sarin
Enable an agent to identify records and samples attributed to sarin, assess evidence about their condition and hazards, and route decisions to authorised chemical-safety personnel.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
recalled by Codex without web access - no source was read
Researched by: Codex
Purpose and description
Enable an agent to identify records and samples attributed to sarin, assess evidence about their condition and hazards, and route decisions to authorised chemical-safety personnel.
Sarin is a synthetic organophosphorus compound, also designated GB, that acts as a highly toxic nerve agent by inhibiting acetylcholinesterase and causing excessive cholinergic stimulation.
It can be Resolve sarin names and identifiers against verified chemical identity sources.; Assess whether evidence supports suspected, presumptive or confirmed sarin identification.; Compare sample results while preserving differences in matrix, method, uncertainty and reporting limits.; Flag missing evidence and route suspected presence or exposure to qualified emergency and chemical-safety personnel.; Check proposed custody, transfer or disposition against documented authorisations and applicable controls.; Maintain traceable links between the substance, samples, contaminated entities and professional clearance decisions..
Distinguishing features
An identity record must resolve specifically to sarin; a generic nerve-agent or organophosphorus classification is insufficient.
An alias such as GB must be resolved in its chemical context rather than accepted as a unique identifier by itself.
A class-level detector alert must remain distinguishable from evidence that specifically identifies sarin.
A formulation, environmental sample or contaminated article containing sarin must be represented as a related entity rather than equated with the pure substance.
Evidence of degradation products must remain distinguishable from confirmation that intact sarin is currently present.
Scope
+ Sarin identity, synonyms, identifiers and distinctions from other nerve agents
+ Sample composition, purity, stereochemical characterisation and identity confidence
+ Physical state and measured properties with conditions and uncertainty
+ Hazard characterisation and evidence of presence, contamination or degradation
+ Jurisdiction-specific controls, custody and authorised disposition status
- Synthesis routes, precursors, production equipment and process optimisation
- Weapon design, dissemination methods and operational employment
- Clinical diagnosis, treatment protocols and patient records
- Design and operation of analytical instruments
- Incident command, site remediation procedures and waste-treatment process design
Characteristics
- Chemical identity and registry crosswalk
- vr.tr.sarin linked to source-verified chemical names, structure and applicable CAS, PubChem and EC records Prevents confusion between sarin, related agents and ambiguously labelled records.
- Identity assessment
- reported | presumptive | confirmed | contradicted | unresolved, with evidence and assessment date Keeps the strength of identification separate from the seriousness of a suspected hazard.
- Composition and purity
- Mass fraction or amount fraction with method, uncertainty, sample matrix and sampling time Distinguishes substance identity from the composition of a particular sample.
- Stereochemical characterisation
- uncharacterised | characterised, with reported stereoisomer composition and supporting evidence Prevents unsupported assumptions that samples sharing a name are compositionally equivalent.
- Physical phase
- solid | liquid | vapour | mixed | unknown, with temperature in °C and pressure in kPa Makes statements about physical condition interpretable under their actual conditions.
- Physical-property evidence
- Reported melting and boiling temperatures in °C, density in kg/m³ and vapour pressure in Pa, each with conditions and source Supports identification and professional hazard interpretation without treating reference values as sample measurements.
- Sample concentration
- Matrix-appropriate units such as mg/m³ or mg/L, with sampling interval, uncertainty and reporting limit Makes analytical results comparable only where matrix, units and sampling basis permit.
- Hazard classification
- Source-attributed health and environmental classifications, with classification system, jurisdiction and revision date Supports evidence-based restrictions without assuming that classifications are identical across systems.
- Degradation assessment
- not assessed | intact sarin detected | degradation indicated | mixed evidence | unresolved Prevents disappearance of a parent-compound signal from being interpreted automatically as absence of hazard.
- Regulatory and custody status
- Applicable legal instruments, competent authority, custodian, authorisations and dated disposition records Connects proposed actions to the authority and evidence required to permit them.
Also called
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 6 bundles · 11 layers · 19 findings · 31 questions.
Sarin identity Defines which chemical entity the registry entry denotes and how identification claims are supported.
Sarin must remain distinguishable from related nerve agents, ambiguous aliases and broad detector classifications.
Chemical reference
Connects the registry entry to verified chemical identity records.
