Consensus flow list

Lanthanum-140

fo-c0c03590afa310ce

Identity

Type
Isotope
CAS
13981-28-7
EC
—
Origin
EF 3.1 hybrid_name_cas_v1
Changes
50 across every transformer

Structure

Structure diagram for Lanthanum-140

This substance carries 2 candidate structures; the diagram is the first one RDKit could parse, not a settled answer.

Properties

PropertyValue
Decay mode chemrof:decay_mode β-=100%
Half life chemrof:half_life 0.004596052931781885
Has element chemrof:has_element {'@id': 'https://vocab.brightway.dev/flow-objects/fo-d01f3205fb513fb9'}
InChI2D key string chemrof:inchi2d_key_string FZLIPJUXYLNCLC-OUBTZVSYSA-N
InChI2D string chemrof:inchi2d_string InChI=1S/La/i1+1
Isomeric SMILES string chemrof:isomeric_smiles_string [140La]
Isotope isotope {"nuclide":"140La","mass_number":140,"atomic_mass_and_uncertainty_u":"139.909487285 ± 0.000000651","half_life_and_uncertainty":"40.289 h ± 0.004","decay_modes":"β-=100%","discovery_year":"1935","specific_activity_bq_per_g":"2.0571853567102e+16","specific_activity_bq_per_g_value":2.0571853567102e+16,"half_life_chemlin":"1.67858(21) d","chemlin_url":"https://www.chemlin.org/isotope/lanthanum-140","isomer_resolution":{"wanted_nuclide":"La-140","expected_half_life_days":1.6787083333333332,"attempted_slugs":["140"],"attempted_urls":["https://www.chemlin.org/isotope/lanthanum-140"],"strategy":"half_life_agrees_with_pubchem","selected_slug":"lanthanum-140","selected_half_life":"1.67858(21) d","selected_half_life_days":1.67858,"half_life_ratio_to_pubchem":0.9999235523343841,"alternates":[]},"symbol":"La","isomeric_state":"","metastable":false}
Isotope lookup isotope_lookup {"is_kbq_candidate":true,"matched":true,"matched_on":"Lanthanum-140","claimed_nuclide":"La-140","resolved_nuclide":"La-140","state_resolution":{"claimed_state":"","selected_state":"","strategy":"state_taken_as_written","candidates":[]},"checks":[{"check":"ground_state_does_not_decay_by_isomeric_transition","passed":true,"detail":"β-=100%"},{"check":"half_life_sources_agree","passed":true,"detail":{"pubchem_days":1.6787083333333332,"chemlin_days":1.67858,"ratio":1.0000764535103084}}],"reason":"","source":"pubchem_pug_view_annotation_heading","sources":["pubchem_pug_view_annotation_heading","https://www.chemlin.org"],"isomer_resolution":{"wanted_nuclide":"La-140","expected_half_life_days":1.6787083333333332,"attempted_slugs":["140"],"attempted_urls":["https://www.chemlin.org/isotope/lanthanum-140"],"strategy":"half_life_agrees_with_pubchem","selected_slug":"lanthanum-140","selected_half_life":"1.67858(21) d","selected_half_life_days":1.67858,"half_life_ratio_to_pubchem":0.9999235523343841,"alternates":[]}}
IUPAC name chemrof:IUPAC_name lanthanum-140
Molecular formula chemrof:molecular_formula La
Molecular mass chemrof:molecular_mass 139.909
Monoisotopic mass chemrof:monoisotopic_mass 139.909478
Nucleon number chemrof:nucleon_number 140
Relationships relationships {"parent_element_flow_object_id":"fo-d01f3205fb513fb9","relationship_type":"isotope_of"}
SMILES string chemrof:smiles_string [La]
Symbol chemrof:symbol La

Known URLs

8

Where else this substance is described. Collected while the pipeline resolved it — from ChEBI's cross-references, from PubChem's identifier list, and from the CAS number — so a link here is a record the merge actually read, not a search it suggests.

