Regulating and Testing for Azo Dyes
Azo dyes are synthetic dyes with which manufacturers treat certain textile and leather products to give them more vibrant colors. However, some types of these dyes degrade and produce aromatic amines, which have proven to be carcinogenic.
To avoid running afoul of the various consumer safety laws and industry regulations that restrict the use of Azo dyes in consumer products, manufacturers send samples of their design materials to testing labs like Applied Technical Services for analysis. We test client samples for these substances using a method called Gas Chromatography / Mass Spectroscopy (GC/MS).
About the Method
GC/MS is a destructive method of testing that yields information on the chemical composition of the analyte. ATS’ chemical analysis lab uses this method to isolate, identify, and measure compounds of interest if present in sample materials. ATS provides results at the parts-per-billion (ppb) level when performing this test — a far greater sensitivity than required by regulations on Azo dyes. We can achieve these low detection limits because of the sensitivity of ATS’ analytical equipment and our chemists’ experience in regularly performing the method to relevant standards.
Full List of Restricted Substances