{"query":{"parameter":"butyl ether","place":"CA-QC","medium":null,"statistic":null,"kind":null},"searched":{"places":["CA-QC","CA"],"parameter_keys":["cas:142-96-1","cas:24072-44-4","cas:111-34-2","cas:112-34-5","cas:628-81-9","cas:637-92-3","cas:4413-13-2","cas:4223-11-4","cas:7795-91-7","cas:17348-59-3","cas:1634-04-4","name:methyl-tert-butyl ether","name:methyl tertiary-butyl ether","cas:2426-08-6","cas:29387-86-8","cas:10215-33-5","cas:57018-52-7","cas:7665-72-7","cas:55934-93-5"],"names_matched":[["butyl ether","cas:142-96-1"],["butyl cyclohexyl ether","cas:24072-44-4"],["butyl vinyl ether","cas:111-34-2"],["diethylene glycol mono butyl ether","cas:112-34-5"],["ethyl n butyl ether","cas:628-81-9"],["ethyl t butyl ether","cas:637-92-3"],["ethyl tert butyl ether","cas:637-92-3"],["ethyl tert butyl ether 2 ethyl 2 ethoxypropane","cas:637-92-3"],["ethyl tertiary butyl ether","cas:637-92-3"],["ethyl tertiary butyl ether etbe","cas:637-92-3"],["ethylene glycol butyl ethyl ether","cas:4413-13-2"],["ethylene glycol butyl vinyl ether","cas:4223-11-4"],["ethylene glycol mono sec butyl ether","cas:7795-91-7"],["isopropyl tert butyl ether","cas:17348-59-3"],["methyl t butyl ether","cas:1634-04-4"],["methyl t butyl ether mtbe","cas:1634-04-4"],["methyl tert butyl ether","cas:1634-04-4"],["methyl tert butyl ether","name:methyl-tert-butyl ether"],["methyl tert butyl ether mtbe","cas:1634-04-4"],["methyl tert butyl ether mtbe","name:methyl-tert-butyl ether"],["methyl tertiary butyl ether","cas:1634-04-4"],["methyl tertiary butyl ether","name:methyl tertiary-butyl ether"],["methyl tertiary butyl ether mtbe","cas:1634-04-4"],["methyl tertiary butyl ether mtbe","name:methyl tertiary-butyl ether"],["methyl tertiary butyl ether total","cas:1634-04-4"],["mtbe methyl tert butyl ether","cas:1634-04-4"],["n butyl glycidyl ether","cas:2426-08-6"],["propylene glycol butyl ether","cas:29387-86-8"],["propylene glycol mono n butyl ether","cas:10215-33-5"],["propylene glycol t butyl ether 1 tert butoxy 2 propanol","cas:57018-52-7"],["tert butyl glycidyl ether","cas:7665-72-7"],["tripropylene glycol n butyl ether","cas:55934-93-5"]],"match":"exact+contains","order":"The place's own instruments first, then each place above it, each in its register's order","not_sent":{"rows":38,"names":["MTBE","Éther de butyle normal et de glycidyle","Butyl cyclohexyl ether","Éther tert-butylique du propylène glycol","Ether de butyle et de vinyle","Ether éthylbutylique","Ethyl tert-butyl ether","Ethylene glycol butyl ethyl ether"],"says":"38 rows share a parameter key with a longer name holding \"butyl ether\" but are printed under names without these words (that key is wider than the name), or keyed to a CAS number \"butyl ether\" does not name (another substance, whatever words its name holds): not sent. Ask for one by its name or CAS number."}},"total":3,"offset":0,"returned":3,"next_offset":null,"rows":[{"id":"6c220882db2f6607","parameter":"Dibutylique, éther","value":"370","value_num":370,"unit":"µg/m³","statistic":"four_minute_avg","direction":"max","kind":"guideline","medium":"ambient_air","level":"regional","parameter_key":"cas:142-96-1","place":["CA-QC"],"conditions":[],"cite":{"instrument":"ca_qc_air","title":"MELCCFP — Normes et critères québécois de qualité de l'atmosphère (version 11)","issuer":null,"edition":"Version 11","source_url":"https://environnement.gouv.qc.ca/air/criteres/normes-criteres-qualite-atmosphere.xlsx","source_sha256":null,"fetched_at":null,"source_status":{"checked":"2026-10-15","status":"not verified"},"section":null,"page":null,"quote":null,"column":"valeur"}},{"id":"d0215c39d6c074f4","parameter":"Dibutylique, éther","value":"0","value_num":0,"unit":"µg/m³","statistic":"four_minute_avg","direction":"max","kind":"printed_reference","medium":"ambient_air","level":"regional","parameter_key":"cas:142-96-1","place":["CA-QC"],"conditions":[],"cite":{"instrument":"ca_qc_air","title":"MELCCFP — Normes et critères québécois de qualité de l'atmosphère (version 11)","issuer":null,"edition":"Version 11","source_url":"https://environnement.gouv.qc.ca/air/criteres/normes-criteres-qualite-atmosphere.xlsx","source_sha256":null,"fetched_at":null,"source_status":{"checked":"2026-10-15","status":"not verified"},"section":null,"page":null,"quote":null,"column":"concentration_initiale"}},{"id":"69d8af1f3d7186a3","parameter":"Methyl tertiary-butyl ether (MTBE)","value":"≤ 0.015","value_num":0.015,"unit":"mg/L","direction":"max","kind":"objective","medium":"drinking_water","level":"national","parameter_key":"name:methyl tertiary-butyl ether","place":["CA"],"conditions":["drinking water (a guideline, not a regulation: each province and territory decides whether, and how, it binds there)"],"cite":{"instrument":"ca_hc_gcdwq","title":"Health Canada — Guidelines for Canadian Drinking Water Quality, Summary Tables 1-3 (microbiological, chemical and physical, radiological)","issuer":"Health Canada, with the Federal-Provincial-Territorial Committee on Drinking Water","edition":"page modified 2026-01-21 (dcterms.modified; issued 2014-10-22): Tables 1-3 as the browser pane rendered them on 2026-10-15","source_url":"https://www.canada.ca/en/health-canada/services/environmental-workplace-health/reports-publications/water-quality/guidelines-canadian-drinking-water-quality-summary-table.html","source_sha256":"9451ad8bfa566c0625ae4fcb362272cbb0e20040c548540f362488118c300b89","fetched_at":"2026-10-15","section":"Table 2, Chemical and Physical Parameters (Methyl tertiary-butyl ether (MTBE), published or reaffirmed 2006)","page":null,"quote":"O Methyl tertiary-butyl ether (MTBE) (2006) None AO: ≤ 0.015"}}],"next":[{"tool":"check_values","says":"Has your user measured this? check_values sets each of their results beside every row held here, with a verdict and the row's cite.","arguments":{"place":"CA-QC"},"needs":{"rows":"Your user's measured results, as their table prints them: [{parameter: \"butyl ether\", value, unit}, ...], any other parameters too."},"post":"/api/v1/check"},{"tool":"read_certificate","says":"Has your user a laboratory certificate? read_certificate reads every row it prints, each with its page, and checks them against these limits.","arguments":{"place":"CA-QC"},"needs":{"content_base64":"The laboratory's certificate (PDF) or its XLSX, XLS or CSV export, as base64; or file_url, a public https address of it."},"post":"/api/v1/certificate"}]}