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Research draft

aldehydes

vr.tr.aldehydes · PHY.MAT

Let an agent handle aldehydes by structure, examples, reactions, uses and hazards, with identifiers and safety routing.

Thing Registry Physical world and living systems

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 aldehydes by structure, examples, reactions, uses and hazards, with identifiers and safety routing.

A class of organic compounds containing the formyl group, a carbonyl carbon bonded to hydrogen (-CHO), such as formaldehyde, acetaldehyde, benzaldehyde and vanillin, and biologically important ones such as pyridoxal; aldehydes oxidise to carboxylic acids and reduce to alcohols.

What it is for: Chemistry, industry, flavours and biology.

It can be recognise aldehyde structures; describe typical reactions and tests; find uses and identifiers; look up safety data.

Distinguishing features

Terminal carbonyl group

Reactive

Many fragrant compounds

Some are toxic or carcinogenic

What it looks like

Many are volatile liquids with sharp or fragrant smells; some are solids.

How it is recognised

Formyl group -CHO

Names ending in -al or -aldehyde

Ketones have the carbonyl between two carbons

Related models

is a kind of - category

carbonyl compound

includes - example

formaldehyde

is oxidised to - reaction

carboxylic acid

is related to - related class

dicarboxylic acid

In practice

Families and kinds

simple aliphatic aldehydes

aromatic aldehydes

unsaturated aldehydes

dialdehydes

biological aldehydes

Identifiers

ChEBI class aldehyde ontology class

Standards and regulation

GHS classification and safety data sheets

Occupational exposure limits for formaldehyde

EU REACH

Failure modes and hazards

Formaldehyde exposure and irritation

Flammability of volatile aldehydes

Sensitisation

Also called

fluoroacetaldehydeallysinepyridoxalpolyunsaturated aldehyde2-nonene-4,6,8-triynalmonounsaturated fatty aldehydeL-allysine zwitterionL-allysine1-hexadecanoyl-2-(7-oxoheptanoyl)-sn-glycero-3-phosphocholinePovpcpyridoxal(1+)caffeic aldehydepropynalnitrobenzaldehydefurfuralchloral hydratechloral12-oxo-cis-dodec-9-enoic acid12'-apo-carotenalelenolic acidCalostomalhydroxy aldehydebiogenic acyclic aldehydealiphatic aldehydemetaldehyde10-formyltetrahydropteroyl-ξ-glutamic acidbenzaldehyde3-phenylprop-2-enalarenecarbaldehyde(1R,2S)-2-(2,6-dimethoxy-4-pentylphenyl)-4-methyl-3-cyclohexene-1-carboxaldehyde7-deoxyloganetic aldehydephenolic aldehyde4-oxo-nonenal(E)-4-oxohex-2-enalOctadec-13-enal(2Z,4E)-2,4-Hexadienal(2Z,4Z)-2,4-Hexadienal(2E,6Z)-2,6-nonadienal10-undecenalpentadecanal

+218

Where this came from

wikidata · CC0 1.0

Source repository Registry entry point

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 Chemistry.

Structure defines the class.

Class

Membership.

Class

Class membership.

  1. Does this compound contain a terminal -CHO group? boundary
  2. How is it named systematically? provenance

Identifiers

Databases.

Identifiers

Identifiers.

  1. What are its CAS number and InChIKey? provenance
  2. Which database records it? provenance
Reactions Chemistry.

Aldehydes are reactive.

Redox

Oxidation and reduction.

Redox

Oxidation and reduction.

  1. What forms when this aldehyde is oxidised or reduced? definition
  2. Which reagents are typical in teaching labs? provenance

Tests

Identification tests.

Tests

Identification tests.

  1. How do Tollens or Fehling tests distinguish aldehydes from ketones? definition
  2. What safety precautions apply? provenance
Uses Applications.

Uses are broad.

Industry

Resins and chemicals.

Industry

Industrial uses.

  1. How is formaldehyde used in resins, and which rules limit emissions? provenance
  2. Which products may release it? provenance

Flavour

Flavours and fragrances.

Flavour

Flavours.

  1. Which aldehydes give flavours such as vanilla or almond? provenance
  2. Are they natural or synthetic? provenance
Safety Hazards.

Handle with care.

SDS

Safety data.

SDS

Safety data sheet.

  1. What hazards and protective equipment does the SDS list? provenance
  2. What exposure limits apply? provenance

Exposure

Poisoning.

Exposure

Exposure.

  1. Has someone inhaled, swallowed or splashed an aldehyde? boundary
  2. Should a poison centre or emergency services be contacted now? action

What the second pass must settle

  • Should each aldehyde be a separate entry?
  • How should identifiers be linked?
  • How should indoor air limits be tracked?
Draft as JSON