EN ISO 21627-2:2009
(Main)Plastics - Epoxy resins - Determination of chlorine content - Part 2: Easily saponifiable chlorine (ISO 21627-2:2009)
Plastics - Epoxy resins - Determination of chlorine content - Part 2: Easily saponifiable chlorine (ISO 21627-2:2009)
ISO 21627-2:2009 specifies a method for the determination of easily saponifiable chlorine in epoxy resins.
The easily saponifiable chlorine content is the quantity of easily saponifiable chlorine in a given quantity of epoxy resin.
The values obtained are indicative of the concentration of easily saponifiable chlorine in chlorohydrin groups in the resin.
Kunststoffe - Epoxidharze - Bestimmung des Chlorgehaltes - Teil 2: Leicht verseifbares Chlor (ISO 21627-2:2009)
Dieser Teil von ISO 21627 legt ein Verfahren zur Bestimmung des leicht verseifbaren Chlors in Epoxid¬harzen fest.
Der Gehalt an leicht verseifbarem Chlor entspricht der Menge an leicht verseifbarem Chlor in einer vorgegebenen Menge von Epoxidharz.
Die erhaltenen Werte deuten auf die Konzentration des leicht verseifbaren Chlors in Chlorhydrin-Gruppen im Harz hin.
Plastiques - Résines époxydes - Détermination de la teneur en chlore - Partie 2: Chlore facilement saponifiable (ISO 21627-2:2009)
L'ISO 21627-2:2009 spécifie une méthode pour le dosage du chlore facilement saponifiable dans les résines époxydes.
La teneur en chlore facilement saponifiable est la quantité de chlore facilement saponifiable contenue dans une quantité donnée de résine époxyde.
Les valeurs ainsi obtenues donnent une indication concernant la concentration en chlore facilement saponifiable des groupes chlorhydrine de la résine.
Polimerni materiali - Epoksidne smole - Določevanje klora - 2. del: Lahko umiljivi klor (ISO 21627-2:2009)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2009
1DGRPHãþD
SIST EN ISO 21627-2:2004
3ROLPHUQLPDWHULDOL(SRNVLGQHVPROH'RORþHYDQMHNORUDGHO /DKNRXPLOMLYL
NORU ,62
Plastics - Epoxy resins - Determination of chlorine content - Part 2: Easily saponifiable
chlorine (ISO 21627-2:2009)
Kunststoffe - Epoxidharze - Bestimmung des Chlorgehaltes - Teil 2: Leicht verseifbares
Chlor (ISO 21627-2:2009)
Plastiques - Résines époxydes - Détermination de la teneur en chlore - Partie 2: Chlore
facilement saponifiable (ISO 21627-2:2009)
Ta slovenski standard je istoveten z: EN ISO 21627-2:2009
ICS:
83.080.10 Duromeri Thermosetting materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 21627-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2009
ICS 83.080.10 Supersedes EN ISO 21627-2:2003
English Version
Plastics - Epoxy resins - Determination of chlorine content - Part
2: Easily saponifiable chlorine (ISO 21627-2:2009)
Plastiques - Résines époxydes - Détermination de la teneur Kunststoffe - Epoxidharze - Bestimmung des Chlorgehaltes
en chlore - Partie 2: Chlore facilement saponifiable (ISO - Teil 2: Leicht verseifbares Chlor (ISO 21627-2:2009)
21627-2:2009)
This European Standard was approved by CEN on 18 September 2009.
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 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 Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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
© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 21627-2:2009: E
worldwide for CEN national Members.
Contents Page
Foreword .3
Foreword
This document (EN ISO 21627-2:2009) has been prepared by Technical Committee ISO/TC 61 "Plastics" in
collaboration with Technical Committee CEN/TC 249 “Plastics” the secretariat of which is held by NBN.
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 March 2010, and conflicting national standards shall be withdrawn at
the latest by March 2010.
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 21627-2:2003.
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, 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 21627-2:2009 has been approved by CEN as a EN ISO 21627-2:2009 without any
modification.
INTERNATIONAL ISO
STANDARD 21627-2
Second edition
2009-09-15
Plastics — Epoxy resins — Determination
of chlorine content —
Part 2:
Easily saponifiable chlorine
Plastiques — Résines époxydes — Détermination de la teneur en
chlore —
Partie 2: Chlore facilement saponifiable
Reference number
ISO 21627-2:2009(E)
©
ISO 2009
ISO 21627-2:2009(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.
