Overview
EN ISO 16373-3:2014 - "Textiles - Dyestuffs - Part 3" specifies a laboratory method for the detection and quantitative determination of certain carcinogenic dyestuffs in dyed, printed or coated textile products. The method uses an extraction step with a triethylamine/methanol solvent followed by chromatographic analysis (HPLC with diode-array detection or mass spectrometry). This standard was adopted by CEN and published in 2014 to support regulatory compliance and safety testing of textile articles.
Key topics and technical requirements
- Scope: Detection and quantification of the dyestuffs listed in Table 1 of the standard (examples include C.I. Basic Red 9, C.I. Disperse Orange 11, C.I. Disperse Yellow 3, C.I. Acid Red 114).
- Principle: Ultrasonic-assisted extraction of dye from textile matrix using triethylamine/methanol, followed by analysis by HPLC‑DAD or HPLC‑MSD.
- Apparatus & conditions: Describes required equipment such as an ultrasonic bath (heated to 50 ± 5 °C; typical output and frequency specified), coil condenser, rotary evaporator, volumetric glassware and an HPLC system.
- Reagents: Lists analytical-grade solvents (methanol, acetonitrile, hexane), 0.25% triethylamine in methanol, and a 10 mmol/L ammonium acetate aqueous solution. Procedures for preparing standard solutions and calibration curves are included.
- Procedure elements: Test specimen sampling and preparation, extraction, chromatographic separation, detection, identification and quantification, and instructions for reporting results.
- Safety: Explicit warnings that targeted dyestuffs are known or suspected carcinogens; mandates appropriate health & safety and waste-disposal practices.
- Supporting material: Annex A covers chromatographic analysis details; Annex B provides round-robin test results (interlaboratory data).
Applications and users
- Who uses it: Textile testing laboratories, manufacturers and dye formulators, quality assurance teams, importers/retailers, regulatory bodies, and compliance/forensic laboratories.
- Practical uses:
- Compliance testing against national and international restrictions on carcinogenic dyestuffs.
- Incoming quality control and supplier verification.
- Investigations of consumer complaints or suspected non‑compliant products.
- Supporting declarations for market access in jurisdictions that regulate hazardous dyestuffs.
Related standards
- ISO 16373-1 - General principles for dyestuff testing and identification.
- ISO 16373-2 - Complementary extraction method using pyridine-water for a broader range of extractable dyestuffs (including allergenic and carcinogenic dyes).
By following EN ISO 16373-3:2014 laboratories obtain a reproducible, validated procedure for extracting and quantifying specific carcinogenic colorants in textiles, helping ensure product safety and regulatory compliance.