{"id":"59fcdf6a-11b4-575a-ab21-621f52a2112c","stable_key":"79018983-9179-5c1a-8e7a-d6f47a13582b:ki-mass","predicate":"has_mass_fraction","statement":"Calculated from formula masses, KI is about 76.45% iodine and 23.55% potassium by mass; 130 mg KI contains about 99.4 mg iodine and 30.6 mg potassium.","claim_class":"identity","status":"source_derived_draft","evidence_grade":"ungraded","direction":"context_dependent","is_public":true,"mechanism_event_id":"bd8859d0-d785-5264-aedd-d3624298aee9","mechanism_event_label":"Milligrams of KI are not milligrams of iodine.","subject":{"id":"d6a7fe6a-d90e-5fad-acf4-4971b24fa8d7","slug":"potassium-iodide","display_name":"Potassium iodide","entity_type_key":"chemical_species"},"object":{"id":"83b11ca6-52c7-5a1b-8c39-d9cdf89244e3","slug":"iodide","display_name":"Iodide ion","entity_type_key":"ion"},"evidence_count":1,"mechanism_event":{"id":"bd8859d0-d785-5264-aedd-d3624298aee9","stable_key":"79018983-9179-5c1a-8e7a-d6f47a13582b:ki-mass-event","event_type":"observed_relationship","label":"Milligrams of KI are not milligrams of iodine.","description":"Calculated from formula masses, KI is about 76.45% iodine and 23.55% potassium by mass; 130 mg KI contains about 99.4 mg iodine and 30.6 mg potassium.","status":"provisional","compartment":null,"participants":[{"entity":{"id":"d6a7fe6a-d90e-5fad-acf4-4971b24fa8d7","slug":"potassium-iodide","display_name":"Potassium iodide","entity_type_key":"chemical_species"},"role":"subject","stoichiometry":null,"state_label":"","sequence_order":0,"notes":""},{"entity":{"id":"83b11ca6-52c7-5a1b-8c39-d9cdf89244e3","slug":"iodide","display_name":"Iodide ion","entity_type_key":"ion"},"role":"target","stoichiometry":null,"state_label":"","sequence_order":1,"notes":""},{"entity":{"id":"5dd31e52-f51e-51f3-880e-240abcc0ab1d","slug":"potassium-ion","display_name":"Potassium ion","entity_type_key":"ion"},"role":"context_participant","stoichiometry":null,"state_label":"","sequence_order":2,"notes":""}]},"contexts":[{"dimension":"experimental_model","value_text":"Chemical formula KI; molar mass 166.0028 g/mol.","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"exposure_category","value_text":"Study-specific exposure, including pharmacological and in-vitro conditions; normal is the schema fallback outside the three availability categories.","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"limitations","value_text":"Stoichiometric calculation using K 39.0983 and I 126.9045 g/mol; not a dose recommendation.","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"nutrient_topic","value_text":"Potassium iodide research collection; shared-anion and comparator studies are not all KI interventions.","comparator":null,"unit":null,"notes":"","entity":{"slug":"potassium-iodide","display_name":"Potassium iodide","entity_type_key":"chemical_species"}},{"dimension":"plain_language","value_text":"Milligrams of KI are not milligrams of iodine.","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"primary_references","value_text":"NIST Chemistry WebBook: potassium iodide · chemical reference · https://webbook.nist.gov/cgi/cbook.cgi?ID=7681110","comparator":null,"unit":null,"notes":"","entity":null}],"evidence":[{"id":"b983e4b6-e4ba-59ea-a589-3a064c451b94","evidence_kind":"source_excerpt","locator":"Lines 48-54","start_line":48,"end_line":54,"excerpt":"## ki-mass\nMilligrams of KI are not milligrams of iodine.\nCalculated from formula masses, KI is about 76.45% iodine and 23.55% potassium by mass; 130 mg KI contains about 99.4 mg iodine and 30.6 mg potassium.\nModel: Chemical formula KI; molar mass 166.0028 g/mol.\nLimitations: Stoichiometric calculation using K 39.0983 and I 126.9045 g/mol; not a dose recommendation.\nEvidence location: Primary abstract\nNIST Chemistry WebBook: potassium iodide · chemical reference · https://webbook.nist.gov/cgi/cbook.cgi?ID=7681110","model_system":"Chemical formula KI; molar mass 166.0028 g/mol.","directness":"derived_inference","verification_status":"source_derived_draft","notes":"Curation paraphrase; primary evidence location and source kind retained above.","relationship":"supports","weight":1.0,"link_notes":"","source":{"id":"dc3ce411-f68f-5eb8-87c1-1592665f9cb6","stable_key":"import-79018983-9179-5c1a-8e7a-d6f47a13582b","title":"Potassium iodide: thyroid and non-thyroid mechanisms, interactions and discovery questions (2026-09-18)","document_type":"imported_text","citation_label":"AI-assisted research curation; primary-study references, chemical references and label statements individually identified. Not publisher full text.","file_path":"","sha256":"3ff9da818dd7a763a59c6abcff2eaee136d7f887a777034feaa5ba304a8fa6ce","revision_id":"53f2ae88-8a91-5326-ac49-3bb510ca78c3","review_status":"unverified_draft","notes":""}}],"relations":[],"conflicts":[],"corrections":[],"research":null}