chemical substance
Let an agent handle chemical substances by identity, properties, hazards, regulation and safe handling, without facilitating harmful uses.
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.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent handle chemical substances by identity, properties, hazards, regulation and safe handling, without facilitating harmful uses.
A form of matter with constant chemical composition and characteristic properties, such as an element or compound, identified by name, formula and registry numbers, and regulated for safe production, transport and use.
What it is for: Chemistry, industry, products and safety regulation.
It can be identify substances by name, CAS number and formula; read safety data sheets; check regulatory status; store and dispose of chemicals safely.
Distinguishing features
Defined composition
Characteristic properties
Registered and classified
Hazards communicated by labels
What it looks like
Solids, liquids or gases with characteristic properties; usually in labelled containers.
How it is recognised
CAS numbers and hazard pictograms
Safety data sheets
Mixtures contain several substances
Related models
is a kind of - category
is identified by - identifier
is described by - document
is regulated by - regulation
In practice
Families and kinds
elements
compounds
substances of very high concern
natural and synthetic substances
mixtures (related)
Identifiers
CAS Registry Number numeric substances
EC number xxx-xxx-x EU inventory
Standards and regulation
EU REACH Regulation 1907/2006
EU CLP Regulation 1272/2008
UN GHS
Failure modes and hazards
Mixing incompatible chemicals
Poisoning from unlabelled containers
Facilitating harmful synthesis
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Identity Which substance.
Identifiers disambiguate.
Names
Identifiers.
Names
Identifiers.
- What are its name, formula and CAS number? provenance
- Are synonyms causing confusion? boundary
Properties
Data.
Properties
Properties.
- What are its key physical and chemical properties? measurement
- From which database? provenance
Hazards Safety.
Hazards must be known.
SDS
Safety data sheet.
SDS
Safety data sheet.
- What hazards and precautions does the safety data sheet list? provenance
- Which pictograms apply? definition
Exposure
Poisoning.
Exposure
Exposure.
- Has someone been exposed or swallowed the substance? boundary
- Which poison centre or emergency number should be called? action
Regulation Law.
Substances are regulated.
Status
Registration.
Status
Regulatory status.
- Is it registered, restricted or authorised under REACH or equivalent? provenance
- Is it a substance of very high concern? provenance
Transport
Dangerous goods.
Transport
Transport rules.
- Is it classified as dangerous goods for transport? provenance
- What UN number applies? provenance
Handling Use and disposal.
Safe handling protects people.
Storage
Compatibility.
Storage
Storage.
- How should it be stored, and what must it be kept away from? provenance
- Is ventilation needed? boundary
Limits
No harmful uses.
Limits
Harmful use limits.
- Does the request seek to make or use a substance to cause harm? boundary
- How should the agent decline? action
What the second pass must settle
- Should substance classes be separate entries?
- How should registry data be linked?
- How should restricted substances be flagged?