ISO 105-C09:2001 PDF

Overview

ISO 105-C09:2001 is an international standard specifying test methods for assessing colour fastness of textiles to domestic and commercial laundering involving oxygen bleaching systems. The standard focuses on measuring the shade change in textiles (excluding silk and wool) subjected to laundering with a non-phosphate reference detergent containing a low temperature bleach activator. This method simulates real-life multicycle washing conditions that consumers typically use, providing reliable data on how fabrics respond to oxidative bleach during laundering. The test outcome helps manufacturers and quality controllers evaluate the durability of textile colours when exposed to bleaching detergents, ensuring consumer-relevant performance.

Key Topics

• Test Scope: Applies to varied textile forms, excluding silk and wool, with focus on oxidative bleach response using oxygen bleaching systems.
• Detergent Composition: Utilizes a 1998 formulation of ECE non-phosphate reference detergent, combined with sodium perborate tetrahydrate and the bleach activator tetra-acetylethylenediamine (TAED).
• Washing Procedure: Specimens are laundered at 60 °C with controlled temperature rises and agitation simulating domestic and commercial washing machines.
• Colour Change Assessment: Measured using grey scale rating (ISO 105-A02) or instrumental methods (ISO 105-A05, ISO 105-J01), with comparison to original fabric shade.
• Exclusions: The test does not assess dye staining of adjacent fabrics (covered in ISO 105-A04) or effects from optical brighteners commonly found in some commercial detergents.
• Test Apparatus: Defines use of mechanical laundering devices with specific container dimensions and rotation speeds.
• Reference Materials: Requires grade 3 water (ISO 3696 compliance), filter papers, and precise balances for accuracy.
• Procedure Details: Includes detailed reagent preparation, laundering, rinsing, drying, and final colour evaluation steps.

Applications

• Textile Manufacturing Quality Control: Producers can verify fabric and garment colour durability against bleaching detergents typically used by consumers and commercial launderers.
• Product Development: Helps develop more bleach-resistant dyes and textile treatments by evaluating shade retention after oxidative bleaching exposure.
• Compliance and Certification: Assists brands and suppliers in demonstrating compliance with international colour fastness standards, supporting market access and customer confidence.
• Laundry Detergent Testing: Enables detergent manufacturers to validate the impact of low temperature bleach activators in formulations on textile colour safety.
• Research and Innovation: Provides a reproducible testing framework for labs researching colour fastness and textile care chemistry.

Related Standards

• ISO 105-A01: General principles of colour fastness testing.
• ISO 105-A02: Grey scale for colour change assessment.
• ISO 105-A04: Methods for assessing staining of adjacent fabrics.
• ISO 105-A05: Instrumental methods for colour change determination.
• ISO 105-J01 and J03: Measurement and calculation of surface colour and colour differences.
• ISO 9696: Water specification for analytical laboratory use, relevant for test consistency.
• AATCC Zero Phosphate Reference Detergent: Alternative detergent formulation under development for similar testing purposes without optical brighteners.

Keywords: ISO 105-C09, colour fastness testing, textiles, oxidative bleach response, non-phosphate detergent, bleach activator, TAED, oxygen bleaching, domestic laundering, commercial laundering, shade change, textile durability, textile testing standards.