{"hq_id":"hq-c-org-000130","name":"2,4-D (2,4-Dichlorophenoxyacetic acid)","context":"human_adult","timestamp":"2026-10-27T18:50:02.694Z","derived_by":{"label":"ALETHEIA-derived","engine":{"commit":"a1c6e861599cc34c5db0318ea1a7ac13a327e074","commit_source":"vercel_env","tree_clean":null},"params":{"sha256":"88ae43137e58ed0cd65588409efefee0d90253da01ef4459bf9ee25f888ec9a0","files":["axes.json","context-specificity.json","regulatory-mappings.json","synthesis-params.json","thresholds.json"]},"clock":{"year":2026},"inputs":[{"id":"hq-c-org-000130","sha256":"a9e62500c49e95f87c9d3d8d53c50c6634c188d51f4524da8fc0e22242545f62"}]},"risk_level":"moderate_to_high","risk_profile":{"magnitude":{"mean":0.407895,"weightedMean":0.407895,"std_dev":0.099688,"confidence_interval_95":[0.3,0.5],"source_positions":[{"source":"IARC","year":2015,"value":0.5,"weight":0.41},{"source":"HQ_DIRECT","year":2026,"value":0.3,"weight":0.35}]},"confidence":{"mean":0.672632,"weightedMean":0.672632,"std_dev":0.159501,"confidence_interval_95":[0.5,0.82],"source_positions":[{"source":"HQ_DIRECT","year":2026,"value":0.5,"weight":0.35},{"source":"IARC","year":2015,"value":0.82,"weight":0.41}]},"recency":{"mean":0.730263,"weightedMean":0.730263,"std_dev":0.24922,"confidence_interval_95":[0.5,1],"source_positions":[{"source":"HQ_DIRECT","year":2026,"value":1,"weight":0.35},{"source":"IARC","year":2015,"value":0.5,"weight":0.41}]},"methodology":{"mean":0.861842,"weightedMean":0.861842,"std_dev":0.149532,"confidence_interval_95":[0.7,1],"source_positions":[{"source":"HQ_DIRECT","year":2026,"value":0.7,"weight":0.35},{"source":"IARC","year":2015,"value":1,"weight":0.41}]},"specificity":{"mean":0.828289,"weightedMean":0.828289,"std_dev":0.084735,"confidence_interval_95":[0.75,0.92],"source_positions":[{"source":"HQ_DIRECT","year":2026,"value":0.92,"weight":0.35},{"source":"IARC","year":2015,"value":0.75,"weight":0.41}]},"consensus":{"exists":false,"strength":0.335413,"disagreement_magnitude":0.319781,"warning":"limited_synthesis"}},"interpretation":{"summary":"Regulatory agencies show substantial disagreement. IARC classifies as higher risk (50th percentile), while HQ_DIRECT concludes lower risk (30th percentile).","confidence_note":"Moderate-quality evidence base.","context_note":null,"warning":"limited_synthesis"},"sources":[{"id":"iarc_113_herbicides","type":"regulatory","title":"IARC Monographs Volume 113: Some Organophosphate Insecticides and Herbicides — 2,4-D Group 2B Classification, NHL Epidemiology, Glyphosate Group 2A, and Agricultural Worker Cohort Studies (2015)","year":2015},{"id":"epa_2_4_d_registration","type":"regulatory","title":"US EPA: 2,4-D Registration Review (2005/2012) — Group D Carcinogenicity Classification, Dietary Residue Tolerances, Lawn Re-Entry Exposure Assessment, and Aquatic Life Risk Assessment","year":2012},{"id":"r60-2026-09-24-d867-ecfr-29cfr1910.1000","type":"regulatory","title":"§ 1910.1000 Air contaminants.","url":"https://www.ecfr.gov/api/versioner/v1/full/2026-09-22/title-29.xml?part=1910&section=1910.1000"},{"id":"r60-2026-09-26-d867-cc1-iarc-list-of-classifications-loc-app","type":"regulatory","title":"IARC Monographs, List of Classifications","year":2026,"url":"https://monographs.iarc.who.int/list-of-classifications"},{"id":"r60-2026-09-28-d449-fr-2017-02477-82FR9523-raw","type":"regulatory","title":"82 FR 9523 (2017-02-07) FR Doc 2017-02477: 2,4-D; Pesticide Tolerances","url":"https://www.federalregister.gov/documents/full_text/text/2017/02/07/2017-02477.txt"},{"id":"r60-2026-10-01-echa-annex-vi-clp-table-atp23-xlsx","type":"regulatory","title":"ECHA Annex VI to CLP: the unofficial Excel table (up to and including the 23rd ATP) (secondary: unofficial by its own statement)","url":"https://echa.europa.eu/documents/10162/17218/annex_vi_clp_table_atp23_en.xlsx/b3816c13-81a3-816d-773a-62e88c4e2700?t=1761727004499"},{"id":"src_pubchem_tox_1486","type":"pubchem","title":"PubChem: Toxicity section (CID 1486)","url":"https://pubchem.ncbi.nlm.nih.gov/rest/pug_view/data/compound/1486/JSON?heading=Toxicity"},{"id":"r60-2026-09-27-d820-osha-annotated-table-z-1","type":"regulatory","title":"Permissible Exposure Limits – OSHA Annotated Table Z-1","url":"https://www.osha.gov/annotated-pels/table-z-1"},{"id":"r60-2026-09-30-d907-f1d6179110","type":"regulatory","title":"Industry Code of Practice on Chemicals Classification and Hazard Communication (DOSH