Analysis of Specific Aromatic Amines Formed From Azo Dyes and Pigments

Reductive cleavage of azo radicals from azo dyes and azo pigments comprising azo radicals (-N=N-) can form aromatic amines that are suspected carcinogens. Of these aromatic amines, 22 are designated as specific aromatic amines in Europe (EN 14362:2003) and 24 in China (GB/T 17592-2006), and the use of azo dyes and pigments that form these specific aromatic amines are regulated. The total ion current chromatogram (TIC) obtained from using GC-MS to measure a standard sample of the specific aromatic amines is shown here.