einsteinium(III) iodide
Enable an AI agent to identify einsteinium(III) iodide, assess a specimen's chemical and radiological state, and determine whether evidence and authorization support a proposed use.
Bundle → Layer → Finding → Questions Filled
6 bundles · 11 layers · 15 findings · 25 questions
Chemical identity and boundaries Establish what qualifies as the registered substance and how it differs from neighboring chemical entities.
Formula and valence
Connect the substance name to its chemical identity.
EsI3 identity
Einsteinium triiodide is listed with formula EsI3. [WebElements](https://winter.group.shef.ac.uk/webelements/compounds/einsteinium/einsteinium_triiodide.html). Record specimen evidence supporting the +3 oxidation-state assignment and iodide stoichiometry.
- What evidence establishes einsteinium in oxidation state +3 in this specimen? measurement
- Does the measured I:Es ratio support EsI3 within stated uncertainty? measurement
Substance versus containing material
Separate the EsI3 substance from mixtures and identifiers with different chemical scope.
Identity boundary
Require evidence that einsteinium and iodide form the assigned substance; distinguish ionic stoichiometry from polyiodide terminology.
- Is EsI3 identified as a distinct phase, or is its presence inferred only from a mixture's ingredients? boundary
- Which verified identifiers denote this substance rather than elemental einsteinium, a solution, or a polyiodide species? provenance
Composition and isotope inventory Describe chemical purity and radioactive composition independently.
Chemical purity
Quantify the fraction attributable to EsI3 and identify competing species.
Impurity and phase accounting
Record measured impurities and detection limits without presuming a specific degradation product.
- What fractions are assigned to EsI3, other einsteinium species, excess iodine, or unidentified material? measurement
- Which analytical methods distinguish trace contamination from a separate phase? measurement
Nuclide accounting
Attach isotope composition and activity to a reference time.
Dated radioactive inventory
Require nuclide-resolved inventory and distinguish measured values from decay calculations.
- Which einsteinium isotopes and other radionuclides are present, in what amounts, and at what reference time? measurement
- Which evaluated nuclear data and inventory measurements support calculated activity or daughter ingrowth? provenance
Phase and property evidence Establish solid-state identity and the limits of reported physical properties.
Structural characterization
Assess phase assignments against specimen-specific observations.
Supported structure assignment
Record diffraction or other structural evidence and distinguish direct determination from analogy to related iodides.
- Which observations support the reported symmetry, lattice parameters, and phase purity of EsI3? measurement
- Which parts of the structure assignment were measured directly and which were inferred from related compounds? provenance
Conditional physical properties
Qualify thermal, optical, and bulk-property claims by their experimental conditions.
Property validity
Accept a property only with its method, conditions, uncertainty, and evidence that the tested material remained the assigned substance.
- Which EsI3 properties have direct measurements, and what specimen composition and conditions apply? measurement
- Does an observed thermal event indicate melting, decomposition, volatilization, or an unresolved combination? boundary
Specimen evolution Track whether environmental exposure or radioactive aging changes the material being assessed.
Environmental response
Record evidence of changes associated with temperature, atmosphere, or containment.
Condition-dependent integrity
Treat environmental sensitivity as a property to establish experimentally rather than inherit from generic halide behavior.
- What evidence establishes EsI3 stability under the recorded atmosphere, moisture exposure, and temperature? measurement
- Which observed changes require reidentifying the specimen before further use? action
Radioactive aging
Relate changing inventory to possible changes in phase or measured properties.
Age-dependent validity
Record specimen age and investigate contributions from daughter ingrowth, self-heating, or radiation damage without assuming their magnitude.
- What changes in composition or structure have been observed since the reference characterization? measurement
- What evidence determines when inventory recalculation or repeat chemical characterization is necessary? action
Use constraints and authorization Connect the assessed EsI3 specimen to documented constraints on proposed actions.
Chemical and radiological controls
Maintain separately supported assessments of chemical and radioactive hazards.
Applicable control evidence
Record verified classifications and specimen-specific controls; leave unavailable EsI3-specific toxicology or exposure limits explicitly unresolved.
- Which documented chemical classifications or exposure limits explicitly apply to EsI3 in the relevant jurisdiction? provenance
- Which radiological controls apply to this specimen's nuclides, activity, physical form, and containment? action
Fitness for proposed use
Determine whether the current evidence and authorization support the intended action.
Specimen use decision
Link characterization, storage, or transfer decisions to current composition, condition, and applicable institutional authorization.
- Does the specimen meet the intended measurement's requirements for phase purity, isotope composition, and stability? action
- Which current authorization and receiving-facility requirements govern the proposed use or transfer? action
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
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.
- Which of these check these first hold for the sense of einsteinium(III) iodide this model covers, and on what evidence? provenance
Identifiers and schemes
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these identifiers and schemes hold for the sense of einsteinium(III) iodide this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these real-world use hold for the sense of einsteinium(III) iodide 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.
- Which of these failure modes and hazards hold for the sense of einsteinium(III) iodide 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.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of einsteinium(III) iodide this model covers, and on what evidence? provenance
Classifiers Filled
- Family
- Thing Registry
- Category
- Physical world and living systems
- Entry kind
- thing
- Plane
- PHY
- Domain
- PHY.MAT
What it is Filled
Einsteinium(III) iodide is the binary inorganic compound EsI3, consisting formally of einsteinium in the +3 oxidation state and iodide in a 1:3 atomic ratio.
