EN ISO 105-Z09:1997

Textiles - Tests for colour fastness - Part Z09: Determination of cold water solubility of water-soluble dyes (ISO 105-Z09:1995)

Describes a method for the determination of solubility of water-soluble dyes at 25 °C in aqueous solution without previous heating. The method is not intended to measure absolute solubility.

Textilien - Farbechtheitsprüfungen -Teil Z09: Bestimmung der Kaltwasserlöslichkeit von wasserlöslichen Farbstoffen (ISO 105-Z09:1995)

Dieser Teil von ISO 105 legt ein Verfahren fest zur Bestimmung der Löslichkeit von wasserlöslichen Farbstoffen in wässrigen Lösungen bei 25°C ohne Vorwärmung. Das Verfahren ist nicht für die Messung der absoluten Löslichkeit vorgesehen.

Textiles - Essais de solidité des teintures - Partie Z09: Détermination de la solubilité dans l'eau froide des colorants solubles dans l'eau (ISO 105-Z09:1995)

La présente partie de l'ISO 105 décrit une méthode pour la détermination de la solubilité en solution aqueuse à 25 °C des colorants solubles dans l'eau, sans chauffage préalable. La méthode indiquée n'est pas destinée à mesurer la solubilité absolue.  
NOTE 1 Les différents facteurs qui peuvent avoir une influence sur les résultats d'essai sont indiqués dans l'annexe A.

Tekstilije - Preskušanje barvne obstojnosti - Del Z09: Ugotavljanje topnosti vodotopnih barvil v hladni vodi (ISO 105-Z09:1995)

General Information

• Status: Published
• Publication Date: 16-Sep-1997
• Withdrawal Date: 30-Mar-1998
• ICS: 59.080.01 - Textiles in general
• Technical Committee: CEN/TC 248 - Textiles and textile products
• Drafting Committee: CEN/TC 248/SC 3 - Chemical properties
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 29-May-2007
• Completion Date: 29-May-2007
• Ref Project: SIST EN ISO 105-Z09:1999 - Textiles - Tests for colour fastness - Part Z09: Determination of cold water solubility of water-soluble dyes (ISO 105-Z09:1995)

Overview

EN ISO 105-Z09:1997 is an international standard developed by the Comité Européen de Normalisation (CEN) in collaboration with the International Organization for Standardization (ISO). It specifies a standardized method for determining the cold water solubility of water-soluble dyes in textiles at 25 °C. This test is crucial for assessing the behavior of colored textiles when exposed to cold water without prior heating, addressing important aspects of color fastness and dye stability in textile manufacturing and quality control. This method measures solubility visually and by flow-through time but does not assess absolute solubility.

Key Topics

• Scope and Purpose
  The standard describes a procedure to determine the solubility limit of water-soluble dyes at a fixed temperature of 25 °C under controlled conditions without pre-heating. It is primarily used to evaluate the solubility threshold of dyes for quality assurance in textiles.

• Test Principle
  Known concentrations of the dye are prepared in aqueous solutions and filtered at 25 °C using a thermostatically controlled glass Nutsch filter. The presence of residues on the filter after drying indicates exceeded solubility. The test uses visual inspection together with measurement of filtrate flow-through times as criteria.

• Equipment and Setup

  • Glass beakers (400 ml capacity)
  • Heating bath controlled to 25 ± 2 °C with magnetic stirrer
  • Heatable Nutsch filter or Büchner funnel with vacuum apparatus
  • Filter papers (70 mm diameter) with specific permeability characteristics
  • Stopwatch for recording flow-through time
  • Water complying with ISO 3696 grade 3 for analytical use

• Procedure Highlights

  • Dye solutions of increasing concentration are stirred in water at 25 °C
  • Solutions are filtered under vacuum without temperature shock
  • Filter residues and filtration time indicate solubility limits
  • The method includes a detailed reporting framework covering dye identification, filter type, stirring time, solubility limits, and any deviations or observations.

• Results Interpretation
  The cold water solubility limit corresponds to the dye concentration at which filter residues become visible. A sharp increase in filtration time further confirms this solubility threshold.

Applications

• Textile Quality Control
  Ensures dyes used in textile production are suitable for cold water laundering conditions and maintains color fastness.

• Dye Manufacturer Compliance
  Supports manufacturers in validating and certifying dye solubility characteristics in product specifications.

• Research and Development
  Used in developing new water-soluble dyes with targeted solubility profiles to optimize performance and environmental impact.

• Environmental Testing
  Evaluates potential dye release into cold water effluents during textile washing, aiding environmental compliance efforts.

• Standardized Laboratory Testing
  Provides replicable testing methods for textile laboratories to compare products reliably across regions.

Related Standards

• ISO 105-A01 – General information and list of parts for textile color fastness tests including solubility methods.
• ISO 3696 – Specifies water quality requirements for laboratory use, ensuring consistent solvent purity in testing.
• ISO 3819 – Defines laboratory beakers for preparing dye solutions.
• ISO 1773 – Covers specifications for laboratory glassware such as boiling flasks used in dye preparation.

