Hydroxy naphthol blue (disodium) is an azo dye utilized primarily as an acid-base indicator, exhibiting a maximum absorbance at 650 nm. This compound demonstrates distinct color changes within the pH range of 12 to 13, appearing pale red in the presence of calcium ions and transitioning to dark blue upon interaction with disodium EDTA. It is valuable in biochemical assays and analytical chemistry for monitoring pH levels and ion concentrations.
Hydroxy naphthol blue (disodium) is an azo dye utilized primarily as an acid-base indicator, exhibiting a maximum absorbance at 650 nm. This compound demonstrates distinct color changes within the pH range of 12 to 13, appearing pale red in the presence of calcium ions and transitioning to dark blue upon interaction with disodium EDTA. It is valuable in biochemical assays and analytical chemistry for monitoring pH levels and ion concentrations.
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