SIST EN ISO 8974:2002

Plastics - Phenolic resins - Determination of residual phenol content by gas chromatography (ISO 8974:2002)

This International Standard specifies two methods, using gas chromatography, of measuring the residual phenol content of phenolic resins.

Kunststoffe - Phenolharze - Bestimmung des freien Phenols durch Gas-Chromatographie (ISO 8974:2002)

Diese Internationale Norm beschreibt zwei gaschromatographische Verfahren für die Bestimmung des freien Phenols in Phenolharzen.

Plastiques - Résines phénoliques - Dosage du phénol résiduel par chromatographie en phase gazeuse (ISO 8974:2002)

La présente Norme internationale spécifie une méthode par chromatographie en phase gazeuse pour le dosage du phénol résiduel dans les résines phénoliques.

Polimerni materiali - Fenolne smole - Določevanje ostankov fenola s plinsko kromatografijo (ISO 8974:2002)

General Information

• Status: Published
• Publication Date: 31-Aug-2002
• ICS: 83.080.10 - Thermosetting materials
• Technical Committee: IPMA - Polimer materials and products
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Sep-2002
• Due Date: 01-Sep-2002
• Completion Date: 01-Sep-2002
• Ref Project: EN ISO 8974:2002 - Plastics - Phenolic resins - Determination of residual phenol content by gas chromatography (ISO 8974:2002)

Relations

• Replaces: SIST EN ISO 8974:1999 - Plastics - Phenolic resins - Determination of residual phenol content by gas chromatography (ISO 8974:1997)
• Effective Date: 01-Sep-2002

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 8974:2002
01-september-2002
1DGRPHãþD
SIST EN ISO 8974:1999
3ROLPHUQLPDWHULDOL)HQROQHVPROH'RORþHYDQMHRVWDQNRYIHQRODVSOLQVNR
NURPDWRJUDILMR,62
Plastics - Phenolic resins - Determination of residual phenol content by gas
chromatography (ISO 8974:2002)
Kunststoffe - Phenolharze - Bestimmung des freien Phenols durch Gas-
Chromatographie (ISO 8974:2002)
Plastiques - Résines phénoliques - Dosage du phénol résiduel par chromatographie en
phase gazeuse (ISO 8974:2002)
Ta slovenski standard je istoveten z: EN ISO 8974:2002
ICS:
83.080.10 Duromeri Thermosetting materials
SIST EN ISO 8974:2002 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 8974:2002

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SIST EN ISO 8974:2002
EUROPEAN STANDARD
EN ISO 8974
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2002
ICS 83.080.10 Supersedes EN ISO 8974:1999
English version
Plastics - Phenolic resins - Determination of residual phenol
content by gas chromatography (ISO 8974:2002)
Plastiques - Résines phénoliques - Dosage du phénol Kunststoffe - Phenolharze - Bestimmung des freien
résiduel par chromatographie en phase gazeuse (ISO Phenols durch Gas-Chromatographie (ISO 8974:2002)
8974:2002)
This European Standard was approved by CEN on 2 April 2002.
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,
Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2002 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 8974:2002 E
worldwide for CEN national Members.

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SIST EN ISO 8974:2002
EN ISO 8974:2002 (E)
CORRECTED  2002-06-19
Foreword
This document (EN ISO 8974:2002) 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 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 November 2002, and conflicting
national standards shall be withdrawn at the latest by November 2002.
This document supersedes EN ISO 8974:1999.
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, Iceland, Ireland, Italy,
Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the
United Kingdom.
Endorsement notice
The text of the International Standard ISO 8974:2002 has been approved by CEN as a
European Standard without any modifications.
NOTE Normative references to International Standards are listed in annex ZA (normative).
2

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SIST EN ISO 8974:2002
EN ISO 8974:2002 (E)
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 1042 1998 Laboratory glassware — One mark EN ISO 1042 1999
volumetric flasks
ISO 10082 1999 Plastics - Phenolic resins - EN ISO 10082 1999
Classification and test methods
3

