We have described the synthesis of some novel 1:2 Fe complexed azo dyes and compared their properties with 1:2 Cr and 1:2 Co commercial analogs. We also report the interesting FAB mass spectroscopy analysis of 1:2 metallized azo dyes resulting in the formation of 1:1 complexed dyes and their unmetallized precursors. Results from light- and rubbing-fastness evaluations of these 1:2 Fe metallized dyes show the black dyes to be strong candidates for use on wool and nylon in applications requiring high lightfastness.
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