Consensus flow list

Technetium-99

fo-08dd0687c6c0771b

Identity

Type
Isotope
CAS
14133-76-7
EC
—
Origin
EF 3.1 hybrid_name_cas_v1
Changes
51 across every transformer

Structure

Structure diagram for Technetium-99

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

Alternative labels

3

Properties

PropertyValue
Decay mode chemrof:decay_mode β-=100%
Elemental charge chemrof:elemental_charge 0
Half life chemrof:half_life 211100.0
Has element chemrof:has_element {'@id': 'https://vocab.brightway.dev/flow-objects/fo-dc268fb4a63f197d'}
InChI2D key string chemrof:inchi2d_key_string GKLVYJBZJHMRIY-OUBTZVSYSA-N
InChI2D string chemrof:inchi2d_string InChI=1S/Tc/i1+1
Isomeric SMILES string chemrof:isomeric_smiles_string [99Tc]
Isotope isotope {"nuclide":"99Tc","mass_number":99,"atomic_mass_and_uncertainty_u":"98.906249681 ± 0.000000974","half_life_and_uncertainty":"211.1 ky ± 1.2","decay_modes":"β-=100%","discovery_year":"1938","specific_activity_bq_per_g":"632755093.90099","specific_activity_bq_per_g_value":632755093.90099,"half_life_chemlin":"2.115(12)e5 years (DDEP-2025 [04])","chemlin_url":"https://www.chemlin.org/isotope/technetium-99","isomer_resolution":{"wanted_nuclide":"Tc-99","expected_half_life_days":77104275.0,"attempted_slugs":["99"],"attempted_urls":["https://www.chemlin.org/isotope/technetium-99"],"strategy":"half_life_agrees_with_pubchem","selected_slug":"technetium-99","selected_half_life":"2.115(12)e5 years (DDEP-2025 [04])","selected_half_life_days":77250375.00000001,"half_life_ratio_to_pubchem":1.001894836570346,"alternates":[]},"symbol":"Tc","isomeric_state":"","metastable":false}
Isotope lookup isotope_lookup {"is_kbq_candidate":true,"matched":true,"matched_on":"Technetium-99","claimed_nuclide":"Tc-99","resolved_nuclide":"Tc-99","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":77104275.0,"chemlin_days":77250375.00000001,"ratio":1.001894836570346}}],"reason":"","source":"pubchem_pug_view_annotation_heading","sources":["pubchem_pug_view_annotation_heading","https://www.chemlin.org"],"isomer_resolution":{"wanted_nuclide":"Tc-99","expected_half_life_days":77104275.0,"attempted_slugs":["99"],"attempted_urls":["https://www.chemlin.org/isotope/technetium-99"],"strategy":"half_life_agrees_with_pubchem","selected_slug":"technetium-99","selected_half_life":"2.115(12)e5 years (DDEP-2025 [04])","selected_half_life_days":77250375.00000001,"half_life_ratio_to_pubchem":1.001894836570346,"alternates":[]}}
IUPAC name chemrof:IUPAC_name technetium-99
Molecular formula chemrof:molecular_formula Tc, [99Tc]
Molecular mass chemrof:molecular_mass 98.906
Monoisotopic mass chemrof:monoisotopic_mass 98.90625, 98.906255
Nucleon number chemrof:nucleon_number 99
Relationships relationships {"parent_element_flow_object_id":"fo-dc268fb4a63f197d","relationship_type":"isotope_of"}
SMILES string chemrof:smiles_string [Tc]
Symbol chemrof:symbol Tc

Known URLs

16

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=14133-76-7 enrich_references.chebi_xrefs
ChEBI https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:33371 enrich_references.chebi_id_link
ChemLin https://www.chemlin.org —
ChemLin https://www.chemlin.org/isotope/technetium-99 —
comptox.epa.gov https://comptox.epa.gov/dashboard/DTXSID00874006 enrich_references.pubchem_identifier_url
drugbank.ca https://www.drugbank.ca/drugs/DB00113 enrich_references.pubchem_identifier_url
drugbank.ca https://www.drugbank.ca/drugs/DB14227 enrich_references.pubchem_identifier_url
gmelin gmelin:41657 enrich_references.chebi_xrefs
gsrs.ncats.nih.gov https://gsrs.ncats.nih.gov/ginas/app/beta/substances/6EW75241VU enrich_references.pubchem_identifier_url
jglobal.jst.go.jp http://jglobal.jst.go.jp/en/redirect?Nikkaji_No=J1.565.744H enrich_references.pubchem_identifier_url
ncithesaurus.nci.nih.gov https://ncithesaurus.nci.nih.gov/ncitbrowser/ConceptReport.jsp?dictionary=NCI_Thesaurus&ns=ncit&code=C1642 enrich_references.pubchem_identifier_url
ncithesaurus.nci.nih.gov https://ncithesaurus.nci.nih.gov/ncitbrowser/ConceptReport.jsp?dictionary=NCI_Thesaurus&ns=ncit&code=C219324 enrich_references.pubchem_identifier_url
PubChem https://pubchem.ncbi.nlm.nih.gov/compound/26476 enrich_references.pubchem_compound
PubChem https://pubchem.ncbi.nlm.nih.gov/element/43 —
PubChem https://pubchem.ncbi.nlm.nih.gov/rest/pug_view/data/element/43/JSON —
wikidata.org https://www.wikidata.org/wiki/Q1961418 enrich_references.pubchem_identifier_url

Elementary flows

13
Flow Context Source Unit CFs
32cc372c-6556-11dd-ad8b-0800200c9a66 Environmental → Air → Aircraft cruise height EF 3.1 kBq 0
32cc3731-6556-11dd-ad8b-0800200c9a66 Environmental → Air → Ground level → Urban (>1000 people/square mile) EF 3.1 kBq 0
32cc372b-6556-11dd-ad8b-0800200c9a66 Environmental → Air → Long-term EF 3.1 kBq 0
32cc372e-6556-11dd-ad8b-0800200c9a66 Environmental → Air → Medium stack, <150 meters → Rural (<1000 people/square mile) EF 3.1 kBq 0
32cc372a-6556-11dd-ad8b-0800200c9a66 Environmental → Air → Unknown EF 3.1 kBq 0
32cc3729-6556-11dd-ad8b-0800200c9a66 Environmental → Ground → Agricultural EF 3.1 kBq 0
32cc372d-6556-11dd-ad8b-0800200c9a66 Environmental → Ground → Non-agricultural EF 3.1 kBq 0
32cc3730-6556-11dd-ad8b-0800200c9a66 Environmental → Ground → Unknown EF 3.1 kBq 0
08a91e70-3ddc-11dd-9946-0050c2490048 Environmental → Water → Long-term EF 3.1 kBq 0
32cc372f-6556-11dd-ad8b-0800200c9a66 Environmental → Water → Ocean EF 3.1 kBq 0
08a91e70-3ddc-11dd-9945-0050c2490048 Environmental → Water → Surface water EF 3.1 kBq 0
070a023ca5a68889395bdcbb4c55d7cf3389d13f Environmental → Water → Unconfined aquifer ecoinvent algorithm addition kBq 0
08a91e70-3ddc-11dd-9947-0050c2490048 Environmental → Water → Unknown EF 3.1 kBq 0

History

Everything that changed this substance (51 changes)

Open the changes page

Full record

Flow object JSON 
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