{ "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-12T11:18:23Z", "providers": [ "Codex" ], "breadth": "recalled by Codex without web access - no source was read", "missingProviders": [], "pass": 2, "cost": { "grok": { "seconds": 20.4, "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: 01a09555-ef30-79b2-960f-88d7e064406d\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: methylsilane\nSense to describe: (none recorded)\nDomain code: PHY.MAT\nAlso known as: (none)\n\n\nContext for this batch of 1001 things:\n# Batch 044: 1001 re", "usd": 0.0, "recall": true }, "codex": { "seconds": 71.6, "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: 01a09555-ef42-7e82-bdb7-511315d343a1\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: methylsilane\nRegistry id: vr.tr.methylsilane\nPlane / domain: PHY / PHY.MAT\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n" } }, "enrichment": { "pass": 3, "engine": "claude", "producedAt": "2026-10-06T12:00:00Z", "ingestedAt": "2026-10-06T08:53:13+00:00", "fields": [ "agent_conduct", "ethics", "failure_modes_and_hazards", "owners", "standards_and_regulation", "visual_identification" ] }, "gate": { "passed": true, "version": "1.0", "at": "2026-10-07T10:10:33+00:00", "evidence": [ "completeness 1.00", "sense: Wikidata description", "2 live sources", "review by codex: pass" ] } }, "metaModel": { "id": "THING-Q978572", "registryId": "vr.tr.methylsilane", "name": "methylsilane", "version": "0.1.0-research.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.MAT" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q978572/", "model": { "registry_id": "vr.tr.methylsilane", "name": "methylsilane", "purpose": "Enable an agent to recognise methylsilane, assess a particular material lot and its physical state, and determine whether its documented quality and handling constraints permit an intended use.", "definition": "Methylsilane is the organosilicon compound CH3SiH3, a volatile, flammable molecular substance in which one hydrogen atom of silane is replaced by a methyl group.", "scope_statement": "This model owns the chemical identity of methylsilane (CH3SiH3), registry entry vr.tr.methylsilane in PHY / PHY.MAT, and the composition, condition, evidence and use constraints attached to samples of that substance.", "in_scope": [ "Molecular identity and distinction from other methyl-substituted silanes", "Lot-specific methylsilane content, impurities and grade", "Physical phase and properties under stated temperature and pressure", "Chemical stability, incompatibilities and exposure hazards", "Evidence supporting use eligibility and jurisdiction-specific substance identification" ], "out_of_scope": [ "Design, certification and maintenance of cylinders and gas-delivery equipment", "Complete manufacturing or purification processes", "Deposition reactor recipes and operating procedures", "Properties of films or other products made from methylsilane", "Commercial mixture formulations beyond their relationship to the methylsilane constituent" ], "distinguishing_features": [ "The molecular structure contains one methyl group bonded to SiH3: CH3SiH3, molecular formula CH6Si; identity reference: [NIST Chemistry WebBook](https://webbook.nist.gov/cgi/cbook.cgi?ID=992949).", "CAS 992-94-9 identifies this substance; a name containing 'methylsilane' is insufficient to identify a substituted derivative as the same substance.", "Unlike silane, SiH4, methylsilane contains carbon and a Si-C bond.", "Unlike dimethylsilane and tetramethylsilane, methylsilane has exactly one methyl substituent and three silicon-bound hydrogens.", "Methylsilane contains neither chlorine nor oxygen; methylchlorosilanes and methylalkoxysilanes require separate identities." ], "characteristics": [ { "name": "Molecular connectivity", "kind": "category", "unit_or_values": "CH3-SiH3; molecular formula CH6Si", "why_it_matters": "Distinguishes the registered substance from the broader silane family and substituted derivatives." }, { "name": "Substance identifiers", "kind": "relation", "unit_or_values": "CAS 992-94-9; EC 213-598-5; PubChem CID pending verification", "why_it_matters": "Supports record matching; the EC identifier is listed in the [supplier record](https://www.sigmaaldrich.com/TH/en/product/aldrich/462993)." }, { "name": "Methylsilane assay", "kind": "measurement", "unit_or_values": "mol%, mass% or volume%, with analytical method and uncertainty", "why_it_matters": "Prevents purity claims on different measurement bases from being treated as equivalent." }, { "name": "Impurity profile", "kind": "measurement", "unit_or_values": "Species-specific ppm with concentration basis and detection limits", "why_it_matters": "Related silanes, chlorinated species and residual gases can affect suitability even when total assay passes." }, { "name": "Material phase", "kind": "state", "unit_or_values": "Gas, liquid or two-phase, at recorded temperature in K and absolute pressure in kPa", "why_it_matters": "A product's supplied form does not establish its phase under subsequent conditions." }, { "name": "Phase-transition properties", "kind": "measurement", "unit_or_values": "Melting and boiling temperatures in K with pressure; vapour pressure in kPa at specified temperature", "why_it_matters": "Supports phase assessment and interpretation of pressure-dependent behaviour." }, { "name": "Hazard