Malaysia)","url":"https://dosh.gov.my/wp-content/uploads/2026/06/ICOP-Chemical-Classification-and-Hazard-Communication-2014.pdf"},{"id":"r60-2026-09-30-d918-oehha-prop65-list-csv-own-url","type":"regulatory","title":"OEHHA Proposition 65 List of Carcinogens or Reproductive Toxicants (CSV, list date 31-Jul-26)","url":"https://oehha.ca.gov/sites/default/files/media/2025-01/p65chemicalslist.csv"},{"id":"pubchem-exp-cameo-chemicals-cid-1486","type":"database","title":"CAMEO Chemicals, as recorded by PubChem (Experimental Properties, CID 1486; where-to-look, not a source of this value)","year":2026,"url":"https://pubchem.ncbi.nlm.nih.gov/rest/pug_view/data/compound/1486/JSON?heading=Experimental+Properties"},{"id":"pubchem-exp-hazardous-substances-data-bank-cid-1486","type":"database","title":"Hazardous Substances Data Bank (HSDB), as recorded by PubChem (Experimental Properties, CID 1486; where-to-look, not a source of this value)","year":2026,"url":"https://pubchem.ncbi.nlm.nih.gov/rest/pug_view/data/compound/1486/JSON?heading=Experimental+Properties"},{"id":"ctx_pred_dtxsid0020442","type":"reference","title":"EPA CompTox CTX API: predicted properties for DTXSID0020442 (2,4-D (2,4-Dichlorophenoxyacetic acid))","url":"https://comptox.epa.gov/ctx-api/chemical/property/predicted/search/by-dtxsid/DTXSID0020442"}],"sources_scope":"context","derived_markers":[],"warnings":["unmapped_classification:EPA CTX / EPA OPP:group d not classifiable as to human carcinogenici","unmapped_classification:US EPA (CompTox genotoxicity summary):epa comptox computed genotoxicity summary: negativ","unmapped_classification:US EPA (CompTox genotoxicity summary):epa comptox computed genotoxicity summary: negativ","unmapped_classification:ECHA (CLP Annex VI):eye irritation: eye dam. 1","unmapped_classification:ECHA (CLP Annex VI):skin sensitization: skin sens. 1","unmapped_classification:Japan, as recorded by ToxValDB:eye irritation: category 2a (score: high)","unmapped_classification:Japan, as recorded by ToxValDB:skin irritation: not classified (score: low)","unmapped_classification:Japan, as recorded by ToxValDB:skin sensitization: not classified (score: low)","unmapped_classification:DOSH Malaysia (ICOP):eye irritation: eye dam. 1","unmapped_classification:DOSH Malaysia (ICOP):skin sensitization: skin sens. 1","unmapped_classification:New Zealand, as recorded by ToxValDB:eye irritation: category 6.4a (category 2a) (score","unmapped_classification:New Zealand, as recorded by ToxValDB:skin irritation: category 6.3a (category 2) (score","unmapped_classification:New Zealand, as recorded by ToxValDB:skin sensitization: category 6.5b (category 1) (sc","limited_synthesis"],"meta":{"synthesis_version":"1.1.0","config_version":"1.1.0","n_sources":2,"db_version":53,"warnings":["unmapped_classification:EPA CTX / EPA OPP:group d not classifiable as to human carcinogenici","unmapped_classification:US EPA (CompTox genotoxicity summary):epa comptox computed genotoxicity summary: negativ","unmapped_classification:US EPA (CompTox genotoxicity summary):epa comptox computed genotoxicity summary: negativ","unmapped_classification:ECHA (CLP Annex VI):eye irritation: eye dam. 1","unmapped_classification:ECHA (CLP Annex VI):skin sensitization: skin sens. 1","unmapped_classification:Japan, as recorded by ToxValDB:eye irritation: category 2a (score: high)","unmapped_classification:Japan, as recorded by ToxValDB:skin irritation: not classified (score: low)","unmapped_classification:Japan, as recorded by ToxValDB:skin sensitization: not classified (score: low)","unmapped_classification:DOSH Malaysia (ICOP):eye irritation: eye dam. 1","unmapped_classification:DOSH Malaysia (ICOP):skin sensitization: skin sens. 1","unmapped_classification:New Zealand, as recorded by ToxValDB:eye irritation: category 6.4a (category 2a) (score","unmapped_classification:New Zealand, as recorded by ToxValDB:skin irritation: category 6.3a (category 2) (score","unmapped_classification:New Zealand, as recorded by ToxValDB:skin sensitization: category 6.5b (category 1) (sc"]},"schema":"synthesis","_notice":"ALETHEIA output is reference data, not professional advice. Not a substitute for primary agency sources or qualified professionals. See https://aletheia.holisticquality.io/disclaimer.","_disclaimer_url":"https://aletheia.holisticquality.io/disclaimer","available_contexts":["human_adult","exposure_dermal","exposure_ingestion","aquatic_life","human_teen","human_elderly","human_pregnant","agricultural_worker","exposure_inhalation","exposure_ocular","occupational_exposure"]}