SIST EN ISO 14184-2:2011

SLOVENSKI STANDARD
01-oktober-2011
1DGRPHãþD
SIST EN ISO 14184-2:1999
7HNVWLOLMH'RORþHYDQMHIRUPDOGHKLGDGHO6SURãþHQLIRUPDOGHKLGPHWRGD
SDUQHDEVRUSFLMH,62
Textiles - Determination of formaldehyde - Part 2: Released formaldehyde (vapour
absorption method) (ISO 14184-2:2011)
Textilien - Bestimmung des Gehaltes an Formaldehyd - Teil 2: Freigesetzter
Formaldehyd (Wasserdampf-Absorptions-Verfahren) (ISO 14184-2:2011)
Textiles - Dosage du formaldéhyde - Partie 2: Formaldéhyde dégagé (méthode par
absorption de vapeur) (ISO 14184-2:2011)
Ta slovenski standard je istoveten z: EN ISO 14184-2:2011
ICS:
59.080.01 Tekstilije na splošno Textiles in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 14184-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2011
ICS 59.080.01 Supersedes EN ISO 14184-2:1998
English Version
Textiles - Determination of formaldehyde - Part 2: Released
formaldehyde (vapour absorption method) (ISO 14184-2:2011)
Textiles - Dosage du formaldéhyde - Partie 2: Textilien - Bestimmung des Gehaltes an Formaldehyd - Teil
Formaldéhyde dégagé (méthode par absorption de vapeur) 2: Freigesetzter Formaldehyd (Wasserdampf-Absorptions-
(ISO 14184-2:2011) Verfahren) (ISO 14184-2:2011)
This European Standard was approved by CEN on 14 August 2011.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 14184-2:2011: E
worldwide for CEN national Members.

Contents Page
Foreword .3

Foreword
This document (EN ISO 14184-2:2011) has been prepared by Technical Committee ISO/TC 38 "Textiles" in
collaboration with Technical Committee CEN/TC 248 “Textiles and textile products” the secretariat of which is
held by BSI.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by February 2012, and conflicting national standards shall be withdrawn
at the latest by February 2012.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 14184-2:1998.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 14184-2:2011 has been approved by CEN as a EN ISO 14184-2:2011 without any
modification.
INTERNATIONAL ISO
STANDARD 14184-2
Second edition
2011-08-15
Textiles — Determination of
formaldehyde —
Part 2:
Released formaldehyde (vapour
absorption method)
Textiles — Dosage du formaldéhyde —
Partie 2: Formaldéhyde dégagé (méthode par absorption de vapeur)

Reference number
ISO 14184-2:2011(E)
©
ISO 2011
ISO 14184-2:2011(E)
©  ISO 2011
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2011 – All rights reserved

ISO 14184-2:2011(E)
Contents Page
Foreword .iv
1 Scope.1
2 Normative references.1
3 Principle.1
4 Reagents.1
5 Apparatus.2
6 Preparation of standard solution and calibration .2
7 Preparation and conditioning of test specimens.3
8 Procedure.4
9 Calculation .4
10 Test report.4
Annex A (normative) Standardization of formaldehyde stock solution.6
Annex B (informative) Alternative procedure using chromotropic acid .8
Annex C (informative) Information on accuracy of the test.10
Bibliography.12

ISO 14184-2:2011(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. Each 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 (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. 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.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 14184-2 was prepared by Technical Committee ISO/TC 38, Textiles.
This second edition cancels and replaces the first edition (ISO 14184-2:1998), of which it constitutes a minor
revision.
ISO 14184 consists of the following parts, under the general title Textiles — Determination of formaldehyde:
⎯ Part 1: Free and hydrolysed formaldehyde (water extraction method)
⎯ Part 2: Released formaldehyde (vapour absorption method)

iv © ISO 2011 – All rights reserved

INTERNATIONAL STANDARD ISO 14184-2:2011(E)