classification", "kind": "category", "unit_or_values": "Hazard classes, categories and statements with jurisdiction, SDS revision and supplied form", "why_it_matters": "The [supplier SDS](https://www.sigmaaldrich.com/US/en/sds/aldrich/462993) reports flammability, pressure and acute exposure hazards that must remain tied to their classification context." }, { "name": "Use eligibility", "kind": "state", "unit_or_values": "Supported, conditional, unsupported or unresolved for a specified application", "why_it_matters": "Combines lot quality, material condition and applicable restrictions without treating a grade label as blanket permission." } ], "affordances": [ "Match a material record to methylsilane using identifiers and structural evidence.", "Compare a lot's assay and impurity results with an intended-use specification.", "Assess whether recorded temperature and pressure support the stated phase.", "Identify missing compatibility, hazard or exposure evidence before authorising a material use.", "Link methylsilane to a proposed precursor or reagent role while retaining application-specific qualification requirements." ], "agent_conduct": { "may": [ "Identify methylsilane from cylinder labels, identifiers and safety data sheets.", "Report its hazards from official sources.", "Flag a leaking or damaged cylinder for emergency response." ], "must_not": [ "Handle or connect cylinders without trained people and gas-safety controls.", "Release it where it can ignite near people or equipment.", "Store cylinders unsecured or near oxidizers or heat.", "Dispose of residual gas outside approved systems." ], "requires_human": [ "Responding to a leak.", "Changing gas-handling systems in a facility." ] }, "ethics": { "considerations": [ "Flammable gases in fabs and laboratories can cause fires that harm workers." ], "affected_parties": [ "Fab and laboratory staff", "Emergency responders" ] }, "owners": { "steward": "The facility or gas supplier that holds the cylinder.", "master_systems": [] }, "visual_identification": [ "Identity rests on the cylinder label, valve type and documentation.", "Gas cylinders carry hazard diamonds for flammable gas." ], "failure_modes_and_hazards": [ "Highly flammable gas that forms explosive mixtures with air.", "Cylinder pressure hazards.", "Fire in gas cabinets and supply lines." ], "standards_and_regulation": [ "Globally Harmonized System of Classification and Labelling of Chemicals (GHS), United Nations." ], "what_it_is_for": [ "Methylsilane is encountered in specialist organosilicon research and as a precursor in some thin-film deposition processes.", "Its identity, purity and documented supply conditions matter when assessing suitability for a particular research or manufacturing process." ] }, "sources": [ { "id": "wikidata", "title": "Wikidata item Q978572: methylsilane", "url": "https://www.wikidata.org/wiki/Q978572", "url_status": "live", "what_it_supports": "identity and sense of the item", "checked_by": "wikidata-api" }, { "id": "wikipedia-en", "title": "Wikipedia: Methylsilane", "url": "https://en.wikipedia.org/wiki/Methylsilane", "url_status": "live", "what_it_supports": "general description of the item", "checked_by": "wikidata-api sitelink" } ], "structure": { "bundles": [ { "id": "molecular-identity", "name": "Molecular identity", "description": "Establishes exactly which silicon-containing substance the record represents.", "rationale": "Methylsilane is easily confused with related silanes and longer chemical names containing the same word.", "layers": [ { "id": "structure-and-names", "name": "Structure and names", "description": "Connects the registry name to molecular connectivity.", "findings": [ { "id": "single-methyl-silane", "name": "Single methyl substitution", "description": "Record one methyl group bonded to silicon bearing three hydrogens; NIST also records the synonym silaethane.", "questions": [ { "text": "Does the supplied structure represent CH3-SiH3 with exactly three Si-H bonds?", "kind": "definition", "id": "single-methyl-silane-q01" }, { "text": "Does the submitted name refer to this molecule or to a further substituted silane?", "kind": "boundary", "id": "single-methyl-silane-q02" } ] } ] }, { "id": "identifier-evidence", "name": "Identifier evidence", "description": "Resolves external identifiers and analytical identity evidence.", "findings": [ { "id": "identity-crosswalk", "name": "Verified identity crosswalk", "description": "Associate registry identifiers and reference spectra with the same molecular species, distinguishing substance records from supplier products.", "questions": [ { "text": "Which read sources connect CAS 992-94-9, the EC number and a verified PubChem compound record?", "kind": "provenance", "id": "identity-crosswalk-q01" }, { "text": "What analytical evidence distinguishes the sample from silane and other methylsilanes?", "kind": "measurement", "id": "identity-crosswalk-q02" } ] } ] } ] }, { "id": "composition-and-grade", "name": "Composition and grade", "description": "Describes the methylsilane content and accompanying species in an actual lot.", "rationale": "A nominally identical molecule can have different application eligibility because of impurities or deliberate dilution.", "layers": [ { "id": "assay-and-formulation", "name": "Assay and formulation", "description": "Separates neat-substance purity