hydroxy naphthol blue

Names

[ Name ]:
hydroxy naphthol blue

[Synonym ]:
MFCD00004075
Hydroxy Naphthol Blue
Disodium 3-hydroxy-4-[(E)-(2-hydroxy-6-sulfo-3-sulfonato-1-naphthyl)diazenyl]-1-naphthalenesulfonate
Hydroxynaphtholblue disodium salt
Hydroxy naphthol blue disodium salt
2,7-Naphthalenedisulfonic acid, 3-hydroxy-4-[(E)-2-(2-hydroxy-4-sulfo-1-naphthalenyl)diazenyl]-, sodium salt (1:2)
disodium,3-hydroxy-4-[2-(2-oxo-4-sulfonatonaphthalen-1-ylidene)hydrazinyl]-7-sulfonaphthalene-2-sulfonate

Biological Activity

[Description]:

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[1].

[Related Catalog]:

Research Areas >> Others

Signaling Pathways >> Others >> Others

[References]

[1]. Motoki Goto, et al. Colorimetric detection of loop-mediated isothermal amplification reaction by using hydroxy naphthol blue. Biotechniques. 2009 Mar;46(3):167-72.

Chemical & Physical Properties

[ Molecular Formula ]:
C₂₀H₁₂N₂Na₂O₁₁S₃

[ Molecular Weight ]:
598.491

[ Exact Mass ]:
597.939880

[ PSA ]:
259.09000

[ LogP ]:
6.11690

[ Appearance of Characters ]:
Small Powder | Small dark blue to black

[ Storage condition ]:
Store at room temperature.

MSDS

Click to get detail MSDS

Safety Information

[ Symbol ]:

GHS07

[ Signal Word ]:
Warning

[ Hazard Statements ]:
H319

[ Precautionary Statements ]:
P305 + P351 + P338

[ Hazard Codes ]:
Xi

[ Risk Phrases ]:
36/37/38

[ Safety Phrases ]:
24/25-36-26

[ RIDADR ]:
NONH for all modes of transport