What is ISO 16373?

ISO 16373 is a multi-part international standard titled:

“Textiles — Dyestuffs”

It provides analytical methods to determine the presence of certain hazardous colorants in dyed textile materials. The standard consists of three parts:

  1. ISO 16373-1:2015 – General method for extraction and detection
  2. ISO 16373-2:2014 – Detection of certain azo colorants in dyed textiles
  3. ISO 16373-3:2022 – Method for determination of arylamines derived from azo colorants

These parts provide testing procedures for identifying substances such as:

  1. Banned azo dyes (which can break down into carcinogenic arylamines)
  2. Certain arylamines regulated by REACH, OEKO-TEX®, and other market-specific regulations


Why is ISO 16373 important?

Hazardous dyes and arylamines can pose serious health risks, including carcinogenic effects. Many markets—including the EU, USA, Japan, and China—have strict limits or bans on certain dyes.

Without proper testing and documentation, textile businesses risk:

❌ Product recalls

❌ Fines and regulatory actions

❌ Loss of buyer trust

❌ Brand damage

ISO 16373 provides standardized test methods to identify and quantify restricted colorants, helping you ensure compliance with chemical safety regulations and buyer specifications.

What are the benefits of ISO 16373?

Implementing ISO 16373 ensures thorough, reliable testing of dye-related substances in your textiles:

🧪 Accurate Detection of Restricted Colorants

Detects banned azo dyes and arylamines with validated procedures.

🔬 Laboratory-Proven Testing Methods

Standardized for repeatable, reproducible results across accredited labs.

🧼 Supports Safer, Non-toxic Textile Production

Promotes the use of compliant, environmentally safer dyes and chemicals.

🧾 Documentation for Regulatory Audits

Essential for REACH, OEKO-TEX®, GOTS, and other certifications.

🌍 Global Trade Compliance

Enables export of dyed textiles to regions with strict chemical safety laws.


What kind of businesses can benefit from ISO 16373?

By adopting ISO 16373 with GMC’s professional support, your business can:

Ensure Compliance with Global Regulations

Meet EU REACH, OEKO-TEX®, CPSIA, and other buyer-specific requirements.

Reduce Risk of Rejection and Recalls

Avoid costly product failures, fines, or delays in customs clearance.

Strengthen Customer and Brand Trust

Demonstrate chemical safety and responsible sourcing.

Improve Supply Chain Transparency

Verify dyes and chemicals used by vendors and dye-houses.

Support Sustainability and Eco-Certifications

Lay the groundwork for achieving GOTS, Bluesign®, and ZDHC conformance.

Gain Competitive Edge in Textile Exports

Market your products as tested, compliant, and globally acceptable.


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