from mixture concentration.", "findings": [ { "id": "methylsilane-fraction", "name": "Methylsilane fraction", "description": "Record concentration basis, analytical method and whether other components are intentional constituents.", "questions": [ { "text": "What methylsilane fraction was measured, on what basis and with what uncertainty?", "kind": "measurement", "id": "methylsilane-fraction-q01" }, { "text": "Is this a neat methylsilane lot or a mixture whose formulation belongs to a separate record?", "kind": "boundary", "id": "methylsilane-fraction-q02" } ] } ] }, { "id": "impurities-and-qualification", "name": "Impurities and qualification", "description": "Connects individual impurity limits to evidence supporting the claimed grade.", "findings": [ { "id": "species-specific-impurities", "name": "Species-specific impurities", "description": "Track relevant impurities individually; the supplier specification lists silane, dimethylsilane, methylchlorosilane, methane and residual gases.", "questions": [ { "text": "Which impurities were measured in this lot, with what detection limits and concentration bases?", "kind": "measurement", "id": "species-specific-impurities-q01" }, { "text": "Which certificate and application specification support the claimed electronic or other grade?", "kind": "provenance", "id": "species-specific-impurities-q02" } ] } ] } ] }, { "id": "phase-and-physical-state", "name": "Phase and physical state", "description": "Relates methylsilane properties to the conditions of a sample.", "rationale": "State and pressure behaviour cannot be inferred reliably from an unqualified product label.", "layers": [ { "id": "phase-envelope", "name": "Phase envelope", "description": "Captures temperature-dependent and pressure-dependent phase evidence.", "findings": [ { "id": "conditioned-phase-properties", "name": "Conditioned phase properties", "description": "Keep transition temperatures and vapour-pressure data with their conditions, methods and uncertainty.", "questions": [ { "text": "What sourced melting and boiling temperatures apply, and at what pressures?", "kind": "measurement", "id": "conditioned-phase-properties-q01" }, { "text": "Which validated vapour-pressure data cover the sample's relevant temperature range?", "kind": "provenance", "id": "conditioned-phase-properties-q02" } ] } ] }, { "id": "sample-state", "name": "Sample state", "description": "Interprets measurements from a particular quantity of methylsilane.", "findings": [ { "id": "observed-phase-and-inventory", "name": "Observed phase and inventory", "description": "Record sample temperature, absolute pressure and phase before interpreting density or remaining quantity.", "questions": [ { "text": "What temperature and absolute pressure were observed, and is the sample single-phase or two-phase?", "kind": "measurement", "id": "observed-phase-and-inventory-q01" }, { "text": "What phase-appropriate evidence supports the reported mass or amount of methylsilane?", "kind": "measurement", "id": "observed-phase-and-inventory-q02" } ] } ] } ] }, { "id": "reactivity-and-hazards", "name": "Reactivity and hazards", "description": "Captures evidence governing exposure, ignition and chemical compatibility.", "rationale": "Methylsilane decisions require substance-specific evidence rather than assumptions transferred from silane or organosilanes generally.", "layers": [ { "id": "hazard-evidence", "name": "Hazard evidence", "description": "Maintains classification and exposure information with their applicability.", "findings": [ { "id": "applicable-classification", "name": "Applicable classification", "description": "Retain the applicable SDS and distinguish established classifications from unresolved ignition and toxicological details.", "questions": [ { "text": "Which current SDS establishes the hazard classification for this composition, supplied form and jurisdiction?", "kind": "provenance", "id": "applicable-classification-q01" }, { "text": "What evidence establishes methylsilane's spontaneous-ignition behaviour and applicable occupational exposure limits?", "kind": "provenance", "id": "applicable-classification-q02" } ] } ] }, { "id": "stability-and-contact", "name": "Stability and contact", "description": "Records conditions and contacts that may change methylsilane or make its use unacceptable.", "findings": [ { "id": "compatibility-boundaries", "name": "Compatibility boundaries", "description": "Require evidence for contact with air, moisture, oxidants and wetted materials, including relevant decomposition conditions.", "questions": [ { "text": "Which incompatible substances and material contacts are documented specifically for methylsilane?", "kind": "boundary", "id": "compatibility-boundaries-q01" }, { "text": "What recorded exposure or storage deviation requires reassessment before further use?", "kind": "action", "id": "compatibility-boundaries-q02" } ] } ] } ] }, { "id": "use-and-regulatory-eligibility", "name": "Use and regulatory eligibility", "description": "Connects substance evidence to an intended role and applicable restrictions.", "rationale": "Chemical identity and nominal purity alone do not establish fitness or permission for a particular use.", "layers": [ { "id": "application-fit", "name": "Application fit", "description": "Evaluates the material against a defined reagent or precursor