ASTM D1712-09(2014)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:D1712 −09 (Reapproved 2014)
Standard Practice for
Resistance of Plastics to Sulfide Staining
This standard is issued under the fixed designation D1712; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope 5. Reagent
1.1 This practice covers the determination of the resistance 5.1 Hydrogen Sulfide Solution—A freshly prepared satu-
of plastics to staining in the presence of sulfides. rated solution of hydrogen sulfide (Caution, see Section 6).
Prepare the solution by rapidly bubbling hydrogen sulfide gas
1.2 The values stated in SI units are to be regarded as the
(Note 2) through water. Five minutes of bubbling is sufficient
standard.
for 100 to 150 mL of water at room temperature (approxi-
1.3 This standard does not purport to address all of the
mately 23°C).
safety concerns, if any, associated with its use. It is the
NOTE 2—Hydrogen sulfide gas may be obtained commercially as
responsibility of the user of this standard to establish appro-
compressed gas in cylinders.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. For specific
6. Precautions
precaution statements, see Section 6.
6.1 Hydrogen sulfide is a highly toxic gas and must be
NOTE 1—There is no known ISO equivalent to this standard. handledonlyinasuitablyventilatedareasuchasahood.Avoid
breathing of vapors.
2. Referenced Documents
7. Sampling
2.1 ASTM Standards:
7.1 Sampling shall be in accordance with the pertinent
D618 Practice for Conditioning Plastics for Testing
material specification or as agreed to by customer and client.
D883 Terminology Relating to Plastics
8. Test Specimens
3. Terminology
8.1 Test specimens shall be representative of the particular
plastic composition being tested. Size and shape of test
3.1 Definitions: For definitions of terms used in this
practice, refer to Terminology D883. specimens are relatively unimportant. Specimens 100 6 25
mm (4 6 1 in.) in length by 13 6 6 mm (0.5 6 0.25 in.) in
width by the thickness of the composition being tested, have
4. Significance and Use
been found suitable for this test.
4.1 Plastic compositions containing salts of lead, cadmium,
copper, antimony, and certain other metals (as stabilizers,
9. Conditioning
pigments, driers, or fillers) may stain due to the formation of a
9.1 Conditioning—Condition the test specimens at 23 6
metallic sulfide when in contact with external materials that
2°C (73.4 6 3.6°F) and 50 6 10 % relative humidity for not
contain sulfide. The external sulfide source may be liquid,
less than 40 h prior to test in accordance with Procedure A of
solid, or gas. Examples of materials that may cause sulfide
Practice D618 for those tests where conditioning is required. In
stains are rubber, industrial fumes, foods, kraft paper, etc. This
cases of disagreement, the tolerances shall be 61°C (61.8°F)
practice provides a means of estimating the relative suscepti-
and 65 % relative humidity.
bility of plastic composition to sulfide staining.
9.2 Test Conditions—Conduct tests in the standard labora-
tory atmosphere of 23 6 2°C (73.4 6 3.6°F) and 50 6 10 %
relative humidity, unless otherwise specified in the test meth-
This practice is under the jurisdiction ofASTM Committee D20 on Plastics and
ods or in this specification. In cases of disagreements, the
is the direct responsibility of Subcommittee D20.50 on Durability of Plastics.
tolerances shall be 61°C (61.8°F) and 65 % relative humid-
Current edition approved May 1, 2014. Published May 2014. Originally
approved in 1960. Last previous edition approved in 2009 as D1712 – 09. DOI:
ity.
10.1520/D1712-09R14.
For referenced ASTM
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