ISO 105-X06-1994 PDF

Full title and description

ISO 105-X06:1994 — Textiles — Tests for colour fastness — Part X06: Colour fastness to soda boiling. Specifies a laboratory method for determining the resistance of textile colours (primarily cellulosic fibres) to the action of boiling sodium carbonate solutions, with and without a reduction inhibitor, by treating a composite specimen rolled around a glass rod and assessing colour change and staining against grey scales.

Abstract

This part of ISO 105 defines a standardized test procedure (soda‑boiling) to evaluate how textile dyes withstand boiling solutions of sodium carbonate. The method covers specimen preparation, reagent composition, test conditions (with options for inhibitor use), rinsing/drying, and visual assessment using established grey scales for change in colour and staining of adjacent undyed fabrics. It is intended primarily for natural and regenerated cellulosic materials and for use in quality control, research and comparative testing.

General information

• Status: Published (1994) — consult ISO or your national standards body for the formal current status and any national adoptions.
• Publication date: 25 August 1994 (1994-08-25).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 59.080.01 — Textiles.
• Edition / version: ISO 105-X06:1994 (1994 edition).
• Number of pages: 3 (concise test method document).

Scope

Defines a laboratory test for assessing the resistance of textile colours to boiling sodium carbonate solutions. The procedure covers specimen assembly (sandwiching test specimen between undyed fabrics), treatment in boiling sodium carbonate solution with or without a reduction inhibitor, post‑treatment rinsing and drying, and evaluation of colour change and staining using grey scales. The method is mainly applicable to natural and regenerated cellulose fibres but may be referenced for other materials where relevant.

Key topics and requirements

• Test specimen preparation: composite assembly and orientation around a glass rod.
• Reagents and concentrations: preparation of sodium carbonate solution and optional reduction inhibitor.
• Controlled test conditions: boiling time, temperature control, and mechanical treatment details.
• Rinsing, drying and conditioning procedures before assessment.
• Assessment criteria: grey scales for change in colour and staining of adjacent undyed cloths; reporting of results.
• Applicability notes: primarily for cellulosic fibres and guidance on interpretation and limitations.

Typical use and users

Used by textile testing laboratories, dye houses, fabric and garment manufacturers, quality assurance teams, research institutions and certification bodies to evaluate the soda‑boiling fastness of dyes. Typical applications include pre‑production testing, quality control of dyed textiles, comparative studies of dye performance, and verification of supplier claims for cellulosic products.

Related standards

Other parts of the ISO 105 series (colour fastness test methods) such as ISO 105-C06 (colour fastness to washing), ISO 105-X04 (mercerizing), ISO 105-X05 (organic solvents), and adjacent X‑series parts that address specific chemical and mechanical processes. National/adopted versions (for example EN or national bodies’ adoptions) and related AATCC or BS test methods for colour fastness and laundering may also be referenced depending on region and application.

Keywords

colour fastness, soda boiling, sodium carbonate, textile testing, ISO 105, cellulosic fibres, dye fastness, grey scale assessment, test method, quality control

FAQ

Q: What is this standard?

A: ISO 105-X06:1994 is an international test method that specifies how to evaluate colour fastness of textiles to soda‑boiling (boiling sodium carbonate) treatment.

Q: What does it cover?

A: It covers specimen preparation, reagent and solution preparation (including optional reduction inhibitor), test procedure (boiling treatment), post‑treatment handling, and assessment of colour change and staining using grey scales; mainly intended for natural and regenerated cellulose textiles.

Q: Who typically uses it?

A: Textile test laboratories, fabric and garment manufacturers, dye houses, quality assurance teams, research labs and standards bodies use this method for product evaluation, QC and comparative testing.

Q: Is it current or superseded?

A: The document is the 1994 edition (ISO 105-X06:1994). Users should confirm the formal current status and any subsequent revisions or national adoptions with ISO or their national standards organization before relying on it for compliance or procurement.

Q: Is it part of a series?

A: Yes — it is one part of the ISO 105 series of colour fastness tests, which contains many parts addressing different agents and processes (washing, bleaching, solvents, rubbing, mercerizing, etc.).

Q: What are the key keywords?

A: colour fastness, soda boiling, sodium carbonate, textile test, ISO 105, cellulosic.