← Back to catalogue
Published

crimidine

vr.tr.crimidine · thing-q2645488

Enable an agent to recognize crimidine, assess the identity and condition of a material containing it, and determine which handling or use decisions require further evidence.

Thing Registry Physical world and living systems PHY.MAT

Bundle → Layer → Finding → Questions Filled

7 bundles · 13 layers · 18 findings · 32 questions

Crimidine identity Establish which chemical entity the registry entry denotes.

Structural recognition

Recognize crimidine through connectivity and authoritative identifiers.

Identity concordance

Require agreement among the crimidine name, molecular structure, formula, and external identifiers.

  1. Which authoritative record connects CAS 535-89-7 and CID 10813 to the same molecular structure? provenance
  2. Does the supplied structure match crimidine's connectivity rather than merely its elemental formula? definition

Names and material boundaries

Separate substance synonyms from product labels and similarly spelled chemicals.

Name resolution

Resolve ambiguous names without creating additional registry entities or equating products with pure substance.

  1. Does a Castrix or other historical label identify crimidine itself or a preparation containing it? boundary
  2. What identifier evidence excludes a spelling confusion with crinamidine? definition
Crimidine material quality Characterize the composition and evidential quality of a particular material lot.

Assay and impurities

Record how much crimidine is present and what else accompanies it.

Composition basis

Distinguish quantified crimidine content from label claims and chromatographic area percentages.

  1. What crimidine mass fraction was measured, by which method and on what reporting basis? measurement
  2. Which impurities, residual solvents, or degradation products were assessed, and which remain uncharacterized? measurement

Analytical confidence

Connect identification and quantification to traceable evidence.

Reference and method fit

Evaluate whether the analytical method and reference material support the intended crimidine determination.

  1. Which lot-specific certificate or reference spectrum supports the identification? provenance
  2. Does the method distinguish crimidine from interfering compounds in this sample matrix? measurement
  3. Is the evidence sufficient for the proposed use, or is confirmatory analysis required? action
Crimidine physical behavior Represent physical properties as conditional measurements.

Phase and thermal properties

Track physical state and thermal transitions without losing pressure context.

Conditional thermal values

CAMEO reports melting near 87 °C and boiling at 140-147 °C under 4 mmHg, citing historical data; retain those qualifications. [NOAA CAMEO](https://m.cameochemicals.noaa.gov/chemical/4930)

  1. What purity, method, and uncertainty support the reported crimidine melting range? measurement
  2. Was a boiling value measured under reduced pressure, and was decomposition assessed? measurement

Distribution between media

Assess dissolution, volatility, and partitioning through explicit conditions.

Medium-dependent properties

Keep measured and estimated properties distinct, including solvent, pH, temperature, and complete units.

  1. What measured aqueous solubility is available for crimidine at a stated pH and temperature? measurement
  2. Are vapor-pressure and partitioning values experimentally supported and reported with sufficient conditions to compare them? provenance
Crimidine stability Connect chemical integrity to storage conditions and incompatible contacts.

Chemical compatibility

Identify evidence relevant to contact materials and thermal exposure.

Incompatibility evidence

CAMEO flags acids and heating to decomposition; distinguish crimidine-specific observations from reactive-group predictions. [NOAA CAMEO](https://m.cameochemicals.noaa.gov/chemical/4930)

  1. Which reported incompatibilities are demonstrated for crimidine rather than inferred from chemical-group membership? provenance
  2. Does the proposed contact or storage condition require specialist compatibility review? action

Integrity over time

Evaluate the condition of a lot through its history and current analysis.

Storage and retest

Treat storage specifications and retest periods as evidence tied to a material form and supplier record.

  1. What temperature, moisture, light exposure, and container history are documented for this crimidine lot? provenance
  2. What analytical change or storage excursion would require quarantine or reassessment? action
Crimidine hazard evidence Organize toxicity evidence, formal classifications, and exposure benchmarks.

Toxicological endpoints

Separate observed adverse effects from proposed mechanisms and extrapolations.

