ethanol
Enable an agent to recognise ethanol-bearing material, assess its composition and condition, and determine which handling or use decisions its evidence supports.
Bundle → Layer → Finding → Questions Filled
5 bundles · 10 layers · 10 findings · 20 questions
Ethanol identity Establish what the material is and whether the ethanol model is the appropriate model to apply.
Molecular identification
Separate a name or label assertion from evidence for ethanol's molecular identity.
Evidence for ethanol identity
Record the identity claim, analytical support and unresolved alternatives without treating appearance as confirmation.
- What evidence establishes CH3CH2OH rather than methanol, isopropanol or another solvent? definition
- Which sample and lot were examined, and can the method distinguish the plausible alternative identities? provenance
Material boundary
Determine whether the subject is ethanol material or a formulated product whose ethanol component is being described.
Substance, mixture or product
Preserve the distinction between ethanol identity and the identity of the complete material.
- Is the subject ethanol, an ethanol-water mixture, denatured ethanol or a formulated product containing ethanol? boundary
- Which composition and performance claims belong to a linked product model rather than this ethanol model? boundary
Composition and purity Describe ethanol, water and other constituents with enough precision to support a material decision.
Ethanol and water balance
Record measured strength and water content on explicit, comparable bases.
Strength and dryness
Keep concentration, reference conditions and water measurements explicit rather than inferring them from a grade name.
- What are the ethanol and water contents, their reporting bases, methods and uncertainties? measurement
- If ethanol strength is reported by volume, what reference temperature applies and how were any conversions obtained? measurement
Non-ethanol constituents
Separate intentional additives from incidental impurities and unresolved composition.
Additives and contaminants
Record denaturants and relevant contaminants individually, including the limits of the available testing.
- Which denaturants or other additives were introduced, at what concentrations, and according to which records? provenance
- Which impurities, including methanol where relevant, were measured, and what detection limits or untested constituents constrain interpretation? measurement
Condition and change Assess the current material and whether its composition may have changed since it was characterised.
Observed material state
Relate physical observations to temperature, pressure and declared composition.
Consistency of observed state
Use physical observations to identify discrepancies requiring investigation without treating them as a substitute for chemical analysis.
- What phase, clarity, colour, solids or separation are observed at the recorded temperature and pressure? measurement
- Do observations conflict with the declared ethanol composition sufficiently to require sampling or a hold on use? action
Exposure-driven change
Track events that can make historical concentration or purity evidence unreliable.
Potential composition drift
Connect opening, transfer, heating and recovery events to possible losses, water exchange and contamination.
- Since the last representative analysis, was the material opened, heated, transferred, exposed to moisture or recovered from a process? provenance
- What evidence or new measurements are needed to determine whether the earlier ethanol, water and impurity results still apply? action
Handling and transformation Connect ethanol composition and operating conditions to proposed physical or chemical actions.
Transfer and heating
Identify the material evidence needed for handling actions involving evaporation and potential ignition.
Handling envelope
Link composition-specific safety information to the proposed operating conditions and external equipment assessment.
- Which safety data and measured properties apply to this ethanol concentration and additive composition? provenance
- For the proposed transfer or heating, have vapour generation, ignition sources and contact-material compatibility been assessed in the relevant process or equipment model? action
Dilution and mixing
Specify what must be known before changing ethanol concentration or combining the material with other substances.
Controlled composition change
Record the target composition, input evidence and verification method without assuming mixed liquid volumes are additive.
- What target ethanol concentration and reporting basis are required, and what measured input compositions support the calculation? measurement
- How will mixing compatibility, temperature change, volume non-additivity and final concentration verification be addressed? action
Grade and use evidence Determine what a lot's provenance and demonstrated properties support for a specified use.
Lot and grade claims
Connect supplier declarations and certificates to the material actually held.
Traceable grade evidence
Record the claimed grade, its defining specification and the chain linking evidence to the current lot.
- What exact specification defines the claimed ethanol grade, and which requirements are supported by lot-specific results? definition
- Can the supplier lot, certificate, sampled material and any subsequent subdivision or blending be linked without an unresolved gap? provenance
Intended-use disposition
Evaluate a proposed use against composition, condition and evidence limits.
Supported use decision
Make the disposition explicit for a particular use, retaining unmet requirements and unresolved evidence.
- Which ethanol-strength, water, impurity and additive requirements apply to the proposed use, and which remain unmet or unverified? boundary
- Does the evidence support release for that use, further testing, reprocessing assessment or rejection? action
Classifiers Filled
- Family
- Thing Registry
- Category
- Physical world and living systems
- Entry kind
- thing
- Plane
- PHY
- Domain
- PHY.MAT
- Other names and narrower kinds
- rectified spirit, denatured alcohol, Rödsprit
What it is Filled
This model owns ethanol identity and the composition, physical state, provenance and use-relevant condition of a particular ethanol material or lot, distinguishing the chemical substance from mixtures and products containing it.
