{ "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-12T11:23:50Z", "providers": [ "Codex" ], "breadth": "recalled by Codex without web access - no source was read", "missingProviders": [], "pass": 2, "cost": { "grok": { "seconds": 20.3, "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a0955a-949a-78b2-8181-a6699270bc7d\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: monosodium methyl arsenate\nSense to describe: (none recorded)\nDomain code: PHY.MAT\nAlso known as: (none)\n\n\nContext for this batch of 1001 things:\n# Batc", "usd": 0.0, "recall": true }, "codex": { "seconds": 93.5, "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a0955a-94a9-7aa3-8e9b-f9cb44c4a2cc\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: monosodium methyl arsenate\nRegistry id: vr.tr.monosodium-methyl-arsenate\nPlane / domain: PHY / PHY.MAT\nRegistry definition: (none recorded)\nNames fol" } }, "enrichment": { "pass": 3, "engine": "claude", "producedAt": "2026-10-06T12:00:00Z", "ingestedAt": "2026-10-06T08:56:07+00:00", "fields": [ "agent_conduct", "ethics", "failure_modes_and_hazards", "owners", "standards_and_regulation", "visual_identification" ] }, "gate": { "passed": true, "version": "1.0", "at": "2026-10-07T10:10:29+00:00", "evidence": [ "completeness 1.00", "sense: Wikidata description", "2 live sources", "review by codex: pass" ] } }, "metaModel": { "id": "THING-Q3066718", "registryId": "vr.tr.monosodium-methyl-arsenate", "name": "monosodium methyl arsenate", "version": "0.1.0-research.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.MAT" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q3066718/", "model": { "registry_id": "vr.tr.monosodium-methyl-arsenate", "name": "monosodium methyl arsenate", "purpose": "Enable an agent to identify monosodium methyl arsenate, assess the composition and condition of a particular material, and determine which handling or use decisions require further evidence.", "definition": "Monosodium methyl arsenate (MSMA) is the monosodium salt of methylarsonic acid, a pentavalent organoarsenic compound used as a herbicide.", "scope_statement": "This model owns the chemical identity, material state, analytical quality, arsenic-speciation concerns and decision constraints of vr.tr.monosodium-methyl-arsenate, interpreted as monosodium methanearsonate (MSMA), while keeping formulated products and application activities separate.", "in_scope": [ "MSMA identity, synonyms, identifiers and boundaries with related arsenic compounds", "Salt stoichiometry, hydration, purity and arsenic-containing impurities", "Solid or dissolved material state and condition-dependent physical properties", "Analytical discrimination between MSMA, other methylated arsenic species and inorganic arsenic", "Substance hazards, environmental transformations and jurisdiction-specific constraints" ], "out_of_scope": [ "Commercial herbicide formulations, co-formulants and packaging specifications", "Manufacturing routes and production equipment", "Field application schedules, spraying operations and crop-management plans", "Clinical diagnosis and treatment of arsenic exposure", "Complete models of methanearsonic acid, disodium methanearsonate and inorganic arsenic", "Site remediation engineering and waste-treatment plant operation" ], "distinguishing_features": [ "Resolve the registry wording to monosodium methanearsonate rather than inferring structure from the word arsenate; PubChem identifies this substance as CID 23664719 with formula CH4AsNaO3. [PubChem](https://pubchem.ncbi.nlm.nih.gov/compound/Monosodium-methanearsonate)", "Verify a methyl group directly bonded to arsenic, distinguishing the methanearsonate identity from inorganic arsenates and a possible methyl ester interpretation.", "Verify one sodium equivalent per methanearsonate unit in the declared salt, distinguishing MSMA from disodium methanearsonate and the free acid.", "Use species-resolved evidence to distinguish the intended pentavalent monomethyl arsenic identity from dimethylated or trivalent arsenic species; total arsenic alone is insufficient.", "Distinguish the identified substance from a product containing it: EPA describes MSMA as an organic arsenical herbicide, but product identity and permitted use require separate records. [EPA](https://www.epa.gov/ingredients-used-pesticide-products/monosodium-methanearsonate-msma-organic-arsenical)" ], "characteristics": [ { "name": "Chemical identity resolution", "kind": "relation", "unit_or_values": "Registry id linked to verified structure, preferred name, synonyms, CAS number, PubChem CID and applicable EC identifier", "why_it_matters": "Prevents spelling variants and related arsenic salts from being treated as interchangeable." }, { "name": "Sodium-to-arsenic stoichiometry", "kind": "measurement", "unit_or_values": "mol Na/mol As, with analytical method and matrix", "why_it_matters": "Supports monosodium salt identification, while additional sodium in mixtures can make the bulk ratio misleading." }, { "name": "Hydration and water