ASTM D1239-98
(Test Method)Standard Test Method for Resistance of Plastic Films to Extraction by Chemicals
Standard Test Method for Resistance of Plastic Films to Extraction by Chemicals
SCOPE
1.1 This test method for resistance of plastic films to chemicals covers the measurement of the weight loss of film after immersion in chemicals. Note 1-Film is defined as sheeting having nominal thickness not greater than 0.25 mm (0.010 in.), in accordance with Terminology D883.
1.2 The values stated in SI units are to be regarded as the standard. The values stated in other units are nominal values given for information only.
1.3 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 of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. >
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Designation:D 1239–98
Standard Test Method for
Resistance of Plastic Films to Extraction by Chemicals
This standard is issued under the fixed designation D 1239; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope components from the plastic film when immersed in liquids
commonly used in households.
1.1 This test method for resistance of plastic films to
chemicals covers the measurement of the weight loss of film
5. Apparatus
after immersion in chemicals.
5.1 Balance—An accurate analytical balance.
NOTE 1—There is no ISO standard similar or equivalent toTest Method
5.2 Containers—Pint jars or cans with a diameter of at least
D 1239.
65 mm (2.5 in.) (one container for each specimen).
NOTE 2—Film is defined as sheeting having nominal thickness not
greater than 0.25 mm (0.010 in.), in accordance with Terminology D 883.
6. Materials
1.2 The values stated in SI units are to be regarded as the
6.1 Distilled Water—Freshly prepared distilled or deionized
standard. The values stated in other units are nominal values
water.
given for information only.
6.2 Soap Solution (1 %)—Dissolve 12 g of dehydrated pure
1.3 This standard does not purport to address all of the
white soap flakes (dried for1hat 105°C) in 1200 mL of
safety concerns, if any, associated with its use. It is the
distilled water. This is sufficient solution to test three speci-
responsibility of the user of this standard to establish appro-
mens.
priate safety and health practices and determine the applica-
6.3 Cottonseed Oil—Household cooking grade.
bility of regulatory limitations prior to use.
6.4 Mineral Oil, USP—Heavy grade, sp gr 0.875 to 0.905.
6.5 Kerosine.
2. Referenced Documents
6.6 Ethyl Alcohol (50 %) as described in Test Method
2.1 ASTM Standards:
D 543.
D 543 Test Method for Resistance of Plastics to Chemical
6.7 Any other standard or supplementary reagent listed in
Reagents
Test Method D 543.
D 618 Practice for Conditioning Plastics and Electrical
Insulating Materials for Testing 7. Test Specimen
D 882 Test Methods for Tensile Properties of Thin Plastic
7.1 The test specimens for plastic films shall be in the form
Sheeting
of squares 50 6 0.25 mm (2 in.) on each side. At least three
D 883 Terminology Relating to Plastics
specimens of each sample shall be tested with each chemical
reagent.
3. Terminology
7.2 Nothing in this test method precludes the use of speci-
3.1 Definitions—For definitions of technical terms pertain-
mens of other dimensions or the making of other tests on the
ingtoplasticsusedinthistestmethod,seeTerminologyD 883.
same specimens after they have been exposed to the chemicals.
Another acceptable specimen is a disk 50 6 0.25 mm (2 in.) in
4. Significance and Use
diameter (total area 41.5 cm ), or a tension specimen 100 by 25
4.1 This test method is intended to be a rapid empirical test
mm (4 by 1 in.) as prescribed in Test Methods D 882. For such
to determine the loss of the plasticizer or other extractable
specimens, care should be taken that a proportionate amount of
chemical be used and that the container is of appropriate
ThistestmethodisunderthejurisdictionofASTMCommitteeD-20onPlastics
dimensions so that the specimen can be immersed in a
and is the direct responsibility of Subcommittee D20.15 on Thermoplastic Materi-
completely vertical position during the test. The amount of
als.
chemical used shall be approximately 8 mL/cm , counting the
Current edition approved Nov. 10, 1998. Published January 1998. Originally
area of both sides of the specimen.
published as D 1239 – 52T. Last previous edition D 1239 – 92.
Annual Book of ASTM Standards, Vol 08.01.
Annual Book of ASTM Standards, Vols 08.01 and 08.04.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D 1239
NOTE 3—Direct comparison of values should not be made between
end of the test. Determine a weight correction by conditioning
samplesofdifferentthicknesses,sincepercentageweightlossisafunction
anothersampleofthesamefilm,beforeimmersion,inthesame
of thickness.
manner as for the standard test, but immerse the specimens in
the particular chemical for only 5 min and then rinse and wipe
8. Conditioning
dry. Add the average percentage weight gain of this blank
8.1 Conditioning—Condition the test specimens at
sample to the average percentage weight loss; if the blank
23 6 2°C (73.4 6 3.6°F) and 50 6 5 % relative humidity for
sample has a weight loss by this procedure, do not make any
not less than 40 h
...
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