Acute neurotoxicity

CAMEO identifies severe acute toxicity and convulsions; endpoint records must preserve route, species, and source. [NOAA CAMEO](https://m.cameochemicals.noaa.gov/chemical/4930)

  1. Which studies support crimidine's acute neurological effects for each exposure route? provenance
  2. Which mechanistic claims have direct experimental support, and which remain interpretations? definition

Classification and benchmarks

Keep formal hazard classifications separate from exposure criteria.

Applicable hazard record

Use dated, jurisdiction-specific evidence and retain unknown values instead of inferring classifications.

  1. Which current GHS classification applies to this crimidine material in the relevant jurisdiction? provenance
  2. Is each cited concentration criterion an occupational limit, emergency planning value, or another benchmark? boundary
  3. Which unresolved exposure or classification issue prevents the proposed handling decision? action
Crimidine regulatory context Connect substance identity to current permissions and lifecycle obligations.

Use status

Distinguish historical function from current legal status.

Historical use and current authority

CAMEO describes crimidine as a rodenticide; its U.S. nonregistration statement cites 1998 and needs current verification. [NOAA CAMEO](https://m.cameochemicals.noaa.gov/chemical/4930)

  1. What current authority establishes the status of the proposed crimidine activity in the relevant jurisdiction? provenance
  2. Does the record concern the active substance, a particular formulated product, or a specific permitted use? boundary

Transfer and end of life

Link material-specific circumstances to transport, reporting, and disposal requirements.

Activity-specific obligations

Determine applicable obligations from actual composition, quantity, physical form, location, and current authoritative records.

  1. Which verified EC identifier, transport classification, and reporting records apply to this crimidine material? provenance
  2. What authorized transfer or waste-management route applies to this lot or crimidine-containing residue? 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.

  1. Which of these check these first hold for the sense of crimidine this model covers, and on what evidence? provenance

Identifiers and schemes

Recalled without web access and unsourced; every item is a lead to verify.

  1. Which of these identifiers and schemes hold for the sense of crimidine this model covers, and on what evidence? provenance

Real-world use

Recalled without web access and unsourced; every item is a lead to verify.

  1. Which of these real-world use hold for the sense of crimidine this model covers, and on what evidence? provenance

Typical measurements

Recalled without web access and unsourced; every item is a lead to verify.

  1. Which of these typical measurements hold for the sense of crimidine 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.

  1. Which of these failure modes and hazards hold for the sense of crimidine 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.

  1. Which of these neighbouring kinds and how to tell them apart hold for the sense of crimidine 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

Crimidine is a synthetic, chlorine-containing pyrimidine compound historically used as an acute rodenticide whose toxicity involves antagonism of vitamin B6 function and can cause severe convulsions.

In scope

  • Chemical identity and identifiers distinguishing crimidine from similarly named substances
  • Purity, impurities, analytical confirmation, and reference-material status
  • Physical state and measured properties with temperature, pressure, and method
  • Stability, incompatibilities, and evidence of degradation
  • Toxicological evidence and applicable hazard classifications
  • Substance-level regulatory identity and links to authorized activities

Out of scope

  • Commercial rodenticide formulations, bait composition, and product performance
  • Manufacturing routes and synthesis procedures
  • Pest-control campaigns and application instructions
  • Clinical diagnosis and treatment of poisoning
  • Facility-wide emergency plans and waste-treatment processes

Why it exists Filled

Enable an agent to recognize crimidine, assess the identity and condition of a material containing it, and determine which handling or use decisions require further evidence.

Distinguishing features Filled

  • Require agreement between the proposed substance identity and CAS 535-89-7, PubChem CID 10813, and molecular formula C7H10ClN3. [PubChem](https://pubchem.ncbi.nlm.nih.gov/compound/Crimidine)
  • Check molecular connectivity against 2-chloro-4-(dimethylamino)-6-methylpyrimidine; a matching formula alone cannot establish identity. [NOAA CAMEO](https://m.cameochemicals.noaa.gov/chemical/4930)
  • Distinguish crimidine from crinamidine, which has formula C17H19NO5 and PubChem CID 399204. [PubChem: Crinamidine](https://pubchem.ncbi.nlm.nih.gov/compound/Crinamidine)
  • Treat a trade name such as Castrix as an identification lead requiring composition evidence, rather than proof that a product is pure crimidine. [NOAA CAMEO](https://m.cameochemicals.noaa.gov/chemical/4930)

What robots and AI may and may not do Filled

Must not

  • Assist in obtaining, making or using crimidine, including against people or pets.
  • Recommend it for pest control where it is banned or unregistered.
  • Advise treating suspected poisoning at home instead of seeking emergency care.
  • Provide quantities or methods that could be used to poison someone.

