alizarin blue

Term ID

CHEBI:87355

Synonyms

• 5,6-dihydroxynaphtho[2,3-f]quinoline-7,12-dione
• alizarin blue R
• C.I. 67410

Definition

An organic heterotetracyclic compound that is naphtho[2,3-f]quinoline-7,12-dione carrying two additional hydroxy groups at positions 5 and 6. Used as an acid-base indicator. Between pH 0.0 and pH 1.6 it changes from pink to yellow, and between pH 6.0 and pH 7.6 it changes from yellow to green.

References

• CAS:568-02-5
• Reaxys:275972

Ontology

ChEBI  ( EBI )