content", "kind": "measurement", "unit_or_values": "mol H2O/mol salt where established; mass % water", "why_it_matters": "Controls the formula basis and interpretation of assay results." }, { "name": "MSMA assay and reporting basis", "kind": "measurement", "unit_or_values": "mass %, g/L or mol/L; explicitly as salt, acid equivalent or elemental arsenic", "why_it_matters": "Prevents incompatible concentration conventions from producing erroneous comparisons or transfers." }, { "name": "Arsenic species profile", "kind": "measurement", "unit_or_values": "mg As/kg or mg As/L by identified species, with detection limits", "why_it_matters": "Separates target material, impurities and transformation products that a total-arsenic result combines." }, { "name": "Physical state and sample matrix", "kind": "state", "unit_or_values": "Solid, aqueous solution or other documented matrix; temperature and pressure", "why_it_matters": "Determines which measurements and handling assumptions apply." }, { "name": "Solution acidity", "kind": "measurement", "unit_or_values": "pH at stated temperature and concentration", "why_it_matters": "Provides necessary context for dissolved species and material compatibility." }, { "name": "Solubility and thermal behavior", "kind": "measurement", "unit_or_values": "Solubility in g/L with solvent and temperature; thermal events in °C with method and decomposition annotation", "why_it_matters": "Supports state assessment without confusing dehydration or decomposition with melting or boiling." }, { "name": "Hazard classification and exposure constraints", "kind": "category", "unit_or_values": "Authority-specific GHS classification and applicable exposure limits, including chemical coverage, units and averaging period", "why_it_matters": "Prevents classifications or limits for a different arsenic species or formulation from being silently inherited." }, { "name": "Regulatory applicability", "kind": "relation", "unit_or_values": "Jurisdiction, effective date, substance or product authorization, intended use and controlling document", "why_it_matters": "A chemical identity alone does not establish permission for a particular use." } ], "affordances": [ "Match a supplier or laboratory record to MSMA while flagging conflicting names, structures or identifiers.", "Compare material lots after reconciling hydration and concentration reporting bases.", "Specify identity and arsenic-speciation measurements needed to accept, quarantine or reassess a sample.", "Assess whether observed precipitation, water change or assay drift requires renewed characterization.", "Link a proposed use to the applicable product authorization and jurisdictional restrictions.", "Route material or residues to handling and disposal decisions supported by their measured composition." ], "agent_conduct": { "may": [ "Explain MSMA as an organoarsenic herbicide and its registration status in a jurisdiction, from official sources.", "Report label restrictions and hazards from registered product labels." ], "must_not": [ "Recommend using it where it is cancelled, restricted or unregistered.", "Advise applying it near water, food crops or homes against label restrictions.", "Dispose of arsenic-containing residues into drains, soil or waters.", "Present arsenic herbicides as harmless because the arsenic is organic." ], "requires_human": [ "Any decision to apply arsenical herbicides on land the agent manages." ] }, "ethics": { "considerations": [ "Arsenic can convert to more toxic forms and contaminate soil and groundwater.", "Applicators and nearby residents bear the exposure." ], "affected_parties": [ "Applicators and farm workers", "Residents relying on groundwater", "Wildlife" ] }, "owners": { "steward": "The registered holder and the user; pesticide regulators control registration and use.", "master_systems": [ "National pesticide registers" ] }, "visual_identification": [ "Identified by container label, chemical name and identifier, and certificate of analysis rather than by appearance alone." ], "failure_modes_and_hazards": [ "Arsenic contamination of soil and groundwater.", "Toxicity from skin contact or ingestion.", "Harm to non-target plants and animals." ], "standards_and_regulation": [ "Globally Harmonized System of Classification and Labelling of Chemicals (GHS), United Nations." ], "what_it_is_for": [ "Monosodium methyl arsenate is encountered as an active ingredient in herbicide formulations and in records of agricultural and turf weed control.", "It is also relevant to environmental monitoring of arsenic associated with past or present herbicide use.", "Assessment distinguishes the identified compound from other arsenic species and considers the formulation and locally permitted uses." ] }, "sources": [ { "id": "wikidata", "title": "Wikidata item Q3066718: monosodium methyl arsenate", "url": "https://www.wikidata.org/wiki/Q3066718", "url_status": "live", "what_it_supports": "identity and sense of the item", "checked_by": "wikidata-api" }, { "id": "wikipedia-en", "title": "Wikipedia: Monosodium methyl