Textiles — Determination of formaldehyde —
Part 2:
Released formaldehyde (vapour absorption method)
WARNING — This part of ISO 14184 calls for the use of substances and/or procedures that may be
injurious to health if adequate precautions are not taken. It refers only to technical suitability and does
not absolve the user from legal obligations relating to health and safety at any stage. It has been
assumed in the drafting of this part of ISO 14184 that the execution of its provisions is entrusted to
appropriately qualified and experienced people.
1 Scope
This part of ISO 14184 specifies a method for determining the amount of formaldehyde released under the
conditions of accelerated storage from textiles in any form by means of a vapour absorption method.
The procedure is intended for use in the range of releasable formaldehyde on the fabric between 20 mg/kg
and 3 500 mg/kg when determined by this method. The lower limit is 20 mg/kg. Below this limit, the result is
reported as “not detectable”.
A method for determination of free formaldehyde and formaldehyde extracted partly through hydrolysis in
aqueous solution is given in ISO 14184-1.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 139:2005, Textiles — Standard atmospheres for conditioning and testing
ISO 3696:1987, Water for analytical laboratory use — Specification and test methods
3 Principle
A weighed fabric specimen is suspended over water in a sealed jar. The jar is placed in an incubator at a
controlled temperature for a specified length of time. The amount of formaldehyde absorbed by the water is
then determined colorimetrically.
4 Reagents
All reagents shall be of analytical reagent quality.
4.1 Distilled water or grade 3 water complying with ISO 3696.
ISO 14184-2:2011(E)
4.2 Acetylacetone reagent (Nash reagent).
Dissolve 150 g of ammonium acetate in about 800 ml of water (4.1), add 3 ml of glacial acetic acid and 2 ml of
acetylacetone, transfer into a 1 000 ml volumetric flask and make up to the mark with water (4.1). Store in a
brown bottle.
The reagent darkens in colour slightly on standing over the first 12 h. For this reason, the reagent should be
held for 12 h before use. Otherwise, the reagent is usable over a considerable period of time, at least 6 weeks.
However, since the sensitivity may change slightly over a long period of time, it is good practice to run a
calibration curve weekly to correct for slight changes in the standard curve. As an alternative, the
chromotropic acid method described in Annex B may be used.
4.3 Formaldehyde solution, approximately 37 % (M/V or M/m).
5 Apparatus
5.1 Glass preserving jars, 0,95 l to 1,0 l with gas-tight sealing caps (see Figure 1).
5.2 Small wire-mesh baskets (or other suitable means for suspending the test specimen above the water
level inside the jars. As an alternative to the wire-mesh baskets, a double strand of sewing thread may be
used to make a loop in the test specimen that has been folded in half twice, suspended above the water level.
The two double-thread ends are draped over the top of the jar and held securely by the jar cap.
NOTE A simple support for insertion in the preserving jars can be constructed as follows. A piece of aluminium wire
screening 15,2 cm × 14,0 cm is bent around a length of wood 3,8 cm square and fastened together to form a rectangular,
open-ended cage. One side is cut at the corners about halfway up the side and the cut section is folded inward and
fastened. This folded piece forms the bottom of the wire basket while the other three sides form the support legs.
Fastening can be accomplished by twisting short lengths of wire through or around the appropriate part.
5.3 Incubator, thermostatically controlled at (49 ± 2) °C.
5.4 Stoppered volumetric flasks, 50 ml, 250 ml, 500 ml and 1 000 ml.
5.5 Pipettes, 1 ml, 5 ml, 10 ml, 15 ml, 20 ml, 25 ml, 30 ml and 50 ml and graduated at intervals of 5 ml.
NOTE An automatic pipette system of the same accuracy as manual pipettes can be used.
5.6 Burettes, 10 ml and 50 ml.
5.7 Spectrophotometer, capable of reading absorbance to a minimum of 3 decimal places at a wavelength
of 412 nm.
5.8 Test tubes or spectrophotometer tubes.
5.9 Water bath, capable of maintaining a temperature of (40 ± 2) °C.
5.10 Balance, accurate to 0,2 mg.
6 Preparation of standard solution and calibration
6.1 Preparation
Prepare an approximately 1 500 mg/l stock solution of formaldehyde by diluting 3,8 ml of formaldehyde
solution (4.3) to 1 litre with water (4.1). Determine the concentration of formaldehyde in the stock solution by
the method given in Annex A.
2 © ISO 2011 – All rights reserved

SI
...