https://schema.org/ChemicalSubstance
A chemical substance is 'a portion of matter of constant composition, composed of molecular entities of the same type or of different types' (source: [ChEBI:59999](https://www.ebi.ac.uk/chebi/searchId.do?chebiId=59999)).
Instances of schema:ChemicalSubstance can have the following properties:
| PROPERTY | TYPE | DESCRIPTION | RANGE |
|---|
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix schema: <https://schema.org/> .
schema:ChemicalSubstance a rdfs:Class ;
rdfs:label "ChemicalSubstance" ;
rdfs:comment "A chemical substance is 'a portion of matter of constant composition, composed of molecular entities of the same type or of different types' (source: [ChEBI:59999](https://www.ebi.ac.uk/chebi/searchId.do?chebiId=59999))." ;
rdfs:subClassOf schema:BioChemEntity ;
schema:isPartOf <https://pending.schema.org> ;
schema:source <http://bioschemas.org>,
<https://www.ebi.ac.uk/chebi/searchId.do?chebiId=59999> .