Ontology mapping
- Primary identifier
-
CHEBI:53542 - Ontology label
- nickel chloride hexahydrate
- kg-microbe node
CHEBI:53542
Nutritional roles
- Role
- TRACE_ELEMENT
- Confidence
- 1.0
- Evidence
- Reference text
- CultureMech database (2832 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 (2832 occurrences). High confidence based on 'Defined component' property.
Synonyms (17)
| Synonym | Type | Source | Occurrences |
|---|---|---|---|
| Role: Mineral source; Properties: Inorganic compound, Defined component, Simple component | RAW_TEXT | CultureMech | |
| NiCl2 . 6H2O | HYDRATE_FORM | kg_microbe | |
| NiCl2 x 6 H2O (0.1% w/v) | HYDRATE_FORM | kg_microbe | |
| NiCl2 x 6H2O | HYDRATE_FORM | kg_microbe | |
| NiCl2 x H2O | HYDRATE_FORM | kg_microbe | |
| NiCl2 · 6H2O | HYDRATE_FORM | kg_microbe | |
| NiCl2.6H2O | HYDRATE_FORM | kg_microbe | |
| NiCl2x6H2O | HYDRATE_FORM | kg_microbe | |
| NiCl2·6H2O | HYDRATE_FORM | kg_microbe | |
| NiCl2⋅6H2O | HYDRATE_FORM | kg_microbe | |
| NiCl2・6H2O | HYDRATE_FORM | kg_microbe | |
| NiCl2・H2O | HYDRATE_FORM | kg_microbe | |
| NiCl2 ∙ 6 H2O | HYDRATE_FORM | kg_microbe_via_hydration_routing | |
| NiCl2∙6H2O | HYDRATE_FORM | kg_microbe_via_hydration_routing | |
| Role: Mineral source; Properties: Defined component, Inorganic compound, Simple component | RAW_TEXT | CultureMech | |
| Role: Mineral source; Properties: Defined component, Simple component, Inorganic compound | RAW_TEXT | CultureMech | |
| Role: Mineral source; Properties: Solution, Defined component | RAW_TEXT | CultureMech |
Rejected enrichment labels (7)
Provenance-only candidates: these are not synonyms and do not resolve to this record.
| Rejected label | Disposition | Source | Occurrences |
|---|---|---|---|
| NiCl2 x 2 H2O | REJECTED_LABEL | kg_microbe | |
| NiCl2 x 2H2O | REJECTED_LABEL | kg_microbe | |
| NiCl2 x 5 H2O | REJECTED_LABEL | kg_microbe | |
| NiCl2·2H2O | REJECTED_LABEL | kg_microbe | |
| NiCl2・5H2O | REJECTED_LABEL | kg_microbe | |
| nickel(2+) chloride | REJECTED_LABEL | chebi_synonym_review | |
| nickel(II) chloride | REJECTED_LABEL | chebi_synonym_review |
Chemical properties
- Cas rn
- 7791-20-0
- Data source
- OAK/CHEBI xref
- Retrieval date
- 2026-04-19T07:35:12.781730+00:00
- Molecular formula
- Cl2Ni
- Inchi
- InChI=1S/2ClH.Ni/h2*1H;/q;;+2/p-2
- Smiles
- [Cl][Ni][Cl]
Evidence (1)
DATABASE_MATCH
via CultureMech
Imported from CultureMech pipeline, quality=DIRECT_MATCH
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 |
| 2026-04-05T21:48:45.587450+00:00 | fetch_cas_rn_from_culturebot_csv | ADDED_CAS_RN | MAPPED | Added CAS-RN:7791-20-0 from CultureBotHT compounds_to_cas.csv (matched: NiCl2·6H2O) |
| 2026-04-05T23:46:46.255137+00:00 | fetch_cas_rn_with_preprocessing | ADDED_CAS_RN | MAPPED | Added CAS-RN:7718-54-9 from PubChem API (ontology label) via name preprocessing (NiCl2 x 6 H2O (0.1% w/v)) |
| 2026-04-09T00:32:50.689620+00:00 | enrich_mim_cas_rn_batch | CAS_RN_ADDED | MAPPED | Added CAS-RN 7791-20-0 from CultureBotHT/compounds_to_cas.csv |
| 2026-04-18T00:00:00+00:00 | cbclaw_kg_microbe_sweep LLM | ADDED_SYNONYMS | MAPPED | Added 16 synonyms from kg-microbe P4.4 enrichment: NiCl2 . 6H2O, NiCl2 x 2 H2O, NiCl2 x 2H2O, NiCl2 x 5 H2O, NiCl2 x 6 H2O (0.1% w/v), ... (11 more) |
| 2026-04-18T00:00:00+00:00 | cbclaw_kg_microbe_sweep LLM | ADDED_SYNONYMS | MAPPED | Added 16 synonyms from kg-microbe P4.4 enrichment: NiCl2 . 6H2O, NiCl2 x 2 H2O, NiCl2 x 2H2O, NiCl2 x 5 H2O, NiCl2 x 6 H2O, ... (11 more) |
