{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.isobenzan","code":"thing-q6085351","url":"https://ver.cy/models/thing/q6085351/","name":"isobenzan","alternateNames":[],"kind":"thing","status":"published","version":"0.1.0-research.1","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.MAT"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"Isobenzan is a synthetic, highly chlorinated polycyclic organic compound formerly used as an organochlorine insecticide and known for its high acute toxicity.","purpose":"Enable an agent to recognise isobenzan, assess the identity and condition of material containing it, and determine which handling or disposition actions have adequate evidence and authorization.","scope":{"in":["Chemical identity, structure, synonyms and registry cross-references","Purity, grade, impurities and isobenzan content in an identified sample","Physical properties with measurement conditions and evidence quality","Exposure hazards, environmental behaviour and material incompatibilities","Jurisdiction-specific restrictions and evidence supporting handling or disposition"],"out":["Complete pesticide formulation designs and commercial product specifications","Isobenzan synthesis routes and manufacturing equipment","Agricultural pest-control programmes and application schedules","Clinical diagnosis and treatment of exposed people","Whole-site contamination models and remediation engineering"],"boundaries":[]},"distinguishingFeatures":["Check concordance among CAS 297-78-9, PubChem CID 9271 and EC 206-045-4; a name match alone is insufficient. [PubChem](https://pubchem.ncbi.nlm.nih.gov/compound/Isobenzan)","Require the C9H4Cl8O formula and matching chlorinated tricyclic ether connectivity, rather than accepting resemblance to names such as isobenzofuran. [PubChem](https://pubchem.ncbi.nlm.nih.gov/compound/Isobenzan)","Resolve Telodrin and Shell 4402 as identity clues while checking whether the record describes the substance or a formulated product. [PubChem](https://pubchem.ncbi.nlm.nih.gov/compound/Isobenzan)","Require an analytical match to an authenticated isobenzan reference when distinguishing it from other organochlorine pesticide residues; appearance and chlorine content do not establish identity."],"structure":{"bundles":[{"id":"identity-and-material-boundary","name":"Identity and material boundary","description":"Establish what counts as isobenzan and what merely contains it.","layers":[{"id":"identifiers-and-structure","name":"Identifiers and structure","description":"Align names, registry identifiers and structural representations.","findings":[{"id":"concordant-isobenzan-identity","name":"Concordant isobenzan identity","description":"Identity assessment must record agreement among chemical identifiers and structure, including any unresolved stereochemistry.","questions":[{"text":"Do the label, certificate and structural record consistently identify CAS 297-78-9?","id":"concordant-isobenzan-identity-q01","kind":"definition"},{"text":"Which source establishes the structure, and does it resolve the stereochemistry of the material being assessed?","id":"concordant-isobenzan-identity-q02","kind":"provenance"}]}]},{"id":"substance-versus-product","name":"Substance versus product","description":"Distinguish isobenzan from commercial formulations, standards and contaminated matrices.","findings":[{"id":"named-material-boundary","name":"Named material boundary","description":"A historical name or product label must be resolved to a substance identity and a separate composition record.","questions":[{"text":"Does a Telodrin-labelled item denote isobenzan itself or a preparation containing carriers and other ingredients?","id":"named-material-boundary-q01","kind":"boundary"},{"text":"Which components and matrix properties belong to the containing material rather than to isobenzan?","id":"named-material-boundary-q02","kind":"boundary"}]}]}]},{"id":"assay-and-physical-condition","name":"Assay and physical condition","description":"Connect sample-level composition and observations to supported isobenzan properties.","layers":[{"id":"analytical-confirmation","name":"Analytical confirmation","description":"Assess reference material, method selectivity and quantified content.","findings":[{"id":"selective-identity-and-assay","name":"Selective identity and assay","description":"An assay must distinguish isobenzan from interfering organochlorines and report the basis of concentration and uncertainty.","questions":[{"text":"What authenticated reference and independent analytical features support identification as isobenzan?","id":"selective-identity-and-assay-q01","kind":"provenance"},{"text":"What is the measured isobenzan content, with matrix, recovery, detection limit and uncertainty?","id":"selective-identity-and-assay-q02","kind":"measurement"},{"text":"Do impurities, degradation or certificate expiry prevent the proposed use as a reference material?","id":"selective-identity-and-assay-q03","kind":"action"}]}]},{"id":"phase-and-thermal-history","name":"Phase and thermal history","description":"Record physical form and distinguish thermal transitions from decomposition.","findings":[{"id":"condition-dependent-property-evidence","name":"Condition-dependent property evidence","description":"CAMEO reports a melting range of 248-252 °F, approximately 120-122 °C, and no boiling-point value; these are reference observations, not batch acceptance criteria. [NOAA CAMEO](https://cameochemicals.noaa.gov/chemical/5030)","questions":[{"text":"What phase and melting behaviour were observed, using which method and sample purity?","id":"condition-dependent-property-evidence-q01","kind":"measurement"},{"text":"Does