ASTM D1712-03

Standard Practice for Resistance of Plastics to Sulfide Staining

SIGNIFICANCE AND USE
Plastic compositions containing salts of lead, cadmium, copper, antimony, and certain other metals (as stabilizers, pigments, driers, or fillers) may stain due to the formation of a metallic sulfide when in contact with external materials that contain sulfide. The external sulfide source may be liquid, solid, or gas. Examples of materials that may cause sulfide stains are rubber, industrial fumes, foods, kraft paper, etc. This practice provides a means of estimating the relative susceptibility of plastic composition to sulfide staining.
SCOPE
1.1 This practice covers the determination of the resistance of plastics to staining in the presence of sulfides.
1.2 The values stated in SI units are to be regarded as the standard.
1.3 This standard does not purport to address all of the safety concerns, 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. For specific precaution statements, see Section 6.
Note 1—There is no equivalent ISO standard.

General Information

• Status: Historical
• Publication Date: 09-Mar-2003
• ICS: 83.080.01 - Plastics in general
• Technical Committee: D20 - Plastics
• Drafting Committee: D20.50 - Durability of Plastics

Relations

• Replaces: ASTM D1712-96 - Standard Practice for Resistance of Plastics to Sulfide Staining
• Effective Date: 10-Mar-2003
• Replaced By: ASTM D1712-09 - Standard Practice for Resistance of Plastics to Sulfide Staining
• Effective Date: 01-Nov-2009

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 1712 – 03
Standard Practice for
1
Resistance of Plastics to Sulfide Staining
This standard is issued under the fixed designation D 1712; 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* (Note 2) through water. Five minutes of bubbling is sufficient
for 100 to 150 mL of water at room temperature (approxi-
1.1 This practice covers the determination of the resistance
mately 23°C).
of plastics to staining in the presence of sulfides.
1.2 The values stated in SI units are to be regarded as the
NOTE 2—Hydrogen sulfide gas may be obtained commercially as
standard. compressed gas in cylinders.
1.3 This standard does not purport to address all of the
6. Precautions
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- 6.1 Hydrogen sulfide is a highly toxic gas and must be
handled only in a suitably ventilated area such as a hood.Avoid
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. For specific breathing of vapors.
precaution statements, see Section 6.
7. Sampling
NOTE 1—There is no equivalent ISO standard.
7.1 Sampling shall be in accordance with the pertinent
material specification or as agreed to by customer and client.
2. Referenced Documents
2.1 ASTM Standards:
8. Test Specimens
2
D 618 Practice for Conditioning Plastics for Testing
8.1 Test specimens shall be representative of the particular
2
D 883 Terminology Relating to Plastics
plastic composition being tested. Size and shape of test
specimens are relatively unimportant. Specimens 100 6 25
3. Terminology
mm [4 6 1 in.] in length by 13 6 6 mm [0.5 6 0.25 in.] in
3.1 Definitions: For definitions of terms used in this prac-
width by the thickness of the composition being tested, have
tice, refer to Terminology D 883.
been found suitable for this test.
4. Significance and Use
9. Conditioning
4.1 Plastic compositions containing salts of lead, cadmium,
9.1 Conditioning—Condition the test specimens at 23 6
copper, antimony, and certain other metals (as stabilizers,
2°C [73.4 6 3.6°F] and 50 6 5 % relative humidity for not less
pigments, driers, or fillers) may stain due to the formation of a
than 40 h prior to test in accordance with Procedure A of
metallic sulfide when in contact with external materials that
Practice D 618 for those tests where conditioning is required.
contain sulfide. The external sulfide source may be liquid,
In cases of disagreement, the tolerances shall be 61°C
solid, or gas. Examples of materials that may cause sulfide
[61.8°F] and 62 % relative humidity.
stains are rubber, industrial fumes, foods, kraft paper, etc. This
9.2 Test Conditions—Conduct tests in the standard labora-
practice provides a means of estimating the relative suscepti-
tory atmosphere of 23 6 2°C [73.4 6 3.6°F] and 50 6 5%
bility of plastic composition to sulfide staining.
relative humidity, unless otherwise specified in the test meth-
ods or in this specification. In cases of disagreements, the
5. Reagent
tolerances shall be 61°C [61.8°F] and 62 % relative humid-
5.1 Hydrogen Sulfide Solution—A freshly prepared satu-
ity.
rated solution of hydrogen sulfide (Caution, see Section 6).
Prepare the solution by rapidly bubbling hydrogen sulfide gas
10. Procedure
10.1 Using a 250-mL beaker or equivalent, immerse ap-
1
This practice is under the jurisdiction ofASTM Committee D20 on Plastics and proximately half of each specimen (Note 3) in the saturated
is the direct responsibility of Subcommittee D20.50 on Durability of Plastics.
hydrogen sulfide solution for 15 min (Note 4). Cover the test
Current edition approved March 10, 2003. Published April 2003. Originally
container with a watch glass or aluminum foil during the test.
approved in 1960. Last previous edition approved in 1996 as D 1712 – 96.
2
Annual Book of ASTM Standards, Vol 08.01.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D1712–03
NOTE 3—It is recommended that a control material, whose tendency to
11. Report
sulfide stain is known, be included with each test series. This provides a
11.1 The report shall include the following:
reference point from series to series. Staining may be rated as more, less,
11.1.1 Complete identification of the material tested, includ-
or equal to that of the control.
ing type, source, manufacturer’s code numbers, form, previous
NOTE 4—If desired, addi
...