In scope
- EsI3 identity, einsteinium oxidation state, and iodide stoichiometry
- Chemical purity, isotope composition, and dated specimen inventory
- Solid-phase identification and evidence for structural assignments
- Measured properties with conditions, uncertainty, and specimen age
- Chemical and radiological condition relevant to authorized characterization, storage, and transfer
Out of scope
- Elemental einsteinium and its general nuclear-production model
- Other einsteinium halides and oxidation states as independent substances
- Solutions, formulations, or assemblies containing EsI3 as complete products
- Synthesis equipment and operational preparation procedures
- Facility radiation-protection programs and radioactive-waste infrastructure
Why it exists Filled
Enable an AI agent to identify einsteinium(III) iodide, assess a specimen's chemical and radiological state, and determine whether evidence and authorization support a proposed use.
Distinguishing features Filled
- Require identification of einsteinium and iodide together; iodine content alone cannot distinguish EsI3 from other iodide salts.
- Require evidence consistent with einsteinium in oxidation state +3 and an ideal I:Es ratio of 3:1; assess departures as possible impurities, mixed phases, or altered material.
- Distinguish the three iodide ions represented by EsI3 from an assignment of the polyiodide anion I3−.
- Distinguish an identified EsI3 phase from a mixture or solution that merely contains einsteinium and iodide.
- Use phase-sensitive evidence for identity; specimen color or emitted light alone is insufficient.
What robots and AI may and may not do Filled
Must not
- Handle or move radioactive samples outside licensed facilities.
- Assist in diverting radioactive material from regulatory control.
- Present tiny research quantities as a material available for any use.
- Dispose of any material outside radioactive waste systems.
Only with a human decision
- Any transfer, transport or disposal of radioactive material.
May
- Identify the compound from literature and analytical records, citing sources.
- Report the radiological hazards from official sources.
Moral aspects Filled
- Radioactive materials need strict control to protect workers and the public.
- Rare research materials are produced at great cost and must be accounted for.
Who is affected
- Laboratory workers
- The public near facilities
Owners Filled
Steward
The licensed laboratory that holds it; the national nuclear regulator oversees it.
Master systems
- National registers of radioactive sources and materials
Links to other meta-models Filled
parent
- Q11173 - registry parent class
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.einsteinium-iii-iodide
- Wikidata: Q82804 (https://www.wikidata.org/wiki/Q82804)
Direct properties required Filled
- Chemical identity: Einsteinium(III) iodide; EsI3; registry id vr.tr.einsteinium-iii-iodide
- Einsteinium oxidation-state assignment: +3 supported; mixed; unresolved, with method and confidence
- Iodine-to-einsteinium atomic ratio: Dimensionless molar ratio; ideal value 3, with uncertainty
- Chemical purity and phase fractions: Mass or mole fraction, explicitly identified basis, detection limits, and impurity identities
- Dated isotope inventory: Nuclide-specific atom fractions or masses with reference timestamp
- Activity inventory: Bq by radionuclide at a reference timestamp; measured or calculated with uncertainty
- Phase and structural assignment: Observed phase, symmetry assignment, lattice parameters in Å, method, temperature, and confidence
- Condition-dependent physical properties: Property-specific units, including K for transitions and g/cm³ for density, with pressure, method, and uncertainty
- Environmental and specimen history: Linked records of temperature, atmosphere, containment, elapsed time, and characterization
- Applicable identity and control records: Verified chemical identifiers, jurisdiction-specific classifications, and facility authorization records
Recognition required Filled
- Exists only in tiny research quantities, identified by radiometric and analytical data.
- Containers carry radiation warning labels.
Capabilities and actions required Filled
- Match a specimen to the registry entry using chemical and phase evidence.
- Compare published property claims while accounting for isotope composition, measurement conditions, and specimen age.
- Identify missing evidence that prevents a specimen from being accepted as sufficiently pure EsI3.
- Evaluate whether repeat characterization is needed after storage or a change in specimen condition.
- Check a proposed characterization, storage, or transfer against documented specimen-specific controls and authorization.
Hazards and failure modes required Filled
- Intense radioactivity causes self-heating and damage to the sample.
- Radiation exposure to workers.
- Contamination of equipment and work areas.
Standards and interfaces required Filled
- Regulations for the Safe Transport of Radioactive Material (SSR-6), International Atomic Energy Agency.
Context of use required Filled
- Einsteinium(III) iodide is encountered in specialist research on radioactive actinide compounds.
- Its study can support understanding of actinide bonding and solid-state behaviour, with work restricted by scarce material and radiological controls.
Sources Filled
- Wikidata item Q82804: einsteinium(III) iodide - identity and sense of the item
- Wikipedia: Einsteinium(III) iodide - general description of the item
Open questions
- Which primary studies establish EsI3 crystal structure, and how do isotope composition, specimen age, and uncertainty qualify their assignments?
- Which CAS, PubChem, or EC identifiers can be verified as referring specifically to einsteinium(III) iodide?
- Are melting, boiling, decomposition, density, and optical-property values directly measured for EsI3 or extrapolated from related compounds?
- What experimentally supported environmental-stability and radioactive-aging data define when an EsI3 specimen needs reassessment?
- Which EsI3-specific chemical hazard classifications and exposure limits exist, and which controls instead derive from its radionuclide inventory or broader regulatory categories?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q82804/spec.json