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Hydroxynaphthol blue

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Hydroxynaphthol blue
Names
Other names Hydroxynaphthol blue
Identifiers
CAS Number
3D model (JSmol)
ECHA InfoCard 100.058.343 Edit this at Wikidata
PubChem CID
CompTox Dashboard (EPA)
SMILES
  • O=S(C(C=C4)=CC1=C4C(/N=N/C2=C3C(C=CC=C3)=C(S(=O)(O)=O)C=C2O)=C(O)C(S(=O)(O)=O)=C1)(O)=O
Properties
Chemical formula C20H11N2Na3O11S3
Molar mass 620.46301 g/mol
Appearance Black-violet Powder
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). checkY verify (what is  ?) Infobox references
Chemical compound

Hydroxynaphthol blue is an azo dye. It is used for determining the endpoint in metal complexation titrations.


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