Amine Identification
Technical protocols determine if a textile material contains prohibited arylamines that can be absorbed through the skin. The use of en 14362 azo testing provides a verified route to confirm that no banned azo dyes were used during the coloration process. This method applies to both natural and synthetic fibres, though the extraction techniques vary based on the substrate.
Substrate Preparation
Technicians cut the fabric into small pieces and subject them to a reductive environment to split the chemical bonds of the dye. For polyester and other synthetics, en 14362 azo testing may require an additional extraction step using an organic solvent to reach the dye trapped inside the polymer matrix. The resulting solution is then concentrated and injected into a chromatograph for separation.
This step is required for ensuring that the test captures all potential contaminants regardless of how they are bonded to the fibre.
Quantification Limit
The lab calculates the mass of each amine found and compares it to the legal threshold of 30 milligrams per kilogram. A fail result triggers a mandatory recall or a stop-shipment order for the affected goods.
Supply Integrity
Brands rely on these standardized tests to manage their restricted substance lists and maintain legal access to global markets. Regular testing of random samples from production batches prevents the accidental use of non-compliant chemicals in the factory.
