ASTM D1712-96

Standard Practice for Resistance of Plastics 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 may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety problems 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 5.

General Information

• Status: Historical
• Publication Date: 09-Nov-1996
• ICS: 83.080.01 - Plastics in general
• Technical Committee: D20 - Plastics
• Drafting Committee: D20.50 - Durability of Plastics

Relations

• Replaced By: ASTM D1712-03 - Standard Practice for Resistance of Plastics to Sulfide Staining
• Effective Date: 10-Mar-2003

Standards Content (Sample)

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 1712 – 96
Standard Practice for
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 Prepare the solution by rapidly bubbling hydrogen sulfide gas
(Note 2) through water. Five minutes of bubbling is sufficient
1.1 This practice covers the determination of the resistance
for 100 to 150 mL of water at room temperature (approxi-
of plastics to staining in the presence of sulfides.
mately 23°C).
1.2 The values stated in SI units are to be regarded as the
standard.
NOTE 2—Hydrogen sulfide gas may be obtained commercially as
1.3 This standard does not purport to address all of the
compressed gas in cylinders.
safety concerns, if any, associated with its use. It is the
6. Precautions
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- 6.1 Hydrogen sulfide is a highly toxic gas and must be
handled only in a suitably ventilated area such as a hood. Avoid
bility of regulatory limitations prior to use. For specific
precaution statements, see Section 6. breathing of vapors.
NOTE 1—There is no equivalent ISO standard.
7. Sampling
7.1 Sampling shall be in accordance with the pertinent
2. Referenced Documents
considerations outlined in Practice D 1898.
2.1 ASTM Standards:
D 618 Practice for Conditioning Plastics and Electrical
8. Test Specimens
Insulating Materials for Testing
8.1 Test specimens shall be representative of the particular
D 883 Terminology Relating to Plastics
plastic composition being tested. Size and shape of test
D 1898 Practice for Sampling of Plastics
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
3. Terminology
width by the thickness of the composition being tested, have
3.1 Definitions: For definitions of terms used in this prac-
been found suitable for this test.
tice, refer to Terminology D 883.
9. Conditioning
4. Significance and Use
9.1 Conditioning—Condition the test specimens at 23 6
4.1 Plastic compositions containing salts of lead, cadmium,
2°C (73.4 6 3.6°F) and 50 6 5 % relative humidity for not less
copper, antimony, and certain other metals (as stabilizers,
than 40 h prior to test in accordance with Procedure A of
pigments, driers, or fillers) may stain due to the formation of a
Practice D 618 for those tests where conditioning is required.
metallic sulfide when in contact with external materials that
In cases of disagreement, the tolerances shall be6 1°C
contain sulfide. The external sulfide source may be liquid,
(61.8°F) and 62 % relative humidity.
solid, or gas. Examples of materials that may cause sulfide
9.2 Test Conditions—Conduct tests in the standard labora-
stains are rubber, industrial fumes, foods, kraft paper, etc. This
tory atmosphere of 23 6 2°C (73.4 6 3.6°F) and 50 6 5%
practice provides a means of estimating the relative suscepti-
relative humidity, unless otherwise specified in the test meth-
bility of plastic composition to sulfide staining.
ods or in this specification. In cases of disagreements, the
tolerances shall be6 1°C (61.8°F) and 62 % relative humid-
5. Reagent
ity.
5.1 Hydrogen Sulfide Solution—A freshly prepared satu-
rated solution of hydrogen sulfide (Caution, see Section 6).
10. Procedure
10.1 Using a 250-mL beaker or equivalent, immerse ap-
This practice is under the jurisdiction of ASTM Committee D-20 on Plastics
proximately half of each specimen (Note 3) in the saturated
and is the direct responsibility of
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