ASTM C777-93(1999)

Standard Test Method for Sulfide Resistance of Ceramic Decorations on Glass

SCOPE
1.1 This test method covers the qualitative determination of the sulfide resistance of ceramic decorations on glass in order to assure the necessary durability of the decoration.  
1.2 This test method provides an indication of performance when and if the decorations are exposed to sulfide attack.  
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.  
1.4 This test method generates hydrogen sulfide gas which is highly poisonous.

General Information

• Status: Historical
• Publication Date: 09-Apr-1999
• ICS: 97.040.60 - Cookware, cutlery and flatware
• Technical Committee: C14 - Glass and Glass Products
• Drafting Committee: C14.10 - Glass Decoration

Relations

• Replaced By: ASTM C777-04 - Standard Test Method for Sulfide Resistance of Ceramic Decorations on Glass
• Effective Date: 01-Oct-2004

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: C 777 – 93 (Reapproved 1999)
Standard Test Method for
Sulfide Resistance of Ceramic Decorations on Glass
This standard is issued under the fixed designation C 777; 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 5. Reagents
1.1 This test method covers the qualitative determination of 5.1 Sodium Sulfide (Na S·9H O), reagent grade.
2 2
the sulfide resistance of ceramic decorations on glass to assure 5.2 Acetic Acid (CH COOH, min 99.8 %), reagent grade.
the necessary durability of the decoration.
6. Test Specimen
1.2 This test method provides an indication of performance
when and if the decorations are exposed to sulfide attack. 6.1 The decorated ware should be representative of the lot,
or run, and should be taken in accordance with the principles
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the stated in Practice C 224.
6.2 Standard reference ware of known resistance must be
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- run with each test.
bility of regulatory limitations prior to use.
7. Preparation of Test Solution
1.4 This test method generates hydrogen sulfide gas which
7.1 Make a 4 % volume acetic acid solution by adding to
is highly poisonous.
each 96 mL of distilled water 4 mL of acetic acid.
2. Referenced Documents
7.2 Dissolve an excess amount of sodium sulfide in warm
(35 to 40°C) distilled water. Make sure there is undissolved
2.1 ASTM Standards:
C 224 Practice for Sampling Glass Containers sodium sulfide left over. Cool to room temperature.
7.3 Stir into each 100 mL of the 4 % acetic acid solution 1
3. Summary of Test Method
mL of saturated, clear, sodium sulfide solution for 2 or 3 min.
3.1 One half of the specimens are immersed in a volume A milk of sulfur will precipitate.
4 % acetic acid solution that contains 1 mL of saturated sodium
8. Procedure
sulfide solution per each 100 mL of the acetic acid solution in
a suitable covered container at room temperature. The degree 8.1 Place the test specimens and the reference standard of
known resistance into the test solution prepared according to
of attack is determined by visual observation and physical
testing of the specimen exposed to a hydrogen sulfide atmo- 7.3 at room temperature so that only half of the decoration is
immersed. Stir and cover.
sphere.
8.2 Remove specimens from solution after 15 min and allow
4. Apparatus
to air dry.
4.1 Suitable Covered Container. 8.3 Note the degree of attack after 15 min by visual
4.2 Stirrer. observation and grade.
4.3 Hot Plate. 8.4 Retain a duplicate piece of ware of each decoration
4.4 Pipet. under test without exposure as an aid in judging the degree of
4.5 Fume Hood, or other means of adequately exhausting attack on the specimens under test.
H S produced during the test.
9. Interpretation of Results
9.1 Visual Inspection:
9.1.1 Grade the decoration on the test specimen and refer-
This test method is under the jurisdiction of ASTM Committee C-14 on Glass
and Glass Products, and was written by Subcommittee C14.10 on Glass Decorat
...