Na2EDTA·2H2O

CHEBI:64758 chemically defined MAPPED CHEBI SYNONYM_MATCH

Ontology mapping

Primary identifier
CHEBI:64758
Ontology label
EDTA disodium salt dihydrate

Physicochemical roles

Synonyms (17)

SynonymTypeSourceOccurrences
Properties: Defined component, Organic compound, Simple component RAW_TEXT CultureMech
Properties: Defined component, Simple component, Organic compound RAW_TEXT CultureMech
Properties: Organic compound, Defined component, Simple component RAW_TEXT CultureMech
EDTA disodium dihydrate EXACT_SYNONYM kg_microbe
Na2EDTA . 2H2O HYDRATE_FORM kg_microbe
Na2EDTA · 2H2O HYDRATE_FORM kg_microbe
Na2EDTA.2H2O HYDRATE_FORM kg_microbe
Na2EDTA· 2H2O HYDRATE_FORM kg_microbe
Na2H2EDTA.2H2O HYDRATE_FORM kg_microbe
disodium (ethylenedinitrilo)tetraacetate dihydrate EXACT_SYNONYM kg_microbe
disodium EDTA dihydrate EXACT_SYNONYM kg_microbe
disodium edetate dihydrate EXACT_SYNONYM kg_microbe
ethylenediaminetetraacetic acid disodium salt dihydrate EXACT_SYNONYM kg_microbe
Na2EDTA•2H2O RAW_TEXT CultureMech
Na2EDTA•2H2O(Sigma ED255) RAW_TEXT CultureMech
disodium 2,2',2'',2'''-(ethane-1,2-diyldiammonio)tetraacetate--water (1/2) EXACT_SYNONYM chebi_synonym_review
Na2-EDTA x 2 H2O RAW_TEXT MERGED_FROM_kgmicrobe.compound:na2-edta_x_2_h2o

Chemical properties

Cas rn
6381-92-6
Data source
CHEBI dbxref on CHEBI:64758 (corrected from an EC number, #114)
Retrieval date
2026-04-05T23:45:49.334710+00:00
Molecular formula
C10H14N2O8.2H2O.2Na
Inchi
InChI=1S/C10H16N2O8.2Na.2H2O/c13-7(14)3-11(4-8(15)16)1-2-12(5-9(17)18)6-10(19)20;;;;/h1-6H2,(H,13,14)(H,15,16)(H,17,18)(H,19,20);;;2*1H2/q;2*+1;;/p-2
Smiles
O.O.O=C([O-])C[NH+](CC[NH+](CC(=O)[O-])CC(=O)[O-])CC(=O)[O-].[Na+].[Na+]

Evidence (1)

DATABASE_MATCH via CultureMech

Imported from CultureMech pipeline, quality=DIRECT_MATCH

Occurrence statistics

Total occurrences
140
Distinct media
139

Curation history

TimestampCuratorActionNew statusChanges
2026-03-09T06:54:18.022301+00:00 import_from_culturemech IMPORTED MAPPED Initial import from CultureMech pipeline
2026-04-05T23:45:49.334720+00:00 fetch_cas_rn_with_preprocessing ADDED_CAS_RN MAPPED Added CAS-RN:205-358-3 from PubChem API (ontology label) via name preprocessing (Na2EDTA·2H2O)
2026-04-18T00:00:00+00:00 cbclaw_kg_microbe_sweep LLM ADDED_SYNONYMS MAPPED Added 10 synonyms from kg-microbe P4.4 enrichment: EDTA disodium dihydrate, Na2EDTA . 2H2O, Na2EDTA · 2H2O, Na2EDTA.2H2O, Na2EDTA· 2H2O, ... (5 more)
2026-05-01T07:35:35.140953+00:00 auto_classify_ingredient_type AUTO_CLASSIFY_INGREDIENT_TYPE set ingredient_type=SINGLE_INGREDIENT (CHEBI primary)
2026-05-01T08:08:31.206088+00:00 auto_classify_ingredient_type AUTO_BACKFILL_CHEBI_CHEMISTRY molecular_formula=C10H14N2O8.2H2O.2Na; inchi=InChI=1S/C10H16N2O8.2Na.2H2O/c13-7(14)3-11(4-8(15); smiles=O.O.O=C([O-])C[NH+](CC[NH+](CC(=O)[O-])CC(=O)[O-])
2026-05-02T03:12:16.941179+00:00 auto_classify_ingredient_type AUTO_CLASSIFY_INGREDIENT_TYPE set ingredient_type=SINGLE_INGREDIENT (chemical structure populated (molecular_formula))
2026-05-05T00:00:00+00:00 ingredient_mapping_review_2026_05_05 MERGED MAPPED Absorbed duplicate record Na2edta2h2o.yaml (UNMAPPED_0040) into Na2edta2h2o.yaml; source occurrence counts and synonyms were merged. Exact local EDTA disodium salt dihydrate mapping CHEBI:64758.
2026-06-14T06:54:43.190263+00:00 infer_roles_from_chebi_ancestry ANNOTATED Added media role: CHELATOR (confidence: 0.70)
2026-07-20T00:00:00+00:00 migrate_media_roles_to_facets ANNOTATED Migrated legacy media_roles to role facets (#128): CHELATOR -> physicochemical_roles.CHELATOR
2026-08-06T00:00:00+00:00 issue_114_cas_audit LLM CORRECTED cas_rn 205-358-3 -> 6381-92-6. 205-358-3 is an EC/EINECS registry number (format NNN-NNN-N), not a CAS-RN — the same class of fetch_cas_rn_from_pubchem mis-assignment as Beef extract's 103-47-9 (=CHES) in #114. The replacement is this record's own CHEBI term CHEBI:64758's CAS dbxref, and that term's label matches the substance, so it is evidence rather than inference. The EC number is recorded here rather than discarded: it was correct information in the wrong field.
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 'EDTA disodium salt dihydrate'; it matches the ChEBI synonym 'Na2H2EDTA.2H2O' on CHEBI:64758. 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).
2026-08-13T00:00:00+00:00 merge_minted_hydrate_duplicates MERGED_FROM Absorbed 'Na2-EDTA x 2 H2O' (#321), which differs from this record only in notation the merge pass does not recognise as the same substance, so it escaped dedup and was grounded to the anhydrous parent. It had just been minted 'kgmicrobe.compound:na2-edta_x_2_h2o' on the false premise that ChEBI has no term for this hydrate — ChEBI label search for the dihydrate of the minted-off parent. Occurrences 10/10 + 103/64 -> 113/74. Raw label kept as a RAW_TEXT synonym.
2026-08-27T03:16:39.519455+00:00 refresh_occurrence_statistics CORRECTED occurrence_statistics 74/113 -> 139/140 (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]