NiCl2

CHEBI:34887 chemically defined MAPPED CHEBI EXACT_MATCH

Ontology mapping

Primary identifier
CHEBI:34887
Ontology label
nickel dichloride
kg-microbe node
CHEBI:34887

Nutritional roles

Synonyms (9)

SynonymTypeSourceOccurrences
Nickel chloride EXACT manual
nickel chloride EXACT manual
Nickel(II) chloride EXACT manual
nickel(II) chloride EXACT manual
nickel dichloride EXACT manual
Role: Mineral source; Properties: Inorganic compound, Defined component, Simple component RAW_TEXT CultureMech
[NiCl2] EXACT_SYNONYM kg_microbe
nickel(2+) chloride EXACT_SYNONYM chebi_synonym_review
NiCl 2 RAW_TEXT sssom_other_backfill

Rejected enrichment labels (20)

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

Rejected labelDispositionSourceOccurrences
NiCl2 ∙ 6 H2O REJECTED_LABEL kg_microbe
NiCl2∙6H2O REJECTED_LABEL kg_microbe
NiCl2 x H2O REJECTED_LABEL merged_from_duplicate_mim_record
NiCl2 . 6H2O REJECTED_LABEL kg_microbe
NiCl2 x 2 H2O REJECTED_LABEL kg_microbe
NiCl2 x 2H2O REJECTED_LABEL kg_microbe
NiCl2 x 5 H2O REJECTED_LABEL kg_microbe
NiCl2 x 6 H2O REJECTED_LABEL kg_microbe
NiCl2 x 6 H2O (0.1% w/v) REJECTED_LABEL kg_microbe
NiCl2 x 6H2O REJECTED_LABEL kg_microbe
NiCl2 · 6H2O REJECTED_LABEL kg_microbe
NiCl2.6H2O REJECTED_LABEL kg_microbe
NiCl2x6H2O REJECTED_LABEL kg_microbe
NiCl2·2H2O REJECTED_LABEL kg_microbe
NiCl2·6H2O REJECTED_LABEL kg_microbe
NiCl2⋅6H2O REJECTED_LABEL kg_microbe
NiCl2・5H2O REJECTED_LABEL kg_microbe
NiCl2・6H2O REJECTED_LABEL kg_microbe
NiCl2・H2O REJECTED_LABEL kg_microbe
NiCl 2 x 6 H2O REJECTED_LABEL sssom_other_backfill

Chemical properties

Cas rn
7718-54-9
Data source
PubChem API
Retrieval date
2026-04-05T19:53:33.699437+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
440
Distinct media
440

Curation history

TimestampCuratorActionNew statusChanges
2026-03-09T06:54:18.022301+00:00 import_from_culturemech IMPORTED MAPPED Initial import from CultureMech pipeline
2026-04-05T19:53:33.699487+00:00 fetch_cas_rn_from_pubchem ADDED_CAS_RN MAPPED Added CAS-RN:7718-54-9 from PubChem API via name lookup (NiCl2)
2026-04-09T00:32:50.689620+00:00 enrich_mim_cas_rn_batch CAS_RN_ADDED MAPPED Added CAS-RN 7718-54-9 from PubChem (via CHEBI:34887)
2026-04-18T00:00:00+00:00 cbclaw_kg_microbe_sweep LLM ADDED_SYNONYMS MAPPED Added 3 synonyms from kg-microbe P4.4 enrichment: NiCl2 ∙ 6 H2O, NiCl2∙6H2O, [NiCl2]
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)
2026-04-19T07:39:23.955331+00:00 audit_mim_merge MERGED_FROM_DUPLICATES MAPPED Absorbed 1 duplicate MIM record(s) into this one: Nicl2_X_H2o.yaml. Synonyms, curation_history, and occurrence counts were unioned/summed; winner selected by highest occurrence count with preferred_term readability tie-break.
2026-05-01T07:35:35.520478+00:00 auto_classify_ingredient_type AUTO_CLASSIFY_INGREDIENT_TYPE set ingredient_type=SINGLE_INGREDIENT (CHEBI primary)
2026-05-01T08:08:31.617314+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]
2026-05-02T03:12:17.395756+00:00 auto_classify_ingredient_type AUTO_CLASSIFY_INGREDIENT_TYPE set ingredient_type=SINGLE_INGREDIENT (chemical structure populated (molecular_formula))
2026-05-29T23:35:36.112452+00:00 extract_roles_from_synonyms ANNOTATED Added media role: MINERAL (confidence: 1.00)
2026-06-09T05:23:46.812547+00:00 correct_stale_ontology_labels.py CORRECTED ontology_label 'NiCl2' -> 'nickel dichloride': synced to canonical CHEBI label (preferred_term 'NiCl2' 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
2026-08-27T03:16:39.519616+00:00 refresh_occurrence_statistics CORRECTED occurrence_statistics 9/9 -> 440/440 (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]
2026-09-02T17:40:44.716277+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: 'NiCl 2'. Tokens already present on the kg-microbe ontology node were left out as redundant (#520).
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: 'NiCl 2 x 6 H2O'. Tokens already present on the kg-microbe ontology node were left out as redundant (#520).
2026-09-12T00:00:00+00:00 fix_malformed_hydrate_identities REJECTED_MALFORMED_HYDRATE_ALIASES MAPPED Marked malformed hydrate alias(es) as REJECTED_LABEL so they remain on their own #344 local identities only: 'NiCl2 x 5 H2O', 'NiCl2・5H2O'.
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): 'NiCl2 ∙ 6 H2O', 'NiCl2∙6H2O', 'NiCl2 x H2O', 'NiCl2 . 6H2O', 'NiCl2 x 2 H2O', 'NiCl2 x 2H2O', 'NiCl2 x 6 H2O', 'NiCl2 x 6 H2O (0.1% w/v)', 'NiCl2 x 6H2O', 'NiCl2 · 6H2O', 'NiCl2.6H2O', 'NiCl2x6H2O', 'NiCl2·2H2O', 'NiCl2·6H2O', 'NiCl2⋅6H2O', 'NiCl2・6H2O', 'NiCl2・H2O', 'NiCl 2 x 6 H2O'.