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82960

Sigma-Aldrich

1-(2-Pyridylazo)-2-naphthol

for spectrophotometric det. of metal ions, ≥97.0%

Synonym(s):

PAN

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About This Item

Empirical Formula (Hill Notation):
C15H11N3O
CAS Number:
85-85-8
Molecular Weight:
249.27
Beilstein/REAXYS Number:
206390
EC Number:
201-637-9
MDL number:
MFCD00004071
UNSPSC Code:
12171500
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

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
WXBC3444V
WXBC2610V
WXBC2247V
BCBK4303V
WXBC0711V

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K.L. Cheng et al. et al.
Handbook of Organic Analytical Reagents null
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)
Mei Sun et al.
Journal of pharmaceutical and biomedical analysis, 60, 14-18 (2011-11-29)
A cloud point extraction (CPE) method for the preconcentration of ultra-trace chromium speciation in human serum samples prior to determination by graphite furnace atomic absorption spectrometry (GFAAS) had been developed in this paper. In this method, Cr(III) reacts with 1-(2-pyridylazo)-2-naphthol
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
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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