Resource URL Recorded by
CAS Common Chemistry https://commonchemistry.cas.org/detail?cas_rn=13981-28-7 enrich_references.consensus_cas_link
ChemLin https://www.chemlin.org —
ChemLin https://www.chemlin.org/isotope/lanthanum-140 —
comptox.epa.gov https://comptox.epa.gov/dashboard/DTXSID70930608 enrich_references.pubchem_identifier_url
PubChem https://pubchem.ncbi.nlm.nih.gov/compound/104882 enrich_references.pubchem_compound
PubChem https://pubchem.ncbi.nlm.nih.gov/element/57 —
PubChem https://pubchem.ncbi.nlm.nih.gov/rest/pug_view/data/element/57/JSON —
wikidata.org https://www.wikidata.org/wiki/Q82906015 enrich_references.pubchem_identifier_url

Elementary flows

14
Flow Context Source Unit CFs
32cc1013-6556-11dd-ad8b-0800200c9a66 Environmental → Air → Aircraft cruise height EF 3.1 kBq 0
32cc1018-6556-11dd-ad8b-0800200c9a66 Environmental → Air → Ground level → Urban (>1000 people/square mile) EF 3.1 kBq 0
32cc1012-6556-11dd-ad8b-0800200c9a66 Environmental → Air → Long-term EF 3.1 kBq 0
32cc1015-6556-11dd-ad8b-0800200c9a66 Environmental → Air → Medium stack, <150 meters → Rural (<1000 people/square mile) EF 3.1 kBq 0
32cc1011-6556-11dd-ad8b-0800200c9a66 Environmental → Air → Unknown EF 3.1 kBq 0
32cc1010-6556-11dd-ad8b-0800200c9a66 Environmental → Ground → Agricultural EF 3.1 kBq 0
32cc1014-6556-11dd-ad8b-0800200c9a66 Environmental → Ground → Non-agricultural EF 3.1 kBq 0
32cc1017-6556-11dd-ad8b-0800200c9a66 Environmental → Ground → Unknown EF 3.1 kBq 0
fe0acd60-3ddc-11dd-a8e0-0050c2490048 Environmental → Water → Long-term EF 3.1 kBq 0
32cc1016-6556-11dd-ad8b-0800200c9a66 Environmental → Water → Ocean EF 3.1 kBq 0
7509205a338fc8dcee265f5b35c4a352f02cd77c Environmental → Water → River bafu algorithm addition Bq 0
fe0acd60-3ddc-11dd-a8df-0050c2490048 Environmental → Water → Surface water EF 3.1 kBq 0
1bf0ab9d3f099eef1cc0535a851f81cec5971974 Environmental → Water → Unconfined aquifer ecoinvent algorithm addition kBq 0
fe0acd60-3ddc-11dd-a8e1-0050c2490048 Environmental → Water → Unknown EF 3.1 kBq 0

History

Everything that changed this substance (50 changes)

Open the changes page

Full record

Flow object JSON 
{
  "flow_object_id": "fo-c0c03590afa310ce",
  "prefLabel": [
    {
      "@value": "Lanthanum-140",
      "@language": "en",
      "@lang": "en",
      "provenance": {
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        "prov:hadPrimarySource": [
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        "prov:wasDerivedFrom": "legacy name field"
      }
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  "altLabel": [],
  "properties": {
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    },
    "https://w3id.org/chemrof/inchi2d_key_string": {
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      "resolved_nuclide": "La-140",
      "state_resolution": {
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    "relationships": {
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    "isotope": {
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      "mass_number": 140,
      "atomic_mass_and_uncertainty_u": "139.909487285 ± 0.000000651",
      "half_life_and_uncertainty": "40.289 h ± 0.004",
      "decay_modes": "β-=100%",
      "discovery_year": "1935",
      "specific_activity_bq_per_g": "2.0571853567102e+16",
      "specific_activity_bq_per_g_value": 2.0571853567102e+16,
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      "isomer_resolution": {
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      "symbol": "La",
      "isomeric_state": "",
      "metastable": false
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  "origin_qualifier": null,
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  "@type": [
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}

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