Hydroxynaphthol blue

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Hydroxynaphthol blue
Other names Hydroxynaphthol blue
Identifiers
CAS number [63451-35-4]
PubChem 9576626
SMILES O=S(C(C=C4)=CC1=C4C(/N=N/C2=C3C(C=CC=C3)=C(S(=O)(O[Na])=O)C=C2O)=C(O)C(S(=O)(O[Na])=O)=C1)(O[Na])=O
Properties
Molecular formula C20H11N2Na3O11S3
Molar mass 620.46301 g/mol
Appearance Black-violet Powder
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)

Infobox disclaimer and references

Hydroxynaphthol blue is an azo dye.