesium chloride anhydrous, MgCl2 x 7 H2O, MgCl2 x 76 H2O, MgCl2 X 6H2O, MgCl2 x 7 H2O, ... (3 more)
2026-04-18T00:00:00+00:00	cbclaw_kg_microbe_sweep LLM	ADDED_SYNONYMS	MAPPED	Added 7 synonyms from kg-microbe P4.4 enrichment: Magnesium chloride anhydrous, MgCl2 x 7 H2O, MgCl2 x 76 H2O, MgCl2 x 7 H2O, MgCl2 x 7H2O, ... (2 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: Mgcl2_X_6h2o.yaml. Synonyms, curation_history, and occurrence counts were unioned/summed; winner selected by highest occurrence count with preferred_term readability tie-break.
2026-05-01T07:35:34.772555+00:00	auto_classify_ingredient_type	AUTO_CLASSIFY_INGREDIENT_TYPE		set ingredient_type=SINGLE_INGREDIENT (CHEBI primary)
2026-05-01T08:08:30.813991+00:00	auto_classify_ingredient_type	AUTO_BACKFILL_CHEBI_CHEMISTRY		molecular_formula=2Cl.Mg; inchi=InChI=1S/2ClH.Mg/h2*1H;/q;;+2/p-2; smiles=[Cl-].[Cl-].[Mg+2]
2026-05-02T03:12:16.450036+00:00	auto_classify_ingredient_type	AUTO_CLASSIFY_INGREDIENT_TYPE		set ingredient_type=SINGLE_INGREDIENT (chemical structure populated (molecular_formula))
2026-05-29T23:35:36.111884+00:00	extract_roles_from_synonyms	ANNOTATED		Added media role: MINERAL (confidence: 1.00)
2026-07-20T00:00:00+00:00	migrate_media_roles_to_facets	ANNOTATED		Migrated legacy media_roles to role facets (#128): MINERAL -> nutritional_roles.MINERAL_SOURCE
2026-08-10T00:00:00+00:00	regrade_synonym_matches	REGRADED_EXACT_TO_SYNONYM		mapping_quality EXACT_MATCH -> SYNONYM_MATCH (#317). The record's label does not equal the term's primary label 'magnesium dichloride'; it matches the ChEBI synonym 'Magnesium chloride anhydrous' on CHEBI:6636. The schema defines EXACT_MATCH as a direct match to the term and SYNONYM_MATCH as a match to a known synonym, so the recorded grade overstated. ontology_id is unchanged — the term is correct. The SSSOM predicate is unaffected (both grades emit skos:exactMatch).
2026-08-20T00:00:00+00:00	merge_identifier_collisions	MERGED_INTO		Merged into 'MgCl2 x 6 H2O' on CHEBI:86345, re-pointed from CHEBI:6636 (#414). the identical label with one space missing, yet grounded to different terms: the 2,285-occurrence spelling sits on magnesium dichloride HEXAHYDRATE and the 7-occurrence spelling on the ANHYDROUS salt. The label says '6 H2O' either way, so the anhydrous grounding is simply wrong. Merging both fixes that grounding and clears CHEBI:6636's collision, leaving only 'MgCl2' on the anhydrous term where it belongs.
2026-09-09T00:00:00+00:00	fix_kg_microbe_node_id_drift	CORRECTED		kg_microbe_node_id CHEBI:6636 -> CHEBI:86345 (#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.
2026-09-22T23:25:51.063197+00:00	claude LLM	CORRECTED	REJECTED	ontology_id CHEBI:6636 -> CHEBI:86345 (#312). REJECTED tombstone (merged into Mgcl2_X_6_H2o by #414): its identifier was re-pointed to CHEBI:86345 on 2026-08-20 but ontology_mapping still named CHEBI:6636 'magnesium dichloride', so the anhydrous label was still claimed by a hexahydrate record (#232). Point the mapping at the hexahydrate term and retype the anhydrous alias REJECTED_LABEL.