G. Voss, S. Eichner
Feb 1, 2000
Citations
0
Influential Citations
2
Citations
Journal
Journal Fur Praktische Chemie-chemiker-zeitung
Abstract
Recently, Chlorindazone DS 1 has become an important analytical reagent for the detection of gunshot residues from newly introduced ammunition. A simplified synthesis of the precursor of the azo dye 1, 3-amino-6-chloroindazole (2), from commercially available 2,4-dichlorobenzonitrile (3a) has been described. The physical and spectroscopical properties of the known compounds 1 and 2 have been completed. 2-Chloro-4-hydrazinobenzonitrile (4a), 2-bromo-4-hydrazinobenzonitrile (4b) and a new azo dye, 1-(3′-chloro-4′-cyanobenzene-1′-ylazo)-2-hydroxynaphthalene-3,6-disulfonic acid, disodium salt (5), have been investigated.