Identity anchor
Record the chemical identity to which sarin names and external identifiers resolve.
- Which authoritative chemical record establishes the structure and preferred identity represented by vr.tr.sarin? definition
- Which sources verify the CAS number, PubChem CID, any applicable EC number and the alias GB? provenance
Identification confidence
Separates reported presence from evidence specific enough to establish sarin identity.
Specificity of evidence
Preserve the scope and limitations of each identification claim.
- Does the evidence identify sarin specifically, a broader agent class or only an unspecified hazardous substance? boundary
- Which laboratory report, method validation and sample-custody records support the assigned identification status? provenance
Sample composition and state Describes the material attributed to sarin without confusing a sample with the chemical entity.
Purity, matrix, stereochemical composition and physical conditions determine what a sample record actually establishes.
Composition boundary
Distinguishes sarin itself from mixtures and environmental matrices containing it.
Sample constituents
Record measured sarin content, other reported constituents and unresolved composition.
- Is this record about the chemical entity, a characterised sample, a mixture or contamination of another material? boundary
- What purity, sarin concentration and stereochemical composition were measured, and what remains uncharacterised? measurement
Conditioned properties
Attaches physical-property statements to their experimental or reference conditions.
Phase and property evidence
Keep sample observations distinct from literature values for sarin.
- What phase is reported at the recorded temperature and pressure, and is that phase observed or inferred? measurement
- Which sources and conditions support reported melting point, boiling point, density and vapour pressure? provenance
Health hazard and escalation Captures sarin hazard evidence and the boundaries of an agent's response authority.
An agent needs to recognise the significance of suspected sarin without turning a substance model into a clinical protocol.
Toxicological characterisation
Records authoritative descriptions of sarin's toxic action and exposure hazards.
Mechanism and classification
Require sourced evidence for toxicological mechanisms, routes of exposure and formal hazard labels.
- Which authoritative sources establish sarin's nerve-agent classification and cholinesterase-related toxic action? provenance
- Which health-hazard classifications apply, and under which classification system and revision? definition
Exposure evidence and response
Separates environmental findings, possible exposure and professional medical assessment.
Escalation boundary
Record when evidence requires professional escalation and which conclusions exceed the model's scope.
- Does the record establish environmental presence, possible human exposure or a clinician's assessment, and how are these distinguished? boundary
- Which established emergency procedure and competent service should receive a suspected sarin presence or exposure report? action
- If an exposure benchmark is cited, what authority, population and averaging period define its applicability? provenance
Environmental presence and transformation Tracks evidence of sarin in environmental media and changes in the sampled material over time.
A positive result, a non-detection and evidence of degradation establish different things about current contamination.
Presence in media
Relates analytical findings to the sampled air, water, surface or other matrix.
Bounded detection result
Make each detection or non-detection interpretable within its sampling and analytical limits.
- Which medium, location and sampling interval does the result represent? boundary
- What concentration, uncertainty, reporting limit and method limitations accompany the result? measurement
Transformation and clearance
Distinguishes chemical transformation evidence from a decision that a material or location is cleared.
Residual status
Preserve evidence about intact sarin, reported transformation products and unresolved residual hazards.
- What evidence supports persistence or transformation of sarin in this particular matrix and observation period? provenance
- Does a reported transformation product support a specific attribution to sarin, or are other origins unresolved? boundary
- Which competent authority and documented assessment support any clearance or authorised disposition decision? action
Legal control and custody Connects sarin records to applicable chemical-weapons controls and accountable custody.
Identity and hazard alone cannot establish whether possession, movement or disposition is authorised.
Applicable controls
Records the legal instruments and jurisdiction-specific requirements governing sarin.
Control basis
Anchor regulatory status in dated primary legal and authority records.
- Which Chemical Weapons Convention listing and domestic implementing provisions explicitly cover sarin? provenance
- What authorisation and competent-authority review are required for the proposed activity in the relevant jurisdiction? action
Custody and disposition
Maintains accountable links between a sarin-associated sample and its authorised custodian and final status.
Accountable material record
Track custody and disposition evidence without encoding handling or destruction procedures.
- Which records establish the sample's current custodian, identity continuity and authorised custody status? provenance
- What signed record establishes transfer, retention or completed disposition, and which authority accepted it? action
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.
