Date published: 2026-3-17

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Hydroxy naphthol blue disodium salt (CAS 165660-27-5)

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Application:
Hydroxy naphthol blue disodium salt is a dye useful in calcium determination
CAS Number:
165660-27-5
Molecular Weight:
598.49
Molecular Formula:
C20H12N2O11S32Na
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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A synthetic dye. Hydroxy naphthol blue disodium salt is a synthetic dye that has been used as a calcium indicator, which has a 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 deep blue in the presence of excess (Ethylenedinitrilo)tetraacetate


Hydroxy naphthol blue disodium salt (CAS 165660-27-5) References

  1. Colorimetric detection of loop-mediated isothermal amplification reaction by using hydroxy naphthol blue.  |  Goto, M., et al. 2009. Biotechniques. 46: 167-72. PMID: 19317660
  2. Preconcentration and Determination of Trace Nickel and Cobalt in Milk-Based Samples by Ultrasound-Assisted Cloud Point Extraction Coupled with Flame Atomic Absorption Spectrometry.  |  Temel, NK., et al. 2018. Biol Trace Elem Res. 186: 597-607. PMID: 29777525
  3. Insights into the influence of cell concentration in design and development of microbially induced calcium carbonate precipitation (MICP) process.  |  Murugan, R., et al. 2021. PLoS One. 16: e0254536. PMID: 34252152
  4. Influence of native ureolytic microbial community on biocementation potential of Sporosarcina pasteurii.  |  Murugan, R., et al. 2021. Sci Rep. 11: 20856. PMID: 34675302
  5. The determination of serum and urinary calcium levels with the use of 'hydroxy naphthol blue' as complexometric indicator.  |  Newfield, OE. 1967. Med J Aust. 1: 1257. PMID: 6027870

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

Hydroxy naphthol blue disodium salt, 10 g

sc-215156
10 g
$72.00

Hydroxy naphthol blue disodium salt, 100 g

sc-215156B
100 g
$228.00