© ISO 2009
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 2009 – All rights reserved
ISO 21627-2:2009(E)
Contents Page
Foreword .iv
Introduction.v
1 Scope.1
2 Normative references.1
3 Terms and definitions .1
4 Principle .1
5 Reagents .2
6 Apparatus.3
7 Procedure.3
8 Expression of results.5
9 Precision .5
10 Test report.5
Bibliography.6
ISO 21627-2:2009(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 21627-2 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 12,
Thermosetting materials.
This second edition cancels and replaces the first edition (ISO 21627-2:2002), which has been technically
revised.
ISO 21627 consists of the following parts, under the general title Plastics — Epoxy resins ― Determination of
chlorine content:
⎯ Part 1: Inorganic chlorine
⎯ Part 2: Easily saponifiable chlorine
⎯ Part 3: Total chlorine
iv © ISO 2009 – All rights reserved
ISO 21627-2:2009(E)
Introduction
In producing epoxy resins based on epichlorohydrin, impurities containing chlorine may be formed. These are
shown below. Since these impurities could impair the final properties of the cured resins, it is necessary to
control their formation. Their chemical activities differ significantly, so different analytical procedures are
needed for their analysis.
ISO 21627 specifies methods for the determination of these organic and inorganic chlorides which occur as
impurities in epoxy resins derived from epichlorohydrin:
⎯ Part 1: Inorganic chlorine (also called ionic chlorine).
⎯ Part 2: Easily saponifiable chlorine, consisting mainly of chlorine which is present as 1,2-chlorohydrin as
the result of incomplete dehydrohalogenation.
⎯ Part 3: Total chlorine, consisting mainly of all saponifiable organic chlorine, e.g. 1,2-chlorohydrin,
1,3-chlorohydrin and 1-chloro-2-glycidylether (chloromethyl derivative) which are the result of incomplete
dehydrohalogenation, along with inorganic chlorine present in the test portion of epoxy resin.
Since the purposes of Parts 1 to 3 of ISO 21627 differ, one of these methods should be selected, depending
on the impurities to be measured.
For analytical methods for impurities other than those shown below, see ISO 4615.
Typical types of inorganic and organic chlorine impurity are shown below:
Inorganic chlorine (or ionic chlorine)
1,2-Chlorohydrin
1,3-Chlorohydrin
1-Chloro-2-glycidylether
(chloromethyl derivative)
INTERNATIONAL STANDARD ISO 21627-2:2009(E)
Plastics — Epoxy resins — Determination of chlorine content —
Part 2:
Easily saponifiable chlorine
SAFETY STATEMENT — Persons using this document should be familiar with normal laboratory
practice, if applicable. This document does not purport to address all of the safety concerns, if any,
associated with its use. It is the responsibility of the user to establish appropriate safety and health
practices and to ensure compliance with any regulatory requirements.
1 Scope
This part of ISO 21627 specifies a method for the determination of easily saponifiable chlorine in epoxy resins.
The easily saponifiable chlorine content is the quantity of easily saponifiable chlorine in a given quantity of
epoxy resin.
The values obtained are indicative of the concentration of easily saponifiable chlorine in chlorohydrin groups in
the resin.
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 3696:1987, Water for analytical laboratory use — Specification and test methods
ISO 21627-1, Plastics — Epoxy resins — Determination of chlorine content — Part 1: Inorganic chlorine
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
easily saponifiable chlorine
amount of chlorine saponifiable by this test method, consisting mainly of chlorine present as 1,2-chlorohydrin
as a result of incomplete dehydrohalogenation
4 Principle
Epoxy resins, except glycidyl esters, are reacted with NaOH solution at room temperature in 2-butoxyethanol.
Glycidyl esters are reacted with NaOH solution at 50 °C in methanol.
ISO 21627-2:2009(E)
The mixture is acidified and the concentration of chloride ions resulting from the saponification is determined
by potentiometric titration with standardized silver nitrate solution. A correction is made for the inorganic
chlorine content of the sample, determined by the method specified in ISO 21627-1.
5 Reagents
During the analysis, use onl
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.