EN ISO 176:1999

SLOVENSKI STANDARD
01-maj-2000
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Plastics - Determination of loss of plasticizers - Activated carbon method (ISO 176:1976)
Kunststoffe - Bestimmung der Weichmacherabgabe - Aktivkohleverfahren (ISO
176:1976)
Matieres plastiques - Détermination des pertes en plastifiants - Méthodes au charbon
actif (ISO 176:1976)
Ta slovenski standard je istoveten z: EN ISO 176:1999
ICS:
83.080.01 Polimerni materiali na Plastics in general
splošno
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

INTERNATIONAL STANDARD
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION l MEXJJYHAPOflHAII OPI-AHM3ALWI l-IO CTAHAAPTM3ALJMW.ORGANISATION INTERNATIONALE DE NORMALISATION
PIastics - Determination of loss of plasticizers -
Activated carbon method
Ma tieres plas tiques - Lk$wnination des pertes en plastifiants - IWthode au charbon actif
First edition - 1976-07-15
Ref. No. ISO 176-1976 (E)
UDC 678.5/.8 : 543.813
Descriptors : plastics, tests, measurement, losses, plasticizers.
Price based on 2 pages
FOREWORD
ISO (the International Organization for Standardization) is a worldwide federation
of national Standards institutes (ISO Member Bodies). The work of developing
International Standards is carried out through ISO Technical Committees. Every
Member Body interested in a subject for which a Technical Committee has been set
up 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.
Draft International Standards adopted by the Technical Committees are circulated
to the Member Bodies for approval before their acceptance as International
Standards by the ISO Council.
Prior to 1972, the results of the work of the Technical Committees were published
as ISO Recommandations; these documents are now in the process sf being
transformed into International Standards. As part of this process, Technical
Committee ISO/TC 61 has reviewed ISO Recommendation R 176 and found it
technically suitable for transformation. International Standard ISO 176 therefore
replaces ISO Recommendation R 176-1961 to which it is technically identical.
ISO Recommendation R 176 was approved by the Member Bodies of the following
countries :
Australia Israel Sweden
Austria I taly Switzerland
Belgium Japan Turkey
Bulgaria Netherlands United Kingdom
Czechoslova kia Poland U.S.A.
Germany Portugal U.S.S. R.
Hungary Romania
India Spain
The Member Body of the following country expressed disapproval of the
Recommendation on technical grounds :
France
The Member Bodies of the following countries disapproved the transformation of
ISO/R 176 into an International Standard :
France
Nether nlands
0 International Organkation for Standardization, 1976 l
Printed in Switzerland
ISO 1764976 (E)
INTERNATIONAL STANDARD
Plast& - Determination of loss of plasticizers -
Activated carbon method
1 SCOPE AND FIELD OF APPLICATION 3 APPARATUS AND MATERIALS
3.1 Analytical balance accurate to 0,001 g.
1 .l This International Standard specifies two empirical
methods for the quantitative determination of the loss of
mass from a plastic material under defined conditions of
3.2 Micrometer accurate to 0,Ol mm.
time and temperature, in the presence of activated carbon.
3.3 Thermostatical bath or oven capable of maintaining
1.2 These methods are used, in particular, for the
+ 1 “C of the test temperature, in
the temperature to within
quantitative determination of the loss on heating of
the range of 50 to 150 ‘C.
plasticizers from plasticized plastic materials in which case
it is generally assumed that no significant amounts of other
3.4 Containers : Metal cans, of cylindrical form, about
volatile materials are present.
100 mm in diameter and 120 mm in height provided with
non-air-tight cover; a lid with a small vent hole of 3 mm
1.3 These are empirical test methods, only suitable for a
diameter may be suitable.
rather rapid comparison of the losses of plasticizers or, in
general, of volatile compounds, from different plastics.
3.5 Cylindrical metal cages, constructed from bronze
gauze having apertures of approximately 500 Pm, with a
1.4 They may also be employed for the comparison of
diameter of 60 mm and a height of 6 mm, formed by
different types of plasticizers; in this case Standard
soldering a Strip of the gauze at right angles to the periphery
compounds should be prepared, on the basis of a weil
of a disk of the gauze; a similar but slightly larger cylinder
characterized resin, with known ratios of resin to plasticizer.
acts as a lid.
NOTE - These comparisons are possible only if the test specimens
3.6
...