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85-85-8 - 1-(2-Pyridylazo)-2-naphthol, 98% - PAN - A17475 - Alfa Aesar

A17475 1-(2-Pyridylazo)-2-naphthol, 98%

CAS Number
85-85-8
Synonyms
PAN

Size Price ($) Quantity Availability
1g 18.80
5g 60.90
25g 222.00
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1-(2-Pyridylazo)-2-naphthol, 98%

MDL
MFCD00004071
EINECS
201-637-9

Chemical Properties

Formula
C15H11N3O
Formula Weight
249.27
Melting point
138-141°
Solubility
Insoluble in water.

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.

Notes

Incompatible with strong bases and strong oxidizing agents.

Literature References

Indicator for complexometry.

Reagent for spectrophotometric determination of metals.

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 aluminium(III) ions. Sens. Actuators, B 2015, 209, 15-24.

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.

GHS Hazard and Precautionary Statements

Hazard Statements: H315-H319-H335

Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Precautionary Statements: P261-P280-P305+P351+P338-P304+P340-P362-P312-P321-P405-P403+P233-P501a

Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Take off contaminated clothing and wash before reuse. Call a POISON CENTER or doctor/physician if you feel unwell. Specific treatment (see label). Store locked up. Store in a well-ventilated place. Keep container tightly closed. Dispose of contents/container in accordance with local/regional/national/international regulations.

Other References

Beilstein
206390
Harmonized Tariff Code
2933.39
TSCA
Yes

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