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IS0
O RG A N I ZAT I O N FO R STA N D AR D IZ AT I O N
I N T ERN AT I ON A L
IS0 RECOMMENDATION
R 177
PLASTICS
DETERMINATION OF MIGRATION OF PLASTICIZERS
1st EDITION
February 1961
COPYRIGHT RESERVED
The copyright of IS0 Recommendations and IS0 Standards
belongs to IS0 Member Bodies. Reproduction of these
documents, in any country, may be authorized therefore only
by the national standards organization of that country, being
a member of ISO.
For each individual country the only valid standard is the national&a&whfht country.
Printed in Switzerland
Also issued in French and Russian. Copies to be obtained through the national standards organizations.
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BRIEF HISTORY
The IS0 Recommendation R 177, Determination of Migration of Plasticizers, was
drawn up by Technical Committee ISO/TC 61, Plastics, the Secretariat of which is held
by the American Standards Association, Incorporated (ASA).
Work on this matter which the Technical Committee had begun since 1954, came to
an end in 1956, with the adoption of a proposal as a Draft IS0 Recommendation.
On 28 November 1958, the Draft IS0 Recommendation (No. 192) was distributed to
all the IS0 Member Bodies and was approved, subject to some editorial amendments, by
the following Member Bodies :
Romania
Australia Hungary
India Spain
Austria
Belgium Israel Sweden
Bulgaria Italy Switzerland
Turkey
Burma Japan
United Kingdom
Czechoslovakia Netherlands
Poland U.S.A.
France
Germany Portugal U.S.S.R.
No Member Body opposed the approval of the Draft.
The Draft IS0 Recommendation was then submitted by correspondence to the IS0
Council, which decided, in Febmary 1961, to accept it as an IS0 RECOMMENDATION.
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IS0 / R 177 - IS81 (E)
IS0 Recommendation R 177
February 1961
PLASTICS
DETERMINATION OF MIGRATION OF PLASTICIZERS
1. SCOPE
The purpose of this IS0 Recommeindation is to determine the tendency of plasticizers to migrate
from plastics products, in which thiy are contained, into other plastics or other materials generally,
if both substances are brought intq close contact with one another.
NOTE. The surfaces toward which the migration takes place may also consist of surface coatings,
such as lacquer layers made of plabtics materials or other products.
2. DEFINTZlON
Migration of plasticizers is to be aonsidered the loss of mass of a sheet consisting of plasticized
plastics, if placed in close contabt between plasticizer-absorbing sheets of another material,
under certain specified conditions,
,3. SIGNIFICANCE OF TEST
This test is suitable :
for the evaluation of the tendency of plasticized plastics materials, especially in form
(a)
of sheets and films, to lose some liquid components contained in them, when in
contact with plasticizepabsorbing materials ;
(b) for the measuring of the migration tendency of individual plasticizers.
3.1
In case (b), standard compounds with the same polymer and plasticizer percentage, under
well defined conditions, shduld be prepared.
3.2 When it is desired to studi the behaviour of different plasticizers in respect of a certain
resin and the effect of theit concentration, for every individual plasticizer, several tests
should be carried out on diyerent compounds, all obtained in the same conditions and the
same polymer, but contaiding different proportions of plasticizer.
NOTE. When the absorbing sheets themselves contain a substance capable of migrating,
a simultaneous migration may occur from the specimen to the absorbing sheets and
vice versa. I
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4. TEST SPECIMENS
4.1 The test specimens shoulq be in the form of a disk 50 f 1 mm in diameter, preferably not
less than 0.5 mm in thiclkness.
4.2 The test specimens may be cut, with a special die, from a sheet not less than 0.5 mm in
thickness, which may be ' prepared by compression moulding the plastic material under
examination, at conveniedt temperature, using as a mould a frame and two smooth metal
plates.
4.3 a plasticizer, a standard compound with a suitable polymer
If the material to be tested is
should be prepared.
4.4 The moulding of a sheet should be carried ou
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