Reported evidence
Findings from the breadth pass, kept separate from the structural claims.
Check these first
Recalled without web access and unsourced; every item is a lead to verify.
- This is recalled knowledge; no sources were consulted.
- Verify physical constants against an authoritative reference, including purity, pressure and measurement conditions.
- Check current jurisdiction-specific regulations, hazard classifications and exposure guidance before operational use of this record.
- Which of these check these first hold for the sense of sarin this model covers, and on what evidence? provenance
Kinds and varieties
Recalled without web access and unsourced; every item is a lead to verify.
- Two phosphorus-centred enantiomers with different biological potencies
- Racemic sarin containing both enantiomers
- Which of these kinds and varieties hold for the sense of sarin this model covers, and on what evidence? provenance
Identifiers and schemes
Recalled without web access and unsourced; every item is a lead to verify.
- CAS Registry Number - 107-44-8 - Identifies sarin without specifying an individual enantiomer.
- Molecular formula - C4H10FO2P - Describes elemental composition; does not uniquely identify molecular structure.
- Chemical nomenclature - Propan-2-yl methylphosphonofluoridate - Also called isopropyl methylphosphonofluoridate.
- Military chemical-agent designation - GB - An agent designation, not a purity grade.
- Which of these identifiers and schemes hold for the sense of sarin this model covers, and on what evidence? provenance
Standards and regulation
Recalled without web access and unsourced; every item is a lead to verify.
- Chemical Weapons Convention, implemented by States Parties and verified by the Organisation for the Prohibition of Chemical Weapons: sarin is a Schedule 1 chemical, with activities confined to tightly restricted permitted purposes.
- Which of these standards and regulation hold for the sense of sarin this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Historical use as a chemical warfare agent.
- Documented use in terrorist attacks.
- Strictly controlled research supporting detection, protection and medical countermeasures.
- Which of these real-world use hold for the sense of sarin this model covers, and on what evidence? provenance
Typical measurements
Recalled without web access and unsourced; every item is a lead to verify.
- Molar mass - Approximately 140.09 - g/mol
- Melting point of pure substance - Approximately -56 - °C
- Boiling point at approximately standard atmospheric pressure - Approximately 158 - °C
- Which of these typical measurements hold for the sense of sarin this model covers, and on what evidence? provenance
Failure modes and hazards
Recalled without web access and unsourced; every item is a lead to verify.
- Extremely toxic through inhalation, skin absorption and ingestion.
- Acetylcholinesterase inhibition can cause excessive secretions, muscle dysfunction, seizures and fatal respiratory failure.
- Pure sarin is colourless and essentially odourless; sensory recognition is unreliable.
- Liquid can release hazardous vapour and contaminate contacted surfaces.
- Environmental persistence varies with temperature, moisture and surrounding materials; elapsed time alone does not establish safety.
- Which of these failure modes and hazards hold for the sense of sarin this model covers, and on what evidence? provenance
Regional variation
Recalled without web access and unsourced; every item is a lead to verify.
- Domestic licensing, reporting and enforcement provisions vary among jurisdictions implementing the Chemical Weapons Convention.
- Which of these regional variation hold for the sense of sarin this model covers, and on what evidence? provenance
Neighbouring kinds and how to tell them apart
Recalled without web access and unsourced; every item is a lead to verify.
- Organophosphorus nerve agent - The broader class; sarin is one specific molecular substance within it.
- Soman - A distinct nerve agent with a different ester group and additional stereochemical complexity.
- VX - A structurally distinct, sulfur-containing nerve agent that is substantially less volatile than sarin.
- Sarin-containing formulation - A mixture whose composition and purity must be specified separately from the identity of sarin itself.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of sarin this model covers, and on what evidence? provenance
What the second pass must settle
- Does an existing Vercy world model already own sarin, requiring vr.tr.sarin to link to that publication rather than create a second source of truth?
- Which authoritative identity records and stereochemical conventions should anchor this entry, and which external identifiers are applicable?
- Which physical-property sources provide sufficiently documented conditions and uncertainty for inclusion?
- Which hazard classifications and exposure benchmarks are applicable in the target jurisdictions, and how should conflicting or absent values be represented?
- What validated evidence and competent-authority criteria distinguish presumptive identification, confirmed presence, historical contamination and clearance?