{"envelope_version":"1.1","ok":true,"result":{"query":"UN1845","normalized":"1845","candidates":[{"entity_type":"dangerous_good","identifier_type":"un_number","value_normalized":"1845","summary":"UN 1845 Carbon dioxide, solid (Dry ice) — Class 9 — not subject to ADR (road)","record":{"un_number":"1845","proper_shipping_name":"Carbon dioxide, solid (Dry ice)","class":"9","packing_group":null,"not_subject_to_adr":true,"conditions_ref":"5.5.3","transport_category":null,"tunnel_restriction_code":null,"limited_quantity":null,"excepted_quantity":null,"variant_count":1},"verification_status":"verified","verification_basis":"record","rank_basis":"dataset record hit · verification verified (record-level) · static prior adr #2 of 10 · tiebreak un_number/1845","canonical_url":"/adr/un/1845","api_url":"/api/adr?un=1845","citation":{"text":"UN 1845 Carbon dioxide, solid (Dry ice) — Class 9 — not subject to ADR (road), section 5.5.3 conditions apply, UNECE ADR 2025.","qualifier":"Factual compilation, not legal advice — verify against the current UNECE ADR text."}}],"count":1},"confidence":{"level":"high","basis":"deterministic"},"_source":{"name":"FreightUtils published methodology","checked":"request-time","provenance_status":"computed","source_url":"https://www.freightutils.com/methodology"},"citation":{"text":"\"UN1845\" resolved to 1 candidate — top: un_number 1845, UN 1845 Carbon dioxide, solid (Dry ice) — Class 9 — not subject to ADR (road).","qualifier":"Deterministic grammar match over FreightUtils reference datasets — each candidate carries its own dataset citation; not legal advice."},"normalized_input":{"q_input":"UN1845","normalized":"1845"}}