Ontology mapping
- Primary identifier
-
CHEBI:53542 - Ontology label
- nickel chloride hexahydrate
- Notes
- Created from FEBA ontology enrichment workflow. Used in 122 FEBA media formulations.
Nutritional roles
- Role
- TRACE_ELEMENT
- Confidence
- 0.6
- Evidence
- Reference type
- COMPUTATIONAL_PREDICTION
- Reference text
- Assigned by in-session Claude reasoning (no external API)
- Curator note
- Provisional in-session LLM role assignment; review recommended.
Synonyms (6)
| Synonym | Type | Source | Occurrences |
|---|---|---|---|
| Nickel chloride hexahydrate | EXACT_SYNONYM | kg_microbe | |
| Nickel dichloride hexahydrate | EXACT_SYNONYM | kg_microbe | |
| Nickel(II) chloride, hexahydrate | EXACT_SYNONYM | kg_microbe | |
| nickel(II) chloride hexahydrate | EXACT_SYNONYM | kg_microbe | |
| nickel chloride--water (1/6) | EXACT_SYNONYM | chebi_synonym_review | |
| NiCl2 x 6 H2O | RAW_TEXT | MERGED_FROM_CHEBI:34887 |
Chemical properties
- Cas rn
- 7791-20-0
- Data source
- FEBA ontology enrichment (via PubChem)
- Retrieval date
- 2026-04-07T10:19:49.430183+00:00
- Molecular formula
- 2Cl.6H2O.Ni
- Inchi
- InChI=1S/2ClH.Ni.6H2O/h2*1H;;6*1H2/q;;+2;;;;;;/p-2
- Smiles
- O.O.O.O.O.O.[Cl-].[Cl-].[Ni+2]
Evidence (1)
CAS_RN_CROSS_REFERENCE
via PubChem
ChEBI ID CHEBI:53542 found via PubChem CAS-RN cross-reference
Occurrence statistics
- Total occurrences
- 2,992
- Distinct media
- 2,991
Curation history
| Timestamp | Curator | Action | New status | Changes |
|---|---|---|---|---|
| 2026-04-07T10:19:49.430172+00:00 | feba_ontology_enrichment_batch | CREATED | MAPPED | Created ingredient file from FEBA ontology enrichment batch with ChEBI ID CHEBI:53542 |
| 2026-04-18T00:00:00+00:00 | cbclaw_kg_microbe_sweep LLM | ADDED_SYNONYMS | MAPPED | Added 4 synonyms from kg-microbe P4.4 enrichment: Nickel chloride hexahydrate, Nickel dichloride hexahydrate, Nickel(II) chloride, hexahydrate, nickel(II) chloride hexahydrate |
| 2026-05-01T07:35:35.510061+00:00 | auto_classify_ingredient_type | AUTO_CLASSIFY_INGREDIENT_TYPE | set ingredient_type=SINGLE_INGREDIENT (CHEBI primary) | |
| 2026-05-01T08:08:31.605228+00:00 | auto_classify_ingredient_type | AUTO_BACKFILL_CHEBI_CHEMISTRY | molecular_formula=2Cl.6H2O.Ni; inchi=InChI=1S/2ClH.Ni.6H2O/h2*1H;;6*1H2/q;;+2;;;;;;/p-2; smiles=O.O.O.O.O.O.[Cl-].[Cl-].[Ni+2] | |
| 2026-05-02T03:12:17.383537+00:00 | auto_classify_ingredient_type | AUTO_CLASSIFY_INGREDIENT_TYPE | set ingredient_type=SINGLE_INGREDIENT (chemical structure populated (molecular_formula)) | |
| 2026-06-09T04:56:30.248114+00:00 | claude_in_session_curation | ANNOTATED | Added media role: TRACE_ELEMENT (confidence: 0.60) | |
| 2026-07-20T00:00:00+00:00 | migrate_media_roles_to_facets | ANNOTATED | Migrated legacy media_roles to role facets (#128): TRACE_ELEMENT -> nutritional_roles.TRACE_ELEMENT | |
| 2026-08-13T00:00:00+00:00 | fix_hydrate_collapse | MERGED_FROM | Absorbed 'NiCl2 x 6 H2O', which sat on the anhydrous term CHEBI:34887 (#321/#334). Same substance in formula notation — a form the merge pass does not recognise, so it escaped dedup and was then grounded to the nearest lexical match. Occurrences 122/122 + 2832/101 -> 2954/223. Raw label kept as a RAW_TEXT synonym. | |
| 2026-08-27T03:16:39.519612+00:00 | refresh_occurrence_statistics | CORRECTED | occurrence_statistics 223/2954 -> 2991/2992 (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] |