arsonate", "url": "https://en.wikipedia.org/wiki/Monosodium_methyl_arsonate", "url_status": "live", "what_it_supports": "general description of the item", "checked_by": "wikidata-api sitelink" } ], "structure": { "bundles": [ { "id": "msma-identity", "name": "MSMA identity", "description": "Resolve the registry name to a defined monosodium methanearsonate identity.", "rationale": "The wording methyl arsenate can obscure connectivity and invite confusion with neighboring arsenic substances.", "layers": [ { "id": "name-structure-resolution", "name": "Name and structure resolution", "description": "Connect names and identifiers to the intended chemical structure.", "findings": [ { "id": "registry-name-mapping", "name": "Registry name mapping", "description": "Record the evidence that the registry label denotes MSMA and retain alternative wording as traceable synonyms.", "questions": [ { "text": "Which authoritative identity record establishes that this registry label denotes monosodium methanearsonate?", "kind": "definition", "id": "registry-name-mapping-q01" }, { "text": "Which CAS, PubChem and EC identifiers refer to the same chemical form rather than a hydrate or mixture?", "kind": "provenance", "id": "registry-name-mapping-q02" } ] } ] }, { "id": "neighboring-arsenic-identities", "name": "Neighboring arsenic identities", "description": "Define the structural and stoichiometric tests that separate MSMA from related compounds.", "findings": [ { "id": "salt-and-species-boundaries", "name": "Salt and species boundaries", "description": "Distinguish monosodium salt identity from free acid, disodium salt, inorganic arsenic and other methylated species.", "questions": [ { "text": "What evidence establishes methyl-to-arsenic connectivity and the intended arsenic oxidation state?", "kind": "measurement", "id": "salt-and-species-boundaries-q01" }, { "text": "How is monosodium salt identity distinguished from disodium methanearsonate when dissolved species depend on solution conditions?", "kind": "boundary", "id": "salt-and-species-boundaries-q02" } ] } ] } ] }, { "id": "lot-composition", "name": "Lot composition", "description": "Represent the actual material associated with the nominal MSMA identity.", "rationale": "Water, impurities and assay conventions can make two MSMA-labeled materials materially different.", "layers": [ { "id": "assay-and-hydration", "name": "Assay and hydration", "description": "Establish the basis used to quantify MSMA in a lot.", "findings": [ { "id": "comparable-content", "name": "Comparable content", "description": "Keep salt mass, acid equivalent, elemental arsenic and water content distinguishable.", "questions": [ { "text": "Is the reported content expressed as MSMA salt, methanearsonic acid equivalent or elemental arsenic?", "kind": "measurement", "id": "comparable-content-q01" }, { "text": "Does the assay use an anhydrous, hydrated, dry-mass or as-received basis, and what evidence supports it?", "kind": "provenance", "id": "comparable-content-q02" } ] } ] }, { "id": "impurities-and-grade", "name": "Impurities and grade", "description": "Describe composition that affects suitability beyond nominal active content.", "findings": [ { "id": "lot-acceptance-evidence", "name": "Lot acceptance evidence", "description": "Require explicit impurity specifications and separate technical material from formulated products.", "questions": [ { "text": "What inorganic arsenic and other arsenic-species impurities were measured, with what quantification limits?", "kind": "measurement", "id": "lot-acceptance-evidence-q01" }, { "text": "Which lot-specific specification determines suitability for the intended use?", "kind": "action", "id": "lot-acceptance-evidence-q02" }, { "text": "At what point do co-formulants require a linked product model rather than description as an MSMA material grade?", "kind": "boundary", "id": "lot-acceptance-evidence-q03" } ] } ] } ] }, { "id": "physical-state-and-stability", "name": "Physical state and stability", "description": "Relate measured properties and changes to a defined MSMA material and its conditions.", "rationale": "Properties of a salt, hydrated material and commercial solution cannot be transferred without checking their basis.", "layers": [ { "id": "conditioned-properties", "name": "Conditioned properties", "description": "Record phase, solubility and thermal observations with the conditions needed to interpret them.", "findings": [ { "id": "state-specific-constants", "name": "State-specific constants", "description": "Attach physical measurements to the tested chemical form and matrix.", "questions": [ { "text": "Which solubility measurements apply to the identified MSMA form, solvent, temperature and pH?", "kind": "measurement", "id": "state-specific-constants-q01" }, { "text": "Do reported thermal values describe melting, dehydration or decomposition, and is a boiling point actually established?", "kind": "measurement", "id": "state-specific-constants-q02" } ] } ] }, { "id": "storage-related-change", "name": "Storage-related change", "description": "Connect