165660-27-5

165660-27-5 structure

Name: hydroxy naphthol blue
Chemical Name: Hydroxy Naphthol Blue, disodium salt, pure
CAS Number: 165660-27-5
Molecular Formula: C₂₀H₁₂N₂Na₂O₁₁S₃
Molecular Weight: 598.491
Catalog: Chemical reagent Organic reagent Polycyclic compound
Create Date: 2018-08-09 11:03:30
Modify Date: 2024-01-02 23:26:28
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].

Name	Hydroxy Naphthol Blue, disodium salt, pure
Synonyms	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

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.

Molecular Formula	C₂₀H₁₂N₂Na₂O₁₁S₃
Molecular Weight	598.491
Exact Mass	597.939880
PSA	259.09000
LogP	6.11690
Appearance	Small Powder \| Small dark blue to black
Storage condition	Store at room temperature.

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