alkane
Let an agent handle alkanes by chain length, properties, uses, hazards and naming.
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 alkanes by chain length, properties, uses, hazards and naming.
A saturated acyclic hydrocarbon with the general formula CnH2n+2, such as methane, ethane, propane and butane; the main components of natural gas and many fuels.
What it is for: Fuels, solvents, waxes and chemical feedstocks.
It can be name alkanes by IUPAC rules; compare boiling points by chain length; check flammability and handling rules; identify uses as fuels or feedstocks.
Distinguishing features
Only single bonds
Relatively unreactive except in combustion
Boiling point rises with chain length
Straight and branched isomers
What it looks like
Gases for short chains, liquids for medium chains and waxy solids for long chains; colourless.
Physical character
methane boiling point: about -162 degC
state at room temperature: gas up to C4, liquid about C5-C17 - approximate
How it is recognised
General formula CnH2n+2
Names ending in -ane
Cycloalkanes have rings and a different formula
Related models
is a kind of - category
includes - members
is found in - source
is contrasted with - unsaturated
In practice
Families and kinds
gaseous alkanes
liquid alkanes
paraffin waxes
branched alkanes
isomers
Identifiers
CAS number per compound registry
IUPAC name systematic nomenclature
Standards and regulation
IUPAC nomenclature
CLP and GHS classification
ATEX rules for explosive atmospheres
Failure modes and hazards
Fire and explosion
Asphyxiation in enclosed spaces
Carbon monoxide from incomplete combustion
Also called
+127
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.
Structure Which alkane.
Chain length decides properties.
Name
IUPAC.
Name
Name and formula.
- What is the IUPAC name and formula? definition
- Is it straight-chain or branched? definition
Isomers
Branching.
Isomers
Isomers.
- How many isomers does this formula have? measurement
- How do their properties differ? definition
Properties Physical data.
Properties guide use.
Physical
Boiling point.
Physical
Physical properties.
- What are its boiling point and density? measurement
- From which data source? provenance
Reactivity
Combustion.
Reactivity
Reactivity.
- What does complete combustion produce? definition
- When does incomplete combustion occur? boundary
Safety Hazards.
Alkanes are flammable.
Fire
Flammability.
Fire
Fire hazard.
- What are its flash point and explosive limits? measurement
- What storage rules apply? provenance
Leaks
Gas leaks.
Leaks
Gas leaks.
- What should someone do if they smell gas? action
- Which emergency number applies? provenance
Uses Applications.
Uses depend on chain length.
Fuels
Gas and liquids.
Fuels
Fuel uses.
- Which fuel is this alkane part of? definition
- What is its energy content? measurement
Industry
Feedstocks.
Industry
Industrial uses.
- How is it used as a chemical feedstock or solvent? definition
- What alternatives exist? definition
What the second pass must settle
- Should each alkane be a separate entry?
- How should isomers be linked?
- How should fuel grades be linked?