storage or heating history indicate alteration, and is any reported boiling value actually a decomposition observation?","id":"condition-dependent-property-evidence-q02","kind":"boundary"}]}]}]},{"id":"exposure-and-environmental-behaviour","name":"Exposure and environmental behaviour","description":"Organize evidence about human exposure and the fate of released isobenzan.","layers":[{"id":"route-specific-hazards","name":"Route-specific hazards","description":"Relate hazard evidence to inhalation, skin contact and ingestion.","findings":[{"id":"multiple-exposure-routes","name":"Multiple exposure routes","description":"CAMEO describes high toxicity, absorption through skin, respiratory and gastrointestinal routes, and possible convulsions following exposure. [NOAA CAMEO](https://cameochemicals.noaa.gov/chemical/5030)","questions":[{"text":"Which routes are credible for this powder, solution or contaminated matrix?","id":"multiple-exposure-routes-q01","kind":"boundary"},{"text":"Which current hazard classifications and route-specific exposure criteria apply, and who issued them?","id":"multiple-exposure-routes-q02","kind":"provenance"},{"text":"What documented controls must be satisfied before the proposed handling activity can proceed?","id":"multiple-exposure-routes-q03","kind":"action"}]}]},{"id":"partitioning-and-persistence","name":"Partitioning and persistence","description":"Separate measured mobility, degradation and biological accumulation.","findings":[{"id":"matrix-dependent-fate","name":"Matrix-dependent fate","description":"Record isobenzan-specific solubility, partitioning, degradation and accumulation evidence with the matrix and experimental conditions; unknown values remain unknown.","questions":[{"text":"Which measured solubility, vapour pressure and sorption values support predicted movement from this matrix?","id":"matrix-dependent-fate-q01","kind":"measurement"},{"text":"What evidence establishes persistence or accumulation, and does it concern the parent substance or transformation products?","id":"matrix-dependent-fate-q02","kind":"provenance"}]}]}]},{"id":"handling-and-legal-disposition","name":"Handling and legal disposition","description":"Determine the evidence needed for compatible storage, authorized movement and final disposition.","layers":[{"id":"compatibility-and-containment","name":"Compatibility and containment","description":"Assess contact materials, heating and containment against isobenzan-specific evidence.","findings":[{"id":"reactivity-constrained-handling","name":"Reactivity-constrained handling","description":"CAMEO reports chlorine evolution above 410 °F, approximately 210 °C, and cautions about acids, certain metal salts and catalytically active carriers; this does not establish safety below that temperature. [NOAA CAMEO](https://cameochemicals.noaa.gov/chemical/5030)","questions":[{"text":"Which container materials, solvents, carriers and adjacent chemicals have documented compatibility with this isobenzan material?","id":"reactivity-constrained-handling-q01","kind":"provenance"},{"text":"Does containment condition or thermal history require isolation and specialist assessment before further handling?","id":"reactivity-constrained-handling-q02","kind":"action"}]}]},{"id":"jurisdiction-and-endpoint","name":"Jurisdiction and endpoint","description":"Resolve permissions separately for possession, research, pesticide use, transport and disposal.","findings":[{"id":"activity-specific-authorization","name":"Activity-specific authorization","description":"Each proposed activity requires dated evidence for the relevant jurisdiction, material composition and quantity; historical use does not establish current authorization.","questions":[{"text":"Which current authority establishes whether the proposed isobenzan activity is permitted, restricted or prohibited?","id":"activity-specific-authorization-q01","kind":"provenance"},{"text":"What transport or waste classification applies to this concentration and physical form?","id":"activity-specific-authorization-q02","kind":"boundary"},{"text":"Which authorized recipient or disposal route can accept this material, and what acceptance evidence is required?","id":"activity-specific-authorization-q03","kind":"action"}]}]}]},{"id":"evidence-and-external-alignment","name":"Evidence and external alignment","description":"What the world already says about this thing, gathered so the model can be checked against it.","layers":[{"id":"reported-evidence","name":"Reported evidence","description":"Findings from the breadth pass, kept separate from the structural claims.","findings":[{"id":"evidence-confidence-notes","name":"Check these first","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these check these first hold for the sense of isobenzan this model covers, and on what evidence?","id":"evidence-confidence-notes-q01","kind":"provenance"}]},{"id":"evidence-identifiers","name":"Identifiers and schemes","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these identifiers and schemes hold for the sense of isobenzan this model covers, and on what evidence?","id":"evidence-identifiers-q01","kind":"provenance"}]},{"id":"evidence-real-world-use","name":"Real-world use","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these real-world use hold for the sense of isobenzan this model covers, and on what evidence?","id":"evidence-real-world-use-q01","kind":"provenance"}]},{"id":"evidence-failure-modes-and-hazards","name":"Failure modes and hazards","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these failure modes and hazards hold for the sense of isobenzan this model covers, and on what