{"id":"S89001749","label":"Perchloric acid","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh89001749","normalized_label":"perchloric acid","broader":["http://id.loc.gov/authorities/subjects/sh85000536","http://id.loc.gov/authorities/subjects/sh85024545"],"aliases":["Dioxonium perchlorate","Hydronium perchlorate","Hydroxidotrioxidochlorine","Hyperchloric acid"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh89001749","provider":"lcsh","revision":"77d3d73c72f61ab5","taxonomy_revision":"f050b5d4780b1289","title":"Perchloric acid","url":"/topics/S89001749","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"597932015375238658","address_version":"morton4x16-v1","coordinates":[0,21,14396,21504],"answer_status":"Directory metadata; local answer requires separate source review","truth_status":"Subject descriptor, not a factual answer or a demonstrated knowledge gap","reviewed_answer":null}