Only with a human decision

  • Any decision on pest control using acutely toxic rodenticides.

May

  • Explain crimidine as a historical rodenticide and its regulatory status, from official sources.
  • Point people to poison control and emergency services in case of exposure.

Moral aspects Filled

  • Acute rodenticides poison children, pets and wildlife as well as rodents.
  • Poisons have been misused to harm people.

Who is affected

  • Children and pets
  • Wildlife
  • Pest control workers

Owners Filled

Steward

The holder of a lawful stock; pesticide regulators control registration and use.

Master systems

  • National pesticide registers

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.crimidine
  • Wikidata: Q2645488 (https://www.wikidata.org/wiki/Q2645488)

Direct properties required Filled

  • Molecular identity: C7H10ClN3; CAS 535-89-7; PubChem CID 10813
  • Crimidine assay: Mass fraction or % w/w, with analytical method, uncertainty, and dry or as-received basis
  • Material role: Neat substance; technical material; analytical standard; constituent of a linked mixture; unknown
  • Observed physical state: Phase, appearance, temperature in °C, and pressure in kPa
  • Melting behavior: °C; onset and range, method, sample purity, and decomposition observation
  • Boiling behavior: °C paired with pressure in kPa or mmHg and decomposition status
  • Solubility and partitioning: Solubility in mg/L or g/L with solvent, pH, and temperature; dimensionless log Kow or log D with method
  • Degradation status: Unassessed; within documented specification; suspected degradation; confirmed degradation
  • Hazard classification: GHS jurisdiction, hazard class and category, statement codes, source, and revision date; unresolved where unverified
  • Exposure benchmark: mg/m³ or ppm with benchmark type, averaging period, authority, and date; unknown where unsupported
  • Regulatory applicability: Jurisdiction, authority, legal record, regulated activity, material form, effective date, and verification status

Recognition required Filled

  • Identified by container label, chemical name and identifier, and certificate of analysis rather than by appearance alone.

Capabilities and actions required Filled

  • Reconcile a crimidine label against structural identifiers and analytical evidence.
  • Assess whether a material lot meets a documented analytical or research specification.
  • Compare physical-property reports while preserving purity and measurement conditions.
  • Flag unresolved hazards, incompatibilities, or degradation before a handling decision.
  • Check proposed acquisition, storage, transfer, or disposal against current jurisdiction-specific requirements.
  • Link crimidine-containing products and samples to this substance identity without merging their distinct compositions.

Hazards and failure modes required Filled

  • Severe convulsions and death from poisoning.
  • Secondary poisoning of predators and scavengers.
  • Accidental exposure of children and pets.

Standards and interfaces required Filled

  • Globally Harmonized System of Classification and Labelling of Chemicals (GHS), United Nations.

Context of use required Filled

  • Crimidine is encountered in historical rodenticide literature, chemical reference collections and records of obsolete pesticide products.
  • Its identity matters when assessing legacy materials, environmental contamination or suspected poisoning involving an older rodenticide.

Sources Filled

  1. Wikidata item Q2645488: crimidine - identity and sense of the item
  2. Wikipedia: Crimidine - general description of the item

Open questions

  • Which authoritative sources confirm crimidine's EC number and current jurisdiction-specific GHS classifications?
  • Which primary measurements establish melting behavior, pressure-qualified boiling behavior, aqueous solubility, and vapor pressure with adequate purity and method information?
  • What experimental evidence establishes crimidine's toxicological mechanism, route-specific effects, and any applicable occupational exposure limits?
  • What validated storage periods, degradation markers, and analytical acceptance criteria distinguish usable material from compromised lots?
  • What current jurisdiction-specific records settle pesticide authorization, transport classification, reporting obligations, and disposal requirements?

Machine files

Provenance

thing registry research (pass 2) · unreviewed

Built from: models/things/publications/thing-q2645488/spec.json