{"hq_id":"hq-c-ino-000014","name":"Hydrogen sulfide","context":"human_adult","timestamp":"2026-10-27T20:25:07.016Z","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-ino-000014","sha256":"86d9065e3e66ace3bc3348440fdc24d8fa313477128f676a68fc7cd9b7142e38"}]},"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":"atsdr_h2s","type":"report","title":"ATSDR Toxicological Profile for Hydrogen Sulfide","year":2006},{"id":"niosh_h2s","type":"regulatory","title":"NIOSH Pocket Guide to Chemical Hazards: Hydrogen Sulfide","year":2019,"url":"https://www.cdc.gov/niosh/npg/npgd0337.html"},{"id":"cdc_h2s_alert","type":"report","title":"CDC/NIOSH Alert: Preventing Occupational Fatalities from Hydrogen Sulfide in Confined Spaces","year":2013},{"id":"r60-2026-09-25-d867-niosh-npg-npgd0337","type":"regulatory","title":"CDC - NIOSH Pocket Guide to Chemical Hazards - Hydrogen sulfide","url":"https://www.cdc.gov/niosh/npg/npgd0337.html"},{"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":"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":"r60-2026-10-03-d928-cellar-02009l0161-20180821","type":"regulatory","title":"Consolidated TEXT: 32009L0161 — EN — 21.08.2018","url":"https://publications.europa.eu/resource/celex/02009L0161-20180821"},{"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-402","type":"database","title":"CAMEO Chemicals, as recorded by PubChem (Experimental Properties, CID 402; where-to-look, not a source of this value)","year":2026,"url":"https://pubchem.ncbi.nlm.nih.gov/rest/pug_view/data/compound/402/JSON?heading=Experimental+Properties"},{"id":"pubchem-exp-hazardous-substances-data-bank-cid-402","type":"database","title":"Hazardous Substances Data Bank (HSDB), as recorded by PubChem (Experimental Properties, CID 402; where-to-look, not a source of this value)","year":2026,"url":"https://pubchem.ncbi.nlm.nih.gov/rest/pug_view/data/compound/402/JSON?heading=Experimental+Properties"},{"id":"pubchem-exp-pac-chemical-database-u-s-department-of--cid-402","type":"database","title":"PAC Chemical Database, U.S. Department of Energy, as recorded by PubChem (Experimental Properties, CID 402; where-to-look, not a source of this value)","year":2026,"url":"https://pubchem.ncbi.nlm.nih.gov/rest/pug_view/data/compound/402/JSON?heading=Experimental+Properties"}],"sources_scope":"context","derived_markers":[],"warnings":["unmapped_classification:NIOSH:idlh 100 ppm","unmapped_classification:OSHA:pel 20 ppm ceiling","unmapped_classification:Canada, as recorded by ToxValDB:eye irritation: serious eye damage/eye irritation ","unmapped_classification:Japan, as recorded by ToxValDB:eye irritation: category 2a (score: high)","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 6.3b (category 3) (score","single_source_warning"],"meta":{"synthesis_version":"1.1.0","config_version":"1.1.0","n_sources":1,"db_version":50,"warnings":["unmapped_classification:NIOSH:idlh 100 ppm","unmapped_classification:OSHA:pel 20 ppm ceiling","unmapped_classification:Canada, as recorded by ToxValDB:eye irritation: serious eye damage/eye irritation ","unmapped_classification:Japan, as recorded by ToxValDB:eye irritation: category 2a (score: high)","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 6.3b (category 3) (score"]},"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_inhalation","human_child","aquatic_life","dog","cat","human_teen","human_elderly","human_infant","human_pregnant","exposure_dermal","exposure_ingestion","exposure_ocular","occupational_exposure"]}