EN ISO 9397:1997

SLOVENSKI STANDARD
01-maj-1999
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Plastics - Phenolic resins - Determination of free-formaldehyde content - Hydroxylamine
hydrochloride method (ISO 9397:1995)
Kunststoffe - Phenolharze - Bestimmung des Gehaltes an freiem Formaldehyd -
Hydroxylaminhydrochlorid-Methode (ISO 9397:1995)
Plastiques - Résines phénoliques - Dosage du formaldéhyde libre - Méthode au
chlorhydrate d'hydroxylamine (ISO 9397:1995)
Ta slovenski standard je istoveten z: EN ISO 9397:1997
ICS:
83.080.10 Duromeri Thermosetting materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

INTERNATIONAL
STANDARD
Second edition
1995-05-01
- Phenolic resins -
Plastics
Determination of free-formaldehyde
- Hydroxylamine hydrochloride
content
method
- Dosage du formaldkhyde libre -
- Reines phknoliques
Plas tiques
Methode au chlorhydrate d’hydroxylamine
Reference number
ISO 9397:1995(E)
ISO 9397:4995(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
(IEC) 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 9397 was prepared by Technical Committee
ISO/TC 61, Plastks, Subcommittee SC 12, Thermosetting materjak.
This second edition cancels and replaces the first edition (ISO 9397:
1989), of which it constitutes a minor revision.
0 ISO 1995
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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 9397:1995(E)
Plastics - Phenolic resins - Determination of
free-formaldehyde content - Hydroxylamine
hydrochloride method
are subject to revision, and Parties to agreements
1 Scope
based on this International Standard are encouraged
to investigate the possibility of applying the most re-
This International Standard specifies a method of
cent editions of the Standards indicated below.
chemically determining free formaldehyde in phenolic
Members of IEC and ISO maintain registers of cur-
resins by potentiometric titration, in aqueous or or-
rently valid International Standards.
ganic Solution. The method is applicable to resins with
free-formaldehyde contents up to and including
ISO 9020:1994, Binders for paints and varnishes -
15 % (m/m). For free-formaldehyde contents between
Determination of free-formaldehyde con ten t of amino
15 % (m/m) and 30 % (m/m), it may be necessary to
resins - Sodium sulfite titrime tric me thod.
adjust the concentrations of the Standard volumetric
solutions used accordingly. This method must not be
ISO 11402:1993, Plastics - Condensation resins -
used in the presence of hexamethylenetetramine.
Determination of free formaldehyde.
2 Normative references
3 Choice of method
The following Standards contain provisions which,
through reference in this text, constitute provisions The methods available for
...