EN ISO 21627-2:2003
(Main)Plastics - Epoxy resins - Determination of chlorine content Part 2: Easily saponifiable chlorine (ISO 21627-2:2002)
Plastics - Epoxy resins - Determination of chlorine content Part 2: Easily saponifiable chlorine (ISO 21627-2:2002)
Kunststoffe - Epoxidharze - Bestimmung des Chlorgehaltes - Teil 2: Leicht verseifbares Chlor (ISO 21627-2:2002)
Dieser Teil von prEN ISO 21627 legt ein Verfahren zur Bestimmung des leicht verseifbaren Chlors in Epoxidharzen 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 von Chlorhydrin-Gruppen in den Verbindungen hin.
Plastiques - Résines époxydes - Détermination de la teneur en chlore - Partie 2: Chlore facilement saponifiable (ISO 21627-2:2002)
Polimerni materiali - Epoksidne smole – Določevanje klora – 2. del: Lahko umiljivi klor (ISO 21627-2:2002)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-februar-2004
1DGRPHãþD
SIST EN ISO 4583:2000
3ROLPHUQLPDWHULDOL(SRNVLGQHVPROH±'RORþHYDQMHNORUD±GHO /DKNRXPLOMLYL
NORU ,62
Plastics - Epoxy resins - Determination of chlorine content Part 2: Easily saponifiable
chlorine (ISO 21627-2:2002)
Kunststoffe - Epoxidharze - Bestimmung des Chlorgehaltes - Teil 2: Leicht verseifbares
Chlor (ISO 21627-2:2002)
Plastiques - Résines époxydes - Détermination de la teneur en chlore - Partie 2: Chlore
facilement saponifiable (ISO 21627-2:2002)
Ta slovenski standard je istoveten z: EN ISO 21627-2:2003
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
November 2003
ICS 83.080.10 Supersedes EN ISO 4583:1998
English version
Plastics - Epoxy resins - Determination of chlorine content Part
2: Easily saponifiable chlorine (ISO 21627-2:2002)
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 21627-2:2002)
21627-2:2002)
This European Standard was approved by CEN on 25 September 2003.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United
Kingdom.
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EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 21627-2:2003 E
worldwide for CEN national Members.
Foreword
The text of ISO 21627-2:2002 has been prepared by Technical Committee ISO/TC 61 "Plastics”
of the International Organization for Standardization (ISO) and has been taken over as EN ISO
21627-2:2003 by Technical Committee CEN/TC 249 "Plastics", the secretariat of which is held
by IBN.
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 May 2004, and conflicting national standards
shall be withdrawn at the latest by May 2004.
This document supersedes EN ISO 4583:1998.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium, Czech
Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and
the United Kingdom.
Endorsement notice
The text of ISO 21627-2:2002 has been approved by CEN as EN ISO 21627-2:2003 without any
modifications.
NOTE Normative references to International Standards are listed in annex ZA (normative).
Annex ZA
(normative)
Normative references to international publications
with their relevant European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of
any of these publications apply to this European Standard only when incorporated in it by
amendment or revision. For undated references the latest edition of the publication referred to
applies (including amendments).
NOTE Where an International Publication has been modified by common modifications, indicated
by (mod.), the relevant EN/HD applies.
Publication Year Title EN Year
ISO 3696 1987 Water for analytical laboratory use - EN ISO 3696 1995
Specification and test methods
INTERNATIONAL ISO
STANDARD 21627-2
First edition
2002-08-15
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 21627-2:2002(E)
ISO 21627-2:2002(E)
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ii ISO 2002 – All rights reserved
ISO 21627-2:2002(E)
Contents Page
1 Scope . 1
2 Normative references . 1
3 Term and definition . 1
4 Principle . 1
5 Reagents . 2
6 Apparatus . 3
7 Procedure . 3
8 Expression of results . 4
9 Precision . 4
10 Test report . 5
Bibliography. 6
©
ISO 2002 – All rights reserved iii
ISO 21627-2:2002(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 3.
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 part of ISO 21627 may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
International Standard ISO 21627-2 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee
SC 12, Thermosetting materials.
This first edition cancels and replaces ISO 4583:1998, of which it constitues a technical revision.
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 2002 – All rights reserved
ISO 21627-2:2002(E)
Introduction
In producing epoxy resins based on epichlorohydrin, impurities containing chlorine may be formed. These are shown
below. Since these impurities could lower 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.
— Part3: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 impurity types of inorganic and organic chlorine.
©
ISO 2002 – All rights reserved v
INTERNATIONAL STANDARD ISO 21627-2:2002(E)
Plastics — Epoxy resins — Determination of chlorine content —
Part 2:
Easily saponifiable chlorine
WARNING — Persons using this part of ISO 21627 should be familiar with normal laboratory practice. This
standard does not purport to address all of the safety problems, 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 national regulatory conditions.
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 of chlorohydrin groups in the
compounds.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of
this part of ISO 21627. For dated references, subsequent amendments to, or revisions of, any of these publications
do not apply. However, parties to agreements based on this part of ISO 21627 are encouraged to investigate the
possibility of applying the most recent editions of the normative documents indicated below. For undated references,
the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of
currently valid International Standards.
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 Term and definition
For the purposes of this part of ISO 21627, the following term and definition apply.
3.1
easily saponifiable chlorine
the amount of chlorine saponifiable by this test method consisting mainly of chlorine which is present as
1,2-chlorohydrin as the result of incomplete dehydrohalogenation
4 Principle
Epoxy resins, excluding 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 2002 – All rights reserved 1
ISO 21627-2:2002(E)
The mixture is acidified and the chloride ion concentration resulting from the saponification is determined by
potentiometric titration with standardized silv
...
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