| 2026-04-19T06:30:07.230267+00:00 | audit_p44_hydration_routing | ADDED_SYNONYMS_VIA_HYDRATION_ROUTING | MAPPED | Added 2 synonyms re-routed from anhydrous/hydrate sibling records (Nicl26h2o.yaml): NiCl2 ∙ 6 H2O, NiCl2∙6H2O |
| 2026-04-19T06:30:07.230267+00:00 | audit_p44_hydration_routing | ADDED_SYNONYMS_VIA_HYDRATION_ROUTING | MAPPED | Added 2 synonyms re-routed from anhydrous/hydrate sibling records (Nicl2_X_6_H2o.yaml): NiCl2 ∙ 6 H2O, NiCl2∙6H2O |
| 2026-04-19T07:35:12.782058+00:00 | audit_mim_merge | MERGED_FROM_DUPLICATES | MAPPED | Absorbed 2 duplicate MIM record(s) into this one: Nicl26h2o.yaml, Nicl2_X_6_H2o_01_Wv.yaml. Synonyms, curation_history, and occurrence counts were unioned/summed; winner selected by highest occurrence count with preferred_term readability tie-break. |
| 2026-04-19T07:35:12.781730+00:00 | audit_resolve_risky_cas_rn | RESOLVED_CAS_RN_CONFLICT | MAPPED | CAS-RN conflict across merged group (7718-54-9|7791-20-0) resolved via OAK canonical xref: 7718-54-9 (match) |
| 2026-05-01T07:35:35.539923+00:00 | auto_classify_ingredient_type | AUTO_CLASSIFY_INGREDIENT_TYPE | set ingredient_type=SINGLE_INGREDIENT (CHEBI primary) | |
| 2026-05-01T08:08:31.638188+00:00 | auto_classify_ingredient_type | AUTO_BACKFILL_CHEBI_CHEMISTRY | molecular_formula=Cl2Ni; inchi=InChI=1S/2ClH.Ni/h2*1H;/q;;+2/p-2; smiles=[Cl][Ni][Cl] | |
| 2026-05-02T03:12:17.418481+00:00 | auto_classify_ingredient_type | AUTO_CLASSIFY_INGREDIENT_TYPE | set ingredient_type=SINGLE_INGREDIENT (chemical structure populated (molecular_formula)) | |
| 2026-05-29T23:35:36.112463+00:00 | extract_roles_from_synonyms | ANNOTATED | Added media role: MINERAL (confidence: 1.00) | |
| 2026-06-09T05:23:46.812823+00:00 | correct_stale_ontology_labels.py | CORRECTED | ontology_label 'NiCl2 x 6 H2O' -> 'nickel dichloride': synced to canonical CHEBI label (preferred_term 'NiCl2 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.TRACE_ELEMENT | |
| 2026-08-13T00:00:00+00:00 | fix_hydrate_collapse | MERGED_INTO | Merged into CHEBI:53542 'Nickel (II) chloride hexahydrate'; occurrences transferred. Tombstoned REJECTED, SSSOM rows dropped (#321/#334). | |
| 2026-08-15T00:00:00+00:00 | fix_tombstone_pointers | REFRESHED_TOMBSTONE_ONTOLOGY_ID | ontology_id CHEBI:34887 -> CHEBI:53542 (#360). The merge set identifier and status but left ontology_mapping untouched, so this tombstone kept advertising a term it no longer asserts — anything indexing by ontology_id routed through it. Now agrees with the merge target 'Nickel (II) chloride hexahydrate'. Provenance is unaffected: what the record used to assert is in this history. | |
| 2026-08-29T03:56:37.918985+00:00 | hydrate_duplicate_merges | CORRECTED | cas_rn 7718-54-9 -> 7791-20-0. 7718-54-9 is the ANHYDROUS parent's CAS; 7791-20-0 is the dbxref on CHEBI:53542 nickel chloride hexahydrate, which this record is grounded to. A hydrate and its anhydrous parent are different substances with different formula weights (#334). | |
| 2026-09-09T00:00:00+00:00 | fix_kg_microbe_node_id_drift | CORRECTED | kg_microbe_node_id CHEBI:34887 -> CHEBI:53542 (#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. | |
| 2026-09-22T20:41:14.285965+00:00 | claude LLM | REJECTED_PARENT_NAME_SYNONYMS | Retyped names of the parent compound or of a different hydrate as provenance-only REJECTED_LABEL, because this record is a distinct salt, hydrate or tombstone form and the label index resolved the parent's name here (#232): 'NiCl2 x 2 H2O'; 'NiCl2 x 2H2O'; 'NiCl2 x 5 H2O'; 'NiCl2·2H2O'; 'NiCl2・5H2O'; 'nickel(2+) chloride'; 'nickel(II) chloride'. Preserved original text and source metadata. No identity, mapping, role, or remaining-synonym claim was adjudicated. |