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Azo Dyes

Leading Manufacturer, Supplier & Retailer of Pan Indicator, Brilliant Cresyl Blue 65% and Brilliant Blue Fcf.

Pan Indicator

  • C.A.S. No. 85-85-8
  • M.F. C15H11N3O
  • M.W. 249.27gm/mole
  • Solubility 0.1 %(0.1N EtOH) Clear solution
  • Absorption Maximum (in EtOH) ?max 462-466nm
  • Absorptivity (A1%/1cm in EtOH, at ?max) >670
  • Loss on drying (110°C) <5%
  • Suitability as metal indicator Passes test
  • Chemical Name 1-(2-pyridylazo)-2-naphthol
  • InChI Key RAXUMGMWXZYADR-SDXDJHTJSA-N

Solubility

Soluble in acetone, alcohol, and dilute aqueous alkali. Insoluble in water. 33.3 mg soluble in 1 mL of methanol

 

1-(2-Pyridylazo)-2-naphthol (PAN), an orange colored dye, is commonly used as an acid-base indicator. It can form chelates with metal ions, which makes it a valuable indicator in complexometric titrations. 1-(2-Pyridylazo)-2-naphthol is an indicator in complexometry and a reagent for the extraction and spectrophotometric determination of many transition metals.

 

Applications:

The compound forms various colored metal chelates. The stability is greatly affected by the acidity. The alkali and alkaline earth metals do not form chelate with APN. The compound is used as an indicator in the complexometric titration of zinc, copper, cadmium, with EDTA. Amoung the metals reacting with the dye, most form reddish colored chelates.

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Brilliant Cresyl Blue 65%

  • C.A.S. No. 81029-05-2
  • M.F. C17H20CIN3O.1/2.ZnCl2
  • M.W. 385.96gm/mole
  • Dye Content (by Spectrophotometry) >65%
  • Solubility 0.1% (50% Etoh) Clear Blue Solution
  • Absorption Maximum (in 50% EtOH) ?max 625-630nm
  • Absorptivity (A1%/1cm,in 50% EtOH at ?max) >1600
  • Loss On Drying (110°C) <8%
  • Suitability for microscopy Passes test
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Brilliant Blue Fcf


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