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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:
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 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

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

JAN Code

82960-VAR:
82960-1G:
82960-BULK:
82960-5G:

Certificates of Analysis (COA)

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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)
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
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).
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
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