{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.sodium","code":"thing-q658","url":"https://ver.cy/models/thing/q658/","name":"sodium","alternateNames":["dietary sodium","allotrope of sodium","sodium-24","sodium-25","sodium-26","sodium-18","sodium-19","sodium-20","sodium-21","sodium-27","sodium-28","sodium-29"],"kind":"thing","status":"published","version":"0.2.0-wave.3","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.MAT"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A chemical element with symbol Na and atomic number 11, a soft, silvery, highly reactive alkali metal requiring appropriate controlled storage, occurring in compounds such as sodium chloride and sodium carbonate and never free in nature, essential to life in the form of sodium ions acting as an electrolyte, and used in the form of its compounds in food, chemicals, glass and soap and as the metal in sodium vapour lamps, heat transfer in fast reactors and organic synthesis; sodium has one stable isotope, sodium-23, and radioactive ones such as sodium-22 and sodium-24, and dietary sodium intake is a public health concern.","purpose":"Let an agent identify sodium and its properties, relay isotopes, compounds, production and uses from reference sources, describe dietary sodium and health guidance in general terms, and distinguish the element from salt and other compounds.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Highly reactive metal","Single stable isotope","Essential electrolyte","Dietary concern"],"structure":{"bundles":[{"id":"identify","name":"Identify","description":"What sodium is.","layers":[{"id":"properties","name":"Properties","description":"Properties.","findings":[{"id":"properties-finding","name":"Properties","description":"Properties.","questions":[{"text":"What are the physical and chemical properties of sodium?","kind":"definition"},{"text":"Is the question about the element, salt or dietary sodium?","kind":"boundary"}]}]},{"id":"isotopes","name":"Isotopes","description":"Isotopes.","findings":[{"id":"isotopes-finding","name":"Isotopes","description":"Isotopes.","questions":[{"text":"Which isotopes exist, and how are sodium-22 and sodium-24 used?","kind":"definition"},{"text":"Which entry fits the specific isotope?","kind":"action"}]}]}]},{"id":"produce","name":"Produce","description":"Compounds and production.","layers":[{"id":"compounds","name":"Compounds","description":"Compounds.","findings":[{"id":"compounds-finding","name":"Compounds","description":"Compounds.","questions":[{"text":"What are the major sodium compounds, and how are they produced and used?","kind":"provenance"},{"text":"Which entry fits the specific compound?","kind":"action"}]}]},{"id":"metal","name":"Metal","description":"Sodium metal.","findings":[{"id":"metal-finding","name":"Metal","description":"Metal.","questions":[{"text":"How is sodium metal produced by the Downs process, and where is it used?","kind":"provenance"},{"text":"Which references are standard?","kind":"provenance"}]}]}]},{"id":"health","name":"Health","description":"Biology and diet.","layers":[{"id":"biology","name":"Biology","description":"Sodium in the body.","findings":[{"id":"biology-finding","name":"Biology","description":"Biology.","questions":[{"text":"What role does sodium play as an electrolyte and in nerve function?","kind":"provenance"},{"text":"Which entry fits electrolyte?","kind":"action"}]}]},{"id":"diet","name":"Diet","description":"Dietary sodium.","findings":[{"id":"diet-finding","name":"Diet","description":"Diet.","questions":[{"text":"What do WHO and national guidelines say about sodium intake and health, in general terms?","kind":"provenance"},{"text":"Is the user asking for personal dietary advice, which needs a professional?","kind":"boundary"}]}]}]},{"id":"context","name":"Context","description":"History and safety.","layers":[{"id":"discovery","name":"Discovery","description":"Discovery.","findings":[{"id":"discovery-finding","name":"Discovery","description":"Discovery.","questions":[{"text":"How was sodium isolated by Davy in 1807, and why is it called natrium in many languages?","kind":"provenance"},{"text":"Which entry fits the history of chemistry?","kind":"action"}]}]},{"id":"safety","name":"Safety","description":"Safety.","findings":[{"id":"safety-finding","name":"Safety","description":"Safety.","questions":[{"text":"How is sodium metal handled safely, and what incidents have occurred, as reported?","kind":"provenance"},{"text":"Which sources are cited?","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Describe sodium's properties and uses, and report safety data for the metal and its compounds.","Explain dietary sodium guidance from public health sources."],"mustNot":["Advise handling or experimenting with sodium metal outside a controlled laboratory.","Recommend disposal of sodium metal or its residues outside approved routes.","Give sodium intake advice to a patient with heart or kidney disease in place of a clinician.","Encourage online stunts involving reactive metals."],"requiresHuman":["Approving laboratory or industrial handling procedures for the metal.","Any dietary prescription for a patient."]},"ethics":{"considerations":["Sodium metal reacts violently with water and has injured people copying videos.","Excess dietary sodium drives high blood pressure across whole populations."],"affectedParties":["Laboratory and industrial workers","People with heart or kidney disease","Viewers of online stunts"]},"owners":{"steward":"The holder of the material; food authorities regulate dietary labelling.","roles":[],"masterSystems":["Chemical substance inventories"]},"relations":[{"target":"Q19557","type":"parent","note":"registry parent class"},{"target":"Q208106","type":"parent","note":"registry parent class"},{"target":"Q428766","type":"parent","note":"registry parent class"},{"target":"alkali metal","type":"related","note":"in registry terms"},{"target":"s-block","type":"related","note":"element in registry terms"},{"target":"light metal","type":"related","note":"in registry terms"},{"target":"sodium chloride","type":"related","note":"common salt"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.sodium","Wikidata: Q658 (https://www.wikidata.org/wiki/Q658)","symbol: Na","CAS: 7440-23-5"]},"properties":{"applicability":"required","items":["atomic number: 11 Z","standard atomic weight: 22.990 u","melting point: 97.8 degrees C","recommended sodium intake: under 2 g per day - WHO for adults"]},"recognition":{"applicability":"required","items":["Element 11, symbol Na","Alkali metal of salt and electrolytes","Salt is sodium chloride, a compound; potassium is the next alkali metal","A soft silvery metal that tarnishes quickly and reacts violently with water."]},"capabilities":{"applicability":"required","items":["relay properties and isotopes","explain compounds and uses","relay dietary guidance in general terms","distinguish from salt"]},"hazards":{"applicability":"required","items":["Fire and explosion with water","Excess dietary sodium and hypertension","Confusing sodium with salt","Agents giving personal dietary advice"]},"interfaces":{"applicability":"required","items":["Chemical safety rules for reactive metals","WHO and national dietary sodium guidelines","Food labelling rules for sodium and salt","Nuclear rules for sodium-cooled reactors"]},"context":{"applicability":"required","items":["Compounds for industry and food; the metal for lamps, reactors and synthesis.","sodium metal and its allotropes","sodium compounds such as chloride, hydroxide, carbonate and bicarbonate","stable sodium-23 and radioactive isotopes such as sodium-18, 22, 24, 25 and 26","dietary sodium","sodium in biology as an electrolyte"]}},"sources":[{"title":"Wikidata item Q658: sodium","url":"https://www.wikidata.org/wiki/Q658","note":"identity and sense of the item"},{"title":"Wikipedia: Sodium","url":"https://en.wikipedia.org/wiki/Sodium","note":"general description of the item"}],"openQuestions":["Should dietary sodium and sodium chloride be separate primary entries?","How should health guidelines be linked?","The registry entry has merged aliases naming isotopes and an allotrope; should they be split off?"],"resources":{"spec":"/models/things/publications/thing-q658/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q658/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-13T01:44:01Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-07T10:10:32+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}