evidence?","id":"evidence-failure-modes-and-hazards-q01","kind":"provenance"}]},{"id":"evidence-neighbours","name":"Neighbouring kinds and how to tell them apart","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these neighbouring kinds and how to tell them apart hold for the sense of isobenzan this model covers, and on what evidence?","id":"evidence-neighbours-q01","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Identify isobenzan from labels, identifiers and historical records.","Report its status as an obsolete and highly toxic insecticide from official sources.","Flag old stocks for collection by a licensed hazardous waste service."],"mustNot":["Assist in making, obtaining or using it, or advise on its toxicity to harm people or animals.","Move, open or repackage old stocks without trained people and protective controls.","Dispose of it in drains, soil, water or ordinary waste.","Recommend it as a pesticide in place of lawful products."],"requiresHuman":["Any handling, transport or destruction of found stocks.","Reporting contamination of land or water to authorities."]},"ethics":{"considerations":["Organochlorine pesticides persist in the environment and harm people and wildlife long after use.","Abandoned stocks often sit near poor rural communities who bear the risk."],"affectedParties":["Farm workers and rural communities","Wildlife and ecosystems","Waste handlers"]},"owners":{"steward":"Whoever holds an old stock answers for its safe disposal; environmental authorities regulate it.","roles":[],"masterSystems":[]},"relations":[{"target":"Q11173","type":"parent","note":"registry parent class"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.isobenzan","Wikidata: Q6085351 (https://www.wikidata.org/wiki/Q6085351)"]},"properties":{"applicability":"required","items":["Chemical identity: Isobenzan; CAS 297-78-9; PubChem CID 9271; EC 206-045-4","Formula and molar mass: C9H4Cl8O; approximately 411.7 g/mol","Structure and stereochemical resolution: Connectivity verified; stereochemistry specified, partly specified or unresolved","Grade and assay: Mass fraction in % or mg/kg; grade; analytical method; uncertainty; assay date","Physical form: Crystalline solid, powder, dissolved component or matrix-bound residue; temperature in °C","Thermal behaviour: Melting range in °C; decomposition observations; boiling point with pressure or explicitly unknown","Partitioning and mobility: Water solubility in mg/L; vapour pressure in Pa; log Kow; Koc in L/kg; conditions and method","Exposure and hazard classification: Route-specific endpoints; GHS classification with issuer and date; exposure limits with averaging period and authority","Authorization status: Substance or material linked to jurisdiction, activity, authority, effective date and supporting record"]},"recognition":{"applicability":"required","items":["Identity must come from the original label, registration number or laboratory analysis.","Old containers may be corroded or unlabelled and must be treated as unknown hazardous material."]},"capabilities":{"applicability":"required","items":["Reconcile an isobenzan label or inventory record against chemical identifiers and structural evidence.","Assess whether a sample is sufficiently identified and assayed for a proposed analytical purpose.","Compare observed physical condition with documented properties and storage history.","Flag exposure pathways, incompatible contact materials and unresolved handling controls.","Determine whether a proposed transfer, storage or disposal action has current jurisdiction-specific support.","Link an isobenzan residue measurement to its matrix and analytical evidence without treating the matrix as the substance."]},"hazards":{"applicability":"required","items":["High acute toxicity by contact, swallowing or inhalation.","Persistence and accumulation in soil, water and food chains.","Leaking legacy stocks contaminate sites and groundwater."]},"interfaces":{"applicability":"required","items":["Globally Harmonized System of Classification and Labelling of Chemicals (GHS), United Nations."]},"context":{"applicability":"required","items":["This compound is encountered in historical insecticide records, legacy pesticide stocks and investigations of environmental contamination.","Analytical and toxicological work may examine it to establish chemical identity, trace past use or assess contaminated material."]}},"sources":[{"title":"Wikidata item Q6085351: isobenzan","url":"https://www.wikidata.org/wiki/Q6085351","note":"identity and sense of the item"},{"title":"Wikipedia: Isobenzan","url":"https://en.wikipedia.org/wiki/Isobenzan","note":"general description of the item"}],"openQuestions":["Which stereochemical specification defines registered isobenzan, and how do available reference standards demonstrate conformity?","Which primary measurements best establish water solubility, vapour pressure, partitioning and thermal decomposition across relevant grades and conditions?","Which current GHS classifications, occupational exposure limits and activity-specific restrictions apply in the intended jurisdictions?","Which impurities and transformation products occur in aged technical stocks, and which analytical methods reliably distinguish them from isobenzan?","What primary evidence quantifies environmental persistence and bioaccumulation, and how transferable is it to the matrix being assessed?"],"resources":{"spec":"/models/things/publications/thing-q6085351/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q6085351/spec.json"],"providers":["Codex"],"researchStatus":"unreviewed","generatedAt":"2026-09-12T10:37:43Z","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}}