In scope
- Identification of ethanol and evidence distinguishing it from other alcohols or solvents
- Ethanol concentration, water content, impurities and intentional additives
- Physical state and condition under recorded temperature, pressure and exposure
- Lot provenance, grade claims and supporting analytical evidence
- Material suitability and constraints for a specified handling or use context
Out of scope
- Complete formulations and performance models for beverages, fuels, disinfectants or other ethanol-containing products
- Fermentation, distillation and synthesis process design
- Human intoxication, diagnosis and treatment
- Container, ventilation and fire-protection equipment design
- Jurisdictional licensing, taxation and transport classification systems
Why it exists Filled
Enable an agent to recognise ethanol-bearing material, assess its composition and condition, and determine which handling or use decisions its evidence supports.
Distinguishing features Filled
- Establish the CH3CH2OH molecular identity; elemental composition alone cannot distinguish ethanol from its structural isomer dimethyl ether.
- Use analytical evidence capable of distinguishing ethanol from methanol and isopropanol; appearance and smell do not establish identity or purity.
- Distinguish ethanol material from an ethanol-containing formulation by recording its full known composition and intended material designation.
- Distinguish denatured from undenatured ethanol through additive records and relevant analytical evidence; ethanol concentration alone cannot establish that distinction.
- Distinguish a nominally anhydrous grade from water-bearing ethanol through measured water content and the applicable grade specification.
What robots and AI may and may not do Filled
Must not
- Supply ethanol to minors where law forbids it or serve alcohol to intoxicated people.
- Pass denatured or industrial ethanol off as fit for drinking.
- Handle ethanol near open flames or ignition sources.
- Help evade alcohol tax or licensing.
Only with a human decision
- Releasing ethanol for drinks, medicine or fuel blending.
- Disposing of large quantities.
May
- Report ethanol grade, concentration and origin of a lot from its documentation.
- Store and handle ethanol following fire and labelling rules.
Moral aspects Filled
- Alcohol harms health and families, while ethanol also serves medicine and fuel.
- Counterfeit spirits with toxic alcohols have killed many people.
Who is affected
- Drinkers
- Workers handling it
- Families
Owners Filled
Steward
The holder of the lot; excise and safety authorities license its production and sale.
Master systems
- Excise warehouse registers
Links to other meta-models Filled
parent
- Q11685431 - registry parent class
- Q378871 - registry parent class
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.ethanol
- Wikidata: Q153 (https://www.wikidata.org/wiki/Q153)
Direct properties required Filled
- Chemical identity: Ethanol confirmed | ethanol provisionally identified | identity unresolved | identity contradicted
- Ethanol content: Mass fraction, volume fraction at a stated reference temperature, or amount fraction; include method and uncertainty
- Water content: Mass fraction or mg/kg, with analytical method and sampling date
- Impurity profile: Concentrations of named impurities with units, detection limits and unmeasured analytes identified
- Denaturation status: Denatured | declared undenatured | unknown; identify additives and supporting evidence
- Physical condition: Observed phase, clarity, colour, visible solids and phase separation at stated conditions
- Material temperature: °C with measurement time and location
- Lot and evidence linkage: Material lot linked to supplier, sample, certificate, test result and transfer history
- Exposure history: Sealed | opened | transferred | recovered | exposure unknown, with dated events
- Use-specific disposition: Material linked to a proposed use and specification with supported | conditional | unsupported | rejected status
Recognition required Filled
- Pure ethanol is a clear, colorless liquid whose appearance does not distinguish it from water or several other solvents.
- A container label naming ethanol and stating its concentration supports identification, although appearance alone cannot establish composition.
Capabilities and actions required Filled
- Request identity, concentration, water or impurity testing targeted to an unresolved decision.
- Compare a lot's measured composition with an explicit use specification.
- Calculate a proposed dilution using a declared concentration basis and a validated conversion method where needed.
- Identify whether opening, transfer or recovery requires renewed sampling before use.
- Route material for use, further assessment, reprocessing or disposal through the applicable process models.
- Flag proposed heating, transfer or mixing for assessment against composition-specific handling evidence.
Hazards and failure modes required Filled
- Its flammable liquid and vapor can cause fires and serious burns.
- Exposure can irritate the eyes and impair alertness or coordination.
- Ingestion can cause poisoning, especially when the material contains denaturants or other contaminants.
- Mistaking an ethanol-containing mixture for a verified disinfectant can leave contamination uncontrolled.
Standards and interfaces required Filled
- The Globally Harmonized System of Classification and Labelling of Chemicals, published by the United Nations, provides criteria for communicating ethanol's chemical hazards.
- Regulation (EC) No 1272/2008, adopted by the European Parliament and Council of the European Union, governs classification, labelling and packaging of ethanol supplied within its scope.
Context of use required Filled
- Ethanol is encountered as a solvent, fuel component and ingredient in alcoholic beverages.
- It is also used in laboratory work and disinfectant formulations, where concentration and other ingredients determine suitability.
Sources Filled
- Wikidata item Q153: ethanol - identity and sense of the item
- Wikipedia: Ethanol - general description of the item
Open questions
- Does the existing Vercy catalogue already contain an authoritative ethanol or ethyl-alcohol model that this registry entry should reference?
- Where should the registry draw the boundary between ethanol material, aqueous ethanol grades and separately registered formulated products?
- Which authoritative specifications and analytical methods should govern the initial supported ethanol grades and use contexts?
- What evidence is sufficient to establish the absence of relevant denaturants or contaminants when supplier declarations are incomplete?
- What sampling and reassessment criteria should apply after opening, transfer, blending or recovery for each supported use?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q153/spec.json