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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

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Certificates of Analysis (COA)

Lot/Batch Number
WXBC3444V
WXBC2610V
WXBC2247V
BCBK4303V
WXBC0711V

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Z. Holzbecher et al.
Handbook of Organic Reagents in Inorganic Analysis null
K.L. Cheng et al. et al.
Handbook of Organic Analytical Reagents null
Anderson S Souza et al.
Journal of hazardous materials, 141(3), 540-545 (2006-09-08)
An automatic on-line pre-concentration system is proposed for lead determination in drinking water using flame atomic absorption spectrometry (FAAS). Lead(II) ions are retained as the 1-(2-pyridylazo)-2-naphthol (PAN) complex in the walls of a knotted reactor, followed by an elution step
Shayesteh Dadfarnia et al.
Journal of hazardous materials, 173(1-3), 534-538 (2009-09-12)
A simple, highly sensitive and environment-friendly method for the determination of trace amount of nickel ion in different matrices is proposed. In the preconcentration step, the nickel from 10 mL of an aqueous solution was extracted into 500 microL of
Mahboubeh Shirani Bidabadi et al.
Journal of hazardous materials, 166(1), 291-296 (2009-01-02)
Solidified floating organic drop microextraction (SFODME), combined with graphite furnace atomic absorption spectrometry (GFAAS) was proposed for simultaneous separation/enrichment and determination of trace amounts of nickel and cobalt in surface waters and sea water. 1-(2-Pyridylazo)-2-naphthol (PAN) was used as chelating
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