{"hq_id":"hq-c-org-000639","name":"Para-phenylenediamine (PPD, 1,4-benzenediamine)","context":"human_adult","timestamp":"2026-10-27T20:23:07.881Z","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-000639","sha256":"aa928792ba32cdca6d6104f56d6db5b685f973762c023036e3818b3c46006a40"}]},"risk_level":"high","risk_profile":{"magnitude":{"mean":0.625,"weightedMean":0.625,"std_dev":0,"confidence_interval_95":[0.625,0.625],"source_positions":[{"source":"HQ_DIRECT","year":2026,"value":0.625,"weight":0.35}]},"confidence":{"mean":0.5,"weightedMean":0.5,"std_dev":0,"confidence_interval_95":[0.5,0.5],"source_positions":[{"source":"HQ_DIRECT","year":2026,"value":0.5,"weight":0.35}]},"recency":{"mean":1,"weightedMean":1,"std_dev":0,"confidence_interval_95":[1,1],"source_positions":[{"source":"HQ_DIRECT","year":2026,"value":1,"weight":0.35}]},"methodology":{"mean":0.7,"weightedMean":0.7,"std_dev":0,"confidence_interval_95":[0.7,0.7],"source_positions":[{"source":"HQ_DIRECT","year":2026,"value":0.7,"weight":0.35}]},"specificity":{"mean":0.92,"weightedMean":0.92,"std_dev":0,"confidence_interval_95":[0.92,0.92],"source_positions":[{"source":"HQ_DIRECT","year":2026,"value":0.92,"weight":0.35}]},"consensus":{"exists":false,"strength":0,"disagreement_magnitude":0,"warning":"single_source_warning"}},"interpretation":{"summary":"Single source (HQ_DIRECT, 2026) indicates high risk.","confidence_note":"Evidence quality varies; interpretation requires caution.","context_note":null,"warning":"single_source_warning"},"sources":[{"id":"src_001","type":"database","title":"PubChem Compound CID 7814","url":"https://pubchem.ncbi.nlm.nih.gov/compound/7814"},{"id":"src_002","type":"epa","title":"EPA CompTox Chemicals Dashboard — DTXSID9021138","url":"https://comptox.epa.gov/dashboard/chemical/details/DTXSID9021138"},{"id":"src_003","type":"reference","title":"ATSDR Toxicological Profile — CAS 106-50-3","url":"https://www.atsdr.cdc.gov/toxprofiledocs/index.html"},{"id":"r60-2026-09-25-d897-niosh-npg-npgd0495","type":"regulatory","title":"CDC - NIOSH Pocket Guide to Chemical Hazards - p-Phenylene diamine","url":"https://www.cdc.gov/niosh/npg/npgd0495.html"},{"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":"r60-2026-09-24-d869-iarc-monographs-available","type":"regulatory","title":"IARC Monographs — Monographs available (index)","year":2026,"url":"https://monographs.iarc.who.int/monographs-available/"},{"id":"echa-chem-reach-registrations","type":"regulatory","title":"ECHA CHEM, Download all substances: REACH registrations (ECHA's own list of REACH-registered substances)","year":2026,"url":"https://chem.echa.europa.eu/"},{"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-ilo-who-international-chemical-safety-ca-cid-7814","type":"database","title":"ILO-WHO International Chemical Safety Cards (ICSCs), as recorded by PubChem (Experimental Properties, CID 7814; where-to-look, not a source of this value)","year":2026,"url":"https://pubchem.ncbi.nlm.nih.gov/rest/pug_view/data/compound/7814/JSON?heading=Experimental+Properties"},{"id":"ctx_pred_dtxsid9021138","type":"reference","title":"EPA CompTox CTX API: predicted properties for DTXSID9021138 (Para-phenylenediamine (PPD, 1,4-benzenediamine))","url":"https://comptox.epa.gov/ctx-api/chemical/property/predicted/search/by-dtxsid/DTXSID9021138"},{"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)","url":"https://echa.europa.eu/documents/10162/17218/annex_vi_clp_table_atp23_en.xlsx/b3816c13-81a3-816d-773a-62e88c4e2700?t=1761727004499"}],"sources_scope":"context","derived_markers":[],"warnings":["unmapped_classification:EPA CTX / IARC:group 3 - not classifiable as to its carcinogenici","unmapped_classification:US EPA (CompTox genotoxicity summary):epa comptox computed genotoxicity summary: positiv","unmapped_classification:US EPA (CompTox genotoxicity summary):epa comptox computed genotoxicity summary: positiv","single_source_warning"],"meta":{"synthesis_version":"1.1.0","config_version":"1.1.0","n_sources":1,"db_version":47,"warnings":["unmapped_classification:EPA CTX / IARC:group 3 - not classifiable as to its carcinogenici","unmapped_classification:US EPA (CompTox genotoxicity summary):epa comptox computed genotoxicity summary: positiv","unmapped_classification:US EPA (CompTox genotoxicity summary):epa comptox computed genotoxicity summary: positiv"]},"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":["aquatic_life","cat","dog","exposure_dermal","exposure_ingestion","exposure_inhalation","exposure_ocular","human_adult","human_child","human_teen","human_elderly","human_infant","human_pregnant","occupational_exposure"]}