changes in stored material to evidence for continued suitability.", "findings": [ { "id": "reassessment-triggers", "name": "Reassessment triggers", "description": "Define observations that require renewed assay or speciation instead of assuming stability.", "questions": [ { "text": "What measured changes in water content, pH, appearance or species profile occur under the documented storage conditions?", "kind": "measurement", "id": "reassessment-triggers-q01" }, { "text": "Which changes trigger quarantine, reanalysis or rejection under the applicable material specification?", "kind": "action", "id": "reassessment-triggers-q02" } ] } ] } ] }, { "id": "arsenic-analysis-and-fate", "name": "Arsenic analysis and fate", "description": "Track what analytical results establish and how arsenic species may change after release.", "rationale": "MSMA identity and environmental assessment require more information than a total-arsenic concentration.", "layers": [ { "id": "species-resolved-analysis", "name": "Species-resolved analysis", "description": "Establish whether a method can distinguish the target species from relevant alternatives.", "findings": [ { "id": "analytical-specificity", "name": "Analytical specificity", "description": "Document species coverage, sample preservation and analytical uncertainty.", "questions": [ { "text": "Which validated method distinguishes monomethyl arsenic species from inorganic and dimethylated arsenic in this matrix?", "kind": "measurement", "id": "analytical-specificity-q01" }, { "text": "How do preservation, extraction and holding time affect the species profile measured in the sample?", "kind": "provenance", "id": "analytical-specificity-q02" }, { "text": "Does species-resolved arsenic reconcile with independently measured total arsenic within stated uncertainty?", "kind": "measurement", "id": "analytical-specificity-q03" } ] } ] }, { "id": "environmental-transformation", "name": "Environmental transformation", "description": "Frame research into transformation, retention and transport in the receiving environment.", "findings": [ { "id": "parent-and-residue-accounting", "name": "Parent and residue accounting", "description": "Keep disappearance of the starting species separate from removal of arsenic from the system.", "questions": [ { "text": "Which transformation products and rates are supported for the relevant soil or water conditions?", "kind": "provenance", "id": "parent-and-residue-accounting-q01" }, { "text": "What measurements distinguish transformation from sorption, leaching or physical export of arsenic?", "kind": "measurement", "id": "parent-and-residue-accounting-q02" } ] } ] } ] }, { "id": "hazards-and-permitted-actions", "name": "Hazards and permitted actions", "description": "Connect MSMA-specific evidence to handling, use and disposal decisions.", "rationale": "Neither the organic arsenical designation nor herbicidal activity establishes safety or legal permission.", "layers": [ { "id": "hazard-evidence", "name": "Hazard evidence", "description": "Identify classifications and exposure constraints that apply to the actual material.", "findings": [ { "id": "applicable-hazard-record", "name": "Applicable hazard record", "description": "Separate evidence for MSMA from evidence for impurities, transformation products and formulations.", "questions": [ { "text": "Which current classification applies to this chemical form and purity, and which authority or supplier supports it?", "kind": "provenance", "id": "applicable-hazard-record-q01" }, { "text": "Does each proposed exposure limit explicitly cover MSMA or the relevant arsenic category, and on what mass basis?", "kind": "boundary", "id": "applicable-hazard-record-q02" }, { "text": "What handling controls follow from the actual physical form, exposure route and supported hazard record?", "kind": "action", "id": "applicable-hazard-record-q03" } ] } ] }, { "id": "authorization-and-disposition", "name": "Authorization and disposition", "description": "Link intended activities to dated, jurisdiction-specific controlling records.", "findings": [ { "id": "use-and-disposal-gates", "name": "Use and disposal gates", "description": "Require the relevant product label or waste determination before concluding that an activity is permitted.", "questions": [ { "text": "Which current authorization and product label govern the proposed MSMA use in the specified jurisdiction and location?", "kind": "action", "id": "use-and-disposal-gates-q01" }, { "text": "Which waste characterization and local rules determine the allowed disposition of this material or its arsenic-containing residues?", "kind": "action", "id": "use-and-disposal-gates-q02" } ] } ] } ] }, { "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.", "rationale": "A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.", "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.", "evidence": [ "This is a recall-based description; no sources were consulted.", "Confirm hydration state, purity, and formulation before assigning physical