cas 1147-56-4, 1-(2-Thiazolylazo)-2-naphthol | Articles data ｜lookchem

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1147-56-4

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Formation of azolo [1,2,4]triazinium salts by reaction of heterocyclic-substituted 1-azo-naphthalen-2-ols with strong acids
By reaction of heterocyclic-substituted 1-azo-naphth-2-ols with the Vilsmeier reagent or with strong acids polycyclic azolo[1,2,4]triazinium salts are formed in good yields. The azolo[1,2,4] triazinium salts exhibit similar UV/Vis absorption properties as the starting azo compounds, but in contrast to those the fluorescence appears in the visible range.
Yu, Xiuling,Hartmann, Horst
p. 501 - 508
(2014/06/10)

Thiazolylazo Dyes as Reagents for Detection and Ring Colorimetric Determination of Copper
Five thiazolylazo dyes namely 5-(2-thiazolylazo)-2,4-dihydroxybenzoic acid, 2-(2-thiazolylazo)-p-cresol, 1-(2-thiazolylazo)-2-naphthol, 4-(2-thiazolylazo)phloroglucinol and 4-(2-thiazolylazo)resorcinol have been found to be suitable reagents for the detection colorimetric determination of copper by ring oven technique. 1-(2-Thiazolylazo)-2-naphthol (TAN) has been found to be the most sensitive reagent.
Gandhi, M. H.,Pathak, K. C.,Parikh, D. J.,Lahiri, S. A.
p. 499 - 500
(2007/10/02)

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Chemical Properties

Appearance/Colour :powder
Melting Point: 138-139 °C
Boiling Point: 464.8 °C at 760 mmHg
Flash Point:234.9 °C
Density: 1.4 g/cm³
Solubility:methanol: 10 mg/mL, clear
Storage Temp.:2-8°C
Vapor Pressure: 0mmHg at 25°C
Refractive Index: 1.728
PKA: 8.71±0.50(Predicted)
BRN: 223783
PSA: 86.08000
LogP: 4.41730

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