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SIST EN ISO 8974:2002

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SIST EN ISO 8974:2002

INTERNATIONAL ISO
STANDARD 8974
Third edition
2002-05-01

Plastics — Phenolic resins —
Determination of residual phenol content
by gas chromatography
Plastiques — Résines phénoliques — Dosage du phénol résiduel par
chromatographie en phase gazeuse




Reference number
ISO 8974:2002(E)
©
 ISO 2002

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SIST EN ISO 8974:2002
ISO 8974:2002(E)
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ii © ISO 2002 – All rights reserved

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SIST EN ISO 8974:2002
ISO 8974:2002(E)
Contents Page
Foreword.iv
1 Scope .1
2 Normative references.1
3 Principle.1
4 Terms and definitions .1
5 Reagents and materials .2
6 Apparatus .3
7 Procedure .4
8 Expression of results .7
9 Precision.8
10 Test report .8
Annex A (informative) Examples of operating conditions.9
Annex B (informative) Example of determination of calibration curve .10

© ISO 2002 – All rights reserved iii

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SIST EN ISO 8974:2002
ISO 8974:2002(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.
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 International Standard may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 8974 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 12, Thermosetting
materials.
This third edition cancels and replaces the second edition (ISO 8974:1997), which has been technically revised.
Annexes A and B of this International Standard are for information only.
iv © ISO 2002 – All rights reserved

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SIST EN ISO 8974:2002
INTERNATIONAL STANDARD ISO 8974:2002(E)

Plastics — Phenolic resins — Determination of residual phenol
content by gas chromatography
1 Scope
This International Standard specifies two methods, using gas chromatography, of measuring the residual phenol
content of phenolic resins.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of
this International Standard. For dated references, subsequent amendments to, or revisions of, any of these
publications do not apply. However, parties to agreements based on this International Standard 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 1042:1998, Laboratory glassware — One-mark volumetric flasks
ISO 6353-2:1983, Reagents for chemical analysis — Part 2: Specifications — First series
ISO 10082:1999, Plastics — Phenolic resins — Classification and test methods
3 Principle
A test portion is dissolved in a suitable solvent and the phenol content determined by gas chromatography.
4 Terms and definitions
For the purposes of this International Standard, the terms and definitions contained in ISO 10082 and the following
terms and definitions apply.
4.1
internal standard
reference material added in known quantity to the test solution to determine the response factor for the phenol
4.2
mass ratio
ratio of the mass of the phenol to the mass of an internal standard in the test solution
4.3
peak area ratio
ratio of the phenol peak area to the internal-standard peak area
NOTE In the chromatogram, the phenol peak area is the area contained within the phenol peak and the baseline. The
internal-standard peak area is the area contained within the internal-standard peak and the baseline.
© ISO 2002 – All rights reserved 1

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SIST EN ISO 8974:2002
ISO 8974:2002(E)
4.4
response factor
response for the phenol compared to the response for the internal standard:
Mass ratio
K =
Peak area ratio
4.5
retention time
time between injection of the solute and the vertex of the supposed symmetrical peak
5 Reagents and materials
During the analysis, use only reagents of recognized analytical grade (as listed in ISO 6353-2) except where
otherwise stated.
5.1 Carrier gas: hydrogen, nitrogen or helium, chromatographic grade.
NOTE For safety reasons, the use of helium or nitrogen is recommended.
5.2 Detector gas: hydrogen and compressed air.
5.3 Internal standard: any product which is not usually a constituent of phenolic resins and which meets the
following requirements:
 is chemically pure;
 has good long-term stability;
 is chemically inert to phenolic resins under the test conditions;
 does not interfere with any of the constituents of the sample;
 gives a linear response within the range of concentrations to be measured;
 preferably has a retention time close to that of the phenol and gives a Gaussian peak.
Examples of reagents which meet the above-mentioned requirements are:
 1-octanol (especially recommended);
 1-undecanol.
5.4 Solvent: any product which will completely dissolve the internal standard and the test portion of phenolic
resin to give a stable solution, and which meets the following requirements:
 is inert (does not react with the resin or the internal standard under the test conditions);
 is compatible with the constituents of the chromatographic column;
 has a retention time different from those of the phenol and the internal standard.
2 © ISO 2002 – All rights reserved

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