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Keywords: EN ISO 105-Z09:1997, water-soluble dyes, cold water solubility, textile dye testing, color fastness, Nutsch filter method, dye solubility limit, textile quality control, aqueous dye solutions, filtration test, standard test method, textile standards.

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-1999
Tekstilije - Preskušanje barvne obstojnosti - Del Z09: Ugotavljanje topnosti
vodotopnih barvil v hladni vodi (ISO 105-Z09:1995)
Textiles - Tests for colour fastness - Part Z09: Determination of cold water solubility of
water-soluble dyes (ISO 105-Z09:1995)
Textilien - Farbechtheitsprüfungen -Teil Z09: Bestimmung der Kaltwasserlöslichkeit von
wasserlöslichen Farbstoffen (ISO 105-Z09:1995)
Textiles - Essais de solidité des teintures - Partie Z09: Détermination de la solubilité dans
l'eau froide des colorants solubles dans l'eau (ISO 105-Z09:1995)
Ta slovenski standard je istoveten z: EN ISO 105-Z09:1997
ICS:
59.080.01 Tekstilije na splošno Textiles in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

INTERNATIONAL
ISO
STANDARD 105-zog
First edition
1995-06-15
- Tests for colour fastness -
Textiles
Part ZO9:
Determination of cold water solubility of
water-soluble dyes
Textiles - Essais de solidit6 des teintures -
Partie ZO9: Determination de Ia solubilith dans I ’eau froide des colorants
solubles dans I ’eau
Reference number
ISO 105-ZO9:1995(E)
ISO 1050209:1995(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide
federation of national Standards bodies (ISO member bodies). The work
of preparing International Standards is normally carried out through ISO
technical committees. Esch member body interested in a subject for
which a technical committee has been established has the right to be
represented on that committee. International organizations, governmental
and non-governmental, in liaison with ISO, also take part in the work. ISO
collaborates closely with the International Electrotechnical Commission
(1 EC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are
circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting
a vote.
International Standard ISO 105-209 was prepared by Technical Committee
lSO/TC 38, Textiles, Subcommittee SC 1, Tests for coloured textiles and
coloran ts.
ISO 105 was previously published in thirteen “Parts ”, each designated by
a letter (e.g. “Part A ”), with publication dates between 1978 and 1985.
Esch part contained a series of “sections ”, each designated by the re-
spective part letter and by a two-digit serial number (e.g. “Section AO1 “).
These sections are now being republished as separate documents, them-
selves designated “Parts” but retaining their earlier alphanumeric desig-
nations. A complete list of these Parts is given in ISO l05-AOI .
Annex A of this part of ISO 105 is for information only.
0 ISO 1995
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronie or mechanical, including photocopying and
microfilm, without Permission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-l 211 Geneve 20 l Switzerland
Printed in Switzerland
INTERNATIONAL STANDARD 0 ISO ISO 105209:1995(E)
Textiles - Tests for colour fastness -
Part ZO9:
Determination of cold water solubility of watet=-soluble
dyes
pared at 25 “C. The solutions are then filtered under
1 Scope
suction at this temperature in a heatable Nutsch filter
and the cold water solubility limit determined by visual
This part of ISO 105 describes a method for the de-
assessment of the filter residues and the measured
termination of solubility of water-soluble dyes at
flow-through time of the filtrate.
25 “C in aqueous Solution without previous heating.
The method is not intended to measure absolute sol-
u bility.
4 Apparatus and reagents
NOTE 1 Several factors which may influence test results
4.1 Glass beaker, capacity 400 ml, conforming to
are listed in annex A.
ISO 3819.
2 Normative references
4.2 Heating bath, thermostatically controlled, to
25 “C & 2 “C, with magnetic stirring bar 40 mm long
The following Standards contain provisions which,
by 6 mm diameter; Speed of stirrer 500 r/min to
through reference in this text, constitute provisions
600 r/min.
of this part of ISO 105. At the time of publication, the
editions indicated were valid. All Standards are subject
4.3 Nutsch filter (Büchner funnel), heatable, of
to revision, and Parties to agreements based on this
glass, stainless steel or porcelain; inner diameter
part of ISO 105 are encouraged to investigate the
70 mm, capacity at least 200 ml, having more than
possibility of applying the most recent editions of the
100 holes with a total surface area of holes (evenly
Standards indicated below. Members of IEC and ISO
distributed) of not less than 200 mm*.
maintain registers of currently valid International
Standards.
4.4 Thermostatic device (optional), with circulation
pump to adjust temperature of Nutsch filter.
ISO 1773: 1976, Labora tory glassware - Boiling
flasks (narrow-necked).
4.5 Vacuum apparatus.
ISO 3819: 1985, Laboratory glassware - Beakers.
4.5.1 Suction bottle, capacity 1 litre to 2 litres.
ISO 3696: 1987, Water for analytical laboratory use -
Specifica tion and test methods.
4.5.2 Piston or membrane pu
...