Consensus flow list

Protactinium-234

fo-0180e5b573fb14ef

Identity

Type
Isotope
CAS
15100-28-4
EC
—
Origin
EF 3.1 hybrid_name_cas_v1
Changes
50 across every transformer

Structure

Structure diagram for Protactinium-234

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 0.0007643166780743782
Has element chemrof:has_element {'@id': 'https://vocab.brightway.dev/flow-objects/fo-51208fec587aa216'}
InChI2D key string chemrof:inchi2d_key_string XLROVYAPLOFLNU-AKLPVKDBSA-N
InChI2D string chemrof:inchi2d_string InChI=1S/Pa/i1+3
Isomeric SMILES string chemrof:isomeric_smiles_string [234Pa]
Isotope isotope {"nuclide":"234Pa","mass_number":234,"atomic_mass_and_uncertainty_u":"234.043305555 ± 0.000004395","half_life_and_uncertainty":"6.70 h ± 0.05","decay_modes":"β-=100%","discovery_year":"1913","specific_activity_bq_per_g":"7.3943982256178e+16","specific_activity_bq_per_g_value":7.3943982256178e+16,"half_life_chemlin":"6.70(5) h","chemlin_url":"https://www.chemlin.org/isotope/protactinium-234","isomer_resolution":{"wanted_nuclide":"Pa-234","expected_half_life_days":0.2791666666666667,"attempted_slugs":["234"],"attempted_urls":["https://www.chemlin.org/isotope/protactinium-234"],"strategy":"half_life_agrees_with_pubchem","selected_slug":"protactinium-234","selected_half_life":"6.70(5) h","selected_half_life_days":0.2791666666666667,"half_life_ratio_to_pubchem":1.0,"alternates":[]},"symbol":"Pa","isomeric_state":"","metastable":false}
Isotope lookup isotope_lookup {"is_kbq_candidate":true,"matched":true,"matched_on":"Protactinium-234","claimed_nuclide":"Pa-234","resolved_nuclide":"Pa-234","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":0.2791666666666667,"chemlin_days":0.2791666666666667,"ratio":1.0}}],"reason":"","source":"pubchem_pug_view_annotation_heading","sources":["pubchem_pug_view_annotation_heading","https://www.chemlin.org"],"isomer_resolution":{"wanted_nuclide":"Pa-234","expected_half_life_days":0.2791666666666667,"attempted_slugs":["234"],"attempted_urls":["https://www.chemlin.org/isotope/protactinium-234"],"strategy":"half_life_agrees_with_pubchem","selected_slug":"protactinium-234","selected_half_life":"6.70(5) h","selected_half_life_days":0.2791666666666667,"half_life_ratio_to_pubchem":1.0,"alternates":[]}}
IUPAC name chemrof:IUPAC_name protactinium-234
Molecular formula chemrof:molecular_formula Pa
Molecular mass chemrof:molecular_mass 234.043
Monoisotopic mass chemrof:monoisotopic_mass 234.043308
Nucleon number chemrof:nucleon_number 234
Relationships relationships {"parent_element_flow_object_id":"fo-51208fec587aa216","relationship_type":"isotope_of"}
SMILES string chemrof:smiles_string [Pa]
Symbol chemrof:symbol Pa

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=15100-28-4 enrich_references.consensus_cas_link
ChemLin https://www.chemlin.org —
ChemLin https://www.chemlin.org/isotope/protactinium-234 —
comptox.epa.gov https://comptox.epa.gov/dashboard/DTXSID90934148 enrich_references.pubchem_identifier_url
PubChem https://pubchem.ncbi.nlm.nih.gov/compound/114695 enrich_references.pubchem_compound
PubChem https://pubchem.ncbi.nlm.nih.gov/element/91 —
PubChem https://pubchem.ncbi.nlm.nih.gov/rest/pug_view/data/element/91/JSON —
wikidata.org https://www.wikidata.org/wiki/Q82910003 enrich_references.pubchem_identifier_url

Elementary flows

14
Flow Context Source Unit CFs
3e4c6611-6556-11dd-ad8b-0800200c9a66 Environmental → Air → Aircraft cruise height EF 3.1 kBq 0
08a91e70-3ddc-11dd-98a7-0050c2490048 Environmental → Air → Ground level → Urban (>1000 people/square mile) EF 3.1 kBq 0
08a91e70-3ddc-11dd-98a6-0050c2490048 Environmental → Air → Long-term EF 3.1 kBq 0
08a91e70-3ddc-11dd-98a8-0050c2490048 Environmental → Air → Medium stack, <150 meters → Rural (<1000 people/square mile) EF 3.1 kBq 0
08a91e70-3ddc-11dd-98a5-0050c2490048 Environmental → Air → Unknown EF 3.1 kBq 0
3e4c6610-6556-11dd-ad8b-0800200c9a66 Environmental → Ground → Agricultural EF 3.1 kBq 0
3e4c6612-6556-11dd-ad8b-0800200c9a66 Environmental → Ground → Non-agricultural EF 3.1 kBq 0
3e4c6614-6556-11dd-ad8b-0800200c9a66 Environmental → Ground → Unknown EF 3.1 kBq 0
fe0acd60-3ddc-11dd-ab77-0050c2490048 Environmental → Water → Long-term EF 3.1 kBq 0
3e4c6613-6556-11dd-ad8b-0800200c9a66 Environmental → Water → Ocean EF 3.1 kBq 0
ad48306f60e084371ac24e8e434e6fc0308ce609 Environmental → Water → River bafu algorithm addition Bq 0
fe0acd60-3ddc-11dd-ab76-0050c2490048 Environmental → Water → Surface water EF 3.1 kBq 0
d8d6a3b2c86cebb3a98f99d97d23f812cc8255e1 Environmental → Water → Unconfined aquifer ecoinvent algorithm addition kBq 0
fe0acd60-3ddc-11dd-ab78-0050c2490048 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-0180e5b573fb14ef",
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      "@language": "en",
      "@lang": "en",
      "provenance": {
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        ],
        "prov:wasDerivedFrom": "legacy name field"
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  "altLabel": [],
  "properties": {
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      },
      "rdfs:label": "Molecular formula",
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    },
    "https://w3id.org/chemrof/inchi2d_key_string": {
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      "state_resolution": {
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        "selected_state": "",
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    "relationships": {
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      "relationship_type": "isotope_of"
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    "isotope": {
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      "mass_number": 234,
      "atomic_mass_and_uncertainty_u": "234.043305555 ± 0.000004395",
      "half_life_and_uncertainty": "6.70 h ± 0.05",
      "decay_modes": "β-=100%",
      "discovery_year": "1913",
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      "specific_activity_bq_per_g_value": 7.3943982256178e+16,
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      "symbol": "Pa",
      "isomeric_state": "",
      "metastable": false
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    "seed_uuid": "08a91e70-3ddc-11dd-98a5-0050c2490048",
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  "origin_qualifier": null,
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  "@type": [
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}

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