requirement.", "findings": [ { "id": "qualified-material-role", "name": "Qualified material role", "description": "Link a proposed synthesis or deposition role to qualification evidence without importing reactor recipes or promising product composition.", "questions": [ { "text": "What application evidence supports selecting methylsilane for the intended reagent or precursor role?", "kind": "provenance", "id": "qualified-material-role-q01" }, { "text": "Which lot properties and impurity limits must pass before this material is eligible for that role?", "kind": "action", "id": "qualified-material-role-q02" } ] } ] }, { "id": "jurisdiction-and-supply", "name": "Jurisdiction and supply", "description": "Separates substance-wide requirements from restrictions attached to a supplied product.", "findings": [ { "id": "applicable-use-restrictions", "name": "Applicable use restrictions", "description": "Record dated inventory, transport and supplier restrictions with their jurisdiction and scope.", "questions": [ { "text": "Which inventory status, transport designation and use restrictions are verified for the relevant jurisdiction and supplied form?", "kind": "provenance", "id": "applicable-use-restrictions-q01" }, { "text": "Does an identified restriction apply to methylsilane generally or only to this supplier's product and declared use?", "kind": "boundary", "id": "applicable-use-restrictions-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 description is recalled knowledge; no sources were consulted.", "Verify the approximate boiling point, pyrophoric classification, and applicable handling requirements against authoritative substance records and a supplier safety data sheet.", "Purity grades, exposure limits, transport identifiers, and jurisdiction-specific regulatory classifications are not established here." ], "questions": [ { "id": "evidence-confidence-notes-q01", "text": "Which of these check these first hold for the sense of methylsilane 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": "992-94-9", "note": "Identifies methylsilane as a substance, rather than a particular commercial grade or mixture." }, { "scheme": "Molecular formula", "value_or_pattern": "CH6Si", "note": "The condensed structural formula CH3SiH3 explicitly shows the carbon-silicon bond." } ], "questions": [ { "id": "evidence-identifiers-q01", "text": "Which of these identifiers and schemes hold for the sense of methylsilane 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 Nations Globally Harmonized System of Classification and Labelling of Chemicals (GHS): framework for communicating chemical hazards; specific classifications require verification." ], "questions": [ { "id": "evidence-standards-and-regulation-q01", "text": "Which of these standards and regulation hold for the sense of methylsilane 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": [ "Precursor in chemical vapour deposition of silicon carbide and related silicon-carbon films.", "Starting material and model compound in organosilicon chemistry." ], "questions": [ { "id": "evidence-real-world-use-q01", "text": "Which of these real-world use hold for the sense of methylsilane 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", "typical_range": "46.14", "unit": "g/mol" }, { "quantity": "Normal boiling point", "typical_range": "Approximately -57", "unit": "°C" } ], "questions": [ { "id": "evidence-measurements-q01", "text": "Which of these typical measurements hold for the sense of methylsilane 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": [ "Highly flammable gas that can form ignitable mixtures with air.", "Pyrophoric behaviour presents a risk of spontaneous ignition on contact with air.", "Storage under pressure introduces cylinder rupture hazards when heated." ], "questions": [ { "id": "evidence-failure-modes-and-hazards-q01", "text": "Which of these failure modes and hazards hold for the sense of methylsilane 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": "silane", "difference": "Silane is SiH4; methylsilane replaces one of its hydrogen atoms with CH3." }, { "name": "dimethylsilane", "difference": "Dimethylsilane has two methyl groups attached to silicon, (CH3)2SiH2, whereas methylsilane has one." }, { "name": "methyltrichlorosilane", "difference": "Methyltrichlorosilane is CH3SiCl3, with three silicon-bound chlorine atoms instead of the three silicon-bound hydrogen atoms in methylsilane." } ], "questions": [ { "id": "evidence-neighbours-q01", "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of methylsilane this model covers, and on what evidence?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "What is the verified PubChem CID for methylsilane, distinguished from a PubChem Substance ID for a supplier record?", "Which primary measurements establish melting point, normal boiling point and vapour pressure, with uncertainty and applicable ranges?", "What methylsilane-specific evidence resolves spontaneous ignition, moisture reactivity and decomposition behaviour under relevant conditions?", "Which occupational exposure limits and current regulatory or transport classifications apply in the intended jurisdiction?", "Which application-specific impurity thresholds and qualification results support the proposed grade and precursor use?" ], "statistics": { "bundles": 6, "layers": 11, "findings": 17, "questions": 27 } }