1-(2-Pyridylazo)-2-naphthol, 98%, Thermo Scientific Chemicals
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1-(2-Pyridylazo)-2-naphthol, 98%, Thermo Scientific Chemicals
1-(2-Pyridylazo)-2-naphthol, 98%, Thermo Scientific Chemicals
1-(2-Pyridylazo)-2-naphthol, 98%, Thermo Scientific Chemicals
Thermo Scientific Chemicals

1-(2-Pyridylazo)-2-naphthol, 98%, Thermo Scientific Chemicals

CAS: 85-85-8 | C15H11N3O | 249.273 g/mol
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Quantity:
25 g
5 g
Catalog number ALFA17475.14
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Quantity:
25 g
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Chemical Identifiers
CAS75-15-0
IUPAC Namemethanedithione
Molecular FormulaCS2
InChI KeyQGJOPFRUJISHPQ-UHFFFAOYSA-N
SMILESS=C=S
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SpecificationsSpecification SheetSpecification Sheet
UVat 390 nm A: =<0.5
UVat 410 nm A: =<0.05
Appearance (Form)Clear liquid
GC>=99.85 %
Residue after evaporation=<0.0005 %
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1-(2-Pyridylazo)-2-naphthol is widely used as an indicator for complexometry. It is used as a reagent for the extraction and spectrophotometric determination (for colorimetric analysis) of many transition metal elements like arsenic, chromium, cobalt, copper, cadmium, manganese, zinc and zirconium. It is also used for the analysis of uranium and thorium in solutions.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Applications
1-(2-Pyridylazo)-2-naphthol is widely used as an indicator for complexometry. It is used as a reagent for the extraction and spectrophotometric determination (for colorimetric analysis) of many transition metal elements like arsenic, chromium, cobalt, copper, cadmium, manganese, zinc and zirconium. It is also used for the analysis of uranium and thorium in solutions.

Solubility
Insoluble in water.

Notes
Incompatible with strong bases and strong oxidizing agents.
RUO – Research Use Only

General References:

  1. Indicator for complexometry.
  2. Reagent for spectrophotometric determination of metals.
  3. Gupta, V. K.; Shoora, S. K.; Kumawat, L. K.; Jain, A. K. A highly selective colorimetric and turn-on fluorescent chemosensor based on 1-(2-pyridylazo)-2-naphthol for the detection of aluminum(III) ions. Sens. Actuators, B 2015, 209, 15-24.
  4. Pfeiffer, C. R.; Fowler, D. A.; Atwood, J. L. Selective Complexation in Three Component Cocrystals Composed of Pyrogallol[4]arene and Fluorescent Probes Pyrene and 1-(2-Pyridylazo)-2-naphthol. Cryst. Growth Des. 2015, 15 (8), 3992-3998.