Overview
ISO 105-C09:2001/Amd 1:2003 is an international standard published by ISO that specifies updated procedures for testing the colour fastness of textiles to domestic and commercial laundering. This amendment introduces detailed methods for assessing fabric resistance to oxidative bleach using non-phosphate reference detergents with low temperature bleach activators. The standard focuses on maintaining textile colour integrity when exposed to modern laundering chemicals designed for environmental safety, such as phosphate-free detergents and bleach activators effective at lower temperatures.
Key Topics
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Colour Fastness Testing
This standard defines procedures to evaluate the durability of textile colours after being laundered with specific bleach systems. These tests are essential in ensuring fabric quality and consumer satisfaction through colour retention.
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Non-Phosphate Reference Detergents
ISO 105-C09 Amendment 1 specifies the use of ECE non-phosphate reference detergent and AATCC 1993 zero phosphate reference detergent without optical brighteners. These detergents reflect sustainable chemical formulations aligned with environmental regulations.
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Low Temperature Bleach Activators
The standard incorporates bleach activators like tetra-acetylethylenediamine (TAED) and sodium nonanoyloxybenzene sulfonate (SNOBS/NOBS) designed to allow effective bleaching at lower temperatures (around 60°C), reducing energy consumption in laundering while preserving textile colour.
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Oxidative Bleach Response
A key focus is measuring textiles’ response to oxidative bleaching processes, reflecting real-world washing conditions and ensuring robust colourfastness under commercial and domestic laundering cycles.
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Detailed Test Procedures
The document describes preparation of wash liquors, temperature control, treatment durations, rinsing, drying, conditioning, and assessment using grey scales or instrumental methods to quantify colour change precisely.
Applications
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Textile Manufacturing
Enables manufacturers to verify that their fabrics maintain colour quality after bleaching with modern, eco-friendly detergents, ensuring product consistency and compliance with purchasers’ specifications.
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Quality Control in Laundries
Commercial laundries can apply these testing methods to evaluate fabric tolerance and modify washing protocols to minimize colour damage during processing.
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Research and Development
Supports development of new detergent formulations and bleaching agents by providing a standardized assessment method, facilitating innovation in sustainable textile care products.
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Regulatory Compliance
Assists organizations in meeting international standards related to textiles’ chemical resistance and environmental stewardship by focusing on phosphate-free detergent systems.
Related Standards
- ISO 105-A02, ISO 105-A05 – Methods for assessing colour change and staining, supporting colour fastness evaluation.
- ISO 105-J01, ISO 105-J03 – Additional tests related to colour fastness to washing and laundering conditions.
- AATCC Test Methods – Complementary standards from the American Association of Textile Chemists and Colorists for reference detergents and laundering procedures.
- ISO 105-C06 – Tests for colour fastness to domestic and commercial laundering without bleaching agents, providing a baseline for fabric performance.
Keywords: ISO 105-C09, colour fastness, textile testing, laundering tests, oxidative bleach response, non-phosphate detergent, bleach activator, TAED, SNOBS, sodium perborate, textile quality control, sustainable detergents, fabric colour retention, low temperature bleaching.