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82960

Sigma-Aldrich

1-(2-Pyridylazo)-2-naphthol

for spectrophotometric det. of metal ions, ≥97.0%

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Synonym(s):
PAN
Empirical Formula (Hill Notation):
C15H11N3O
CAS Number:
85-85-8
Molecular Weight:
249.27
Beilstein:
206390
EC Number:
201-637-9
MDL number:
MFCD00004071
PubChem Substance ID:
329769273

Assay

≥97.0% (HPLC)
≥97.0%

quality

for spectrophotometric det. of metal ions

technique(s)

UV/Vis spectroscopy: suitable
titration: suitable

color

green to red, upon chelation with metal
 orange-red, as an amorphous solid
 yellow, when dissolved in organic solvent

mp

138-141 °C (lit.)
138-141 °C

SMILES string

Oc1ccc2ccccc2c1\N=N\c3ccccn3

InChI

1S/C15H11N3O/c19-13-9-8-11-5-1-2-6-12(11)15(13)18-17-14-7-3-4-10-16-14/h1-10,19H/b18-17+

InChI key

LLYOXZQVOKALCD-ISLYRVAYSA-N

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Other Notes

Indicator in complexometry; reagent for the extraction and spectrophotometric determination of many transition metals

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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K.L. Cheng et al. et al.
Handbook of Organic Analytical Reagents null
Dengqing Zhang et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 90, 35-39 (2012-02-07)
A copper (II) complex of azo-dye (Cu-1) has been synthesized by the reaction of 1-(2-pyridylazo)-2-naphthol (1) with copper (II) chloride. The complex Cu-1 is able to selectively sense hydrogen sulfide over other anions followed by the release of compound 1
László Szabó et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 93, 266-273 (2012-04-10)
The development of surface-enhanced Raman scattering (SERS) as a prospective analytical methodology for detection of metal ions was shown in recent years by several studies on metal complexes. In this work, 1-(2-pyridylazo)-2-naphthol (PAN) and its Al(III), Mn(II), Fe(III), Cu(II), Zn(II)
Alireza Mohadesi et al.
The Analyst, 135(7), 1686-1690 (2010-05-12)
The present work is focused on the modification of multiwalled carbon nanotubes with a ligand, 1-(2-pyridylazo)-2-naphthol (PAN), and its potential application for the development of a new, simple and selective modified glassy carbon electrode for stripping voltammetric determination of Pb(II).
Mohammad Ali Taher
Annali di chimica, 94(5-6), 437-446 (2004-07-29)
A highly selective, sensitive, rapid and economical differential pulse polarographic method has been developed for the determination of trace amount of lead in various samples after adsorption of its 1-(2-pyridylazo)-2-naphthol (PAN) on naphthalene in the pH range of 8.4 -
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