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Chemical structure of Hydroxy naphthol blue disodium

GC67465

Hydroxy naphthol blue disodium

Also known as disodium;3-hydroxy-4-[(2-hydroxy-4-sulfonaphthalen-1-yl)diazenyl]naphthalene-2,7-disulfonate

Hydroxy naphthol blue disodium, an azo dye, is a metal indicator for calcium and a colorimetric reagent for alkaline earth metal ions ( Λmax = 650 nm)· In the pH range between 12 and 13, the solution of the indicator is reddish pink in the presence of calcium ion and to deep blue in the presence of disodium EDTA

ChemicalCAS165660-27-5MW598.49FormulaC20H12N2Na2O11S3
CAS number
165660-27-5
Molecular weight
598.49
Formula
C20H12N2Na2O11S3
InChIKey
WPDDXLRAJOPBIR-UHFFFAOYSA-L
Catalogue number
GC67465
Brand
GLPBIO
Computed properties PubChem CID 3282630 · TPSA 259 Ų · H-bond donors 3 · H-bond acceptors 13
TPSA
259 Ų
H-bond donors
3
H-bond acceptors
13
Rotatable bonds
5
Heavy atoms
38

SMILES C1=CC=C2C(=C1)C(=CC(=C2N=NC3=C4C=CC(=CC4=CC(=C3O)S(=O)(=O)[O-])S(=O)(=O)[O-])O)S(=O)(=O)O.[Na+].[Na+]

Computed descriptors from PubChem (CID 3282630), public domain. Identity cross-checked against the supplier's molecular formula and weight — verify before use.

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