constants or product-specific hazards.", "Check current jurisdiction-specific registrations, GHS classifications, and exposure limits; historical uses do not establish present authorization." ], "questions": [ { "id": "evidence-confidence-notes-q01", "text": "Which of these check these first hold for the sense of monosodium methyl arsenate this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-identifiers", "name": "Identifiers and schemes", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ { "scheme": "CAS Registry Number", "value_or_pattern": "2163-80-6", "note": "Identifies monosodium methylarsonate, commonly abbreviated MSMA." }, { "scheme": "Molecular formula", "value_or_pattern": "CH4AsNaO3", "note": "Formula for the anhydrous monosodium salt; water of hydration changes the formula mass." } ], "questions": [ { "id": "evidence-identifiers-q01", "text": "Which of these identifiers and schemes hold for the sense of monosodium methyl arsenate this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-standards-and-regulation", "name": "Standards and regulation", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "United States Environmental Protection Agency: pesticide registration and use restrictions under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA)." ], "questions": [ { "id": "evidence-standards-and-regulation-q01", "text": "Which of these standards and regulation hold for the sense of monosodium methyl arsenate this model covers, and on what evidence?", "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.", "evidence": [ "Post-emergence control of certain grassy weeds.", "Historical agricultural use in cotton.", "Historical weed control in turf and non-crop areas." ], "questions": [ { "id": "evidence-real-world-use-q01", "text": "Which of these real-world use hold for the sense of monosodium methyl arsenate this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-measurements", "name": "Typical measurements", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ { "quantity": "Molar mass of anhydrous substance", "typical_range": "161.95", "unit": "g/mol" } ], "questions": [ { "id": "evidence-measurements-q01", "text": "Which of these typical measurements hold for the sense of monosodium methyl arsenate this model covers, and on what evidence?", "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.", "evidence": [ "Arsenic-containing material whose ingestion or other significant exposure can cause poisoning.", "Environmental transformation can produce inorganic arsenic species; methylation does not guarantee permanent detoxification.", "Repeated application can increase arsenic loading in soil.", "Runoff or leaching can transport arsenic into surrounding water systems.", "Herbicidal exposure can injure susceptible non-target plants." ], "questions": [ { "id": "evidence-failure-modes-and-hazards-q01", "text": "Which of these failure modes and hazards hold for the sense of monosodium methyl arsenate this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-regional-variation", "name": "Regional variation", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "Pesticide authorization, permitted application sites, and label restrictions vary by jurisdiction and over time." ], "questions": [ { "id": "evidence-regional-variation-q01", "text": "Which of these regional variation hold for the sense of monosodium methyl arsenate this model covers, and on what evidence?", "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.", "evidence": [ { "name": "Methylarsonic acid", "difference": "The parent acid rather than its monosodium salt." }, { "name": "Disodium methyl arsenate (DSMA)", "difference": "Contains two sodium ions per methylarsonate unit rather than one." }, { "name": "Sodium arsenate", "difference": "An inorganic arsenic salt without the carbon-arsenic bond present in MSMA." }, { "name": "MSMA herbicide formulation", "difference": "A commercial mixture containing MSMA and other ingredients, rather than the chemical substance alone." } ], "questions": [ { "id": "evidence-neighbours-q01", "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of monosodium methyl arsenate this model covers, and on what evidence?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Which CAS and EC identifiers, hydrate distinctions and structural records definitively resolve the registry wording to the intended MSMA substance?", "Which primary measurements establish solubility, thermal behavior and storage stability for specified MSMA forms rather than commercial formulations?", "Which validated analytical methods and impurity specifications adequately distinguish MSMA from inorganic arsenic and other methylated species in relevant lots?", "Which environmental transformation products, rates and transport behavior are supported under the intended receiving conditions?", "Which current hazard classifications, exposure limits, product permissions and waste rules apply in the intended jurisdiction?" ], "statistics": { "bundles": 6, "layers": 11, "findings": 18, "questions": 31 } }