CHEBI:87028 - litmus

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ChEBI Name litmus
Definition A water soluble mixture of different dyes extracted from various species of lichens particularly Variolaria, Lecanora and Rocella. Consists chiefly of azolitmin and erythrolitmin combined with alkalis. Used as an acid-base indicator pH 4.5 red, 8.3 blue.
Stars This entity has been manually annotated by the ChEBI Team.
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Roles Classification
Biological Role(s): lichen metabolite
Any metabolite that is produced during a metabolite reaction in lichens (composite organisms consisting of a fungus and a photosynthetic partner co-existing in a symbiotic relationship).
Application(s): acid-base indicator
An acid or base which exhibits a colour change on neutralization by the basic or acidic titrant at or near the equivalence point of a titration.
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ChEBI Ontology
Outgoing litmus (CHEBI:87028) has role acid-base indicator (CHEBI:50407)
litmus (CHEBI:87028) has role lichen metabolite (CHEBI:78361)
litmus (CHEBI:87028) is a mixture (CHEBI:60004)
Synonyms Sources
Lackmus ChemIDplus
Tornasol ChemIDplus
Tournesol ChemIDplus
Manual Xref Database
Litmus Wikipedia
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Registry Number Type Source
1393-92-6 CAS Registry Number ChemIDplus
Last Modified
21 July 2015