ASTM C777-04(2009)

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:C777–93 (Reapproved 1999) Designation: C 777 – 04 (Reapproved 2009)
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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This test method covers the qualitative determination of the sulfide resistance of ceramic decorations on glass 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
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 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.
1.4This1.5 This test method generates hydrogen sulfide gas which is highly poisonous.
2. Referenced Documents
2.1 ASTM Standards:
C 224 Practice for Sampling Glass Containers
3. Summary of Test Method
3.1 One half of the specimens are immersed in a volume 4 % acetic acid solution that contains 1 mLof saturated sodium sulfide
solution per each 100 mL of the acetic acid solution in a suitable covered container at room temperature. The degree of attack is
determined by visual observation and physical testing of the specimen exposed to a hydrogen sulfide atmosphere.
4. Apparatus
4.1 Suitable Covered Container .
4.2 Stirrer.
4.3 Hot Plate.
4.4 Pipet.
4.5 Fume Hood, or other means of adequately exhausting H S produced during the test.
5. Reagents
5.1 Sodium Sulfide (Na S·9H O), reagent grade.
2 2
5.2 Acetic Acid (CH COOH, min 99.8 %), reagent grade.
6. Test Specimen
6.1 The decorated ware should be representative of the lot, or run, and should be taken in accordance with the principles stated
in Practice C 224.
6.2 Standard reference ware of known resistance must be run with each test.
7. Preparation of Test Solution
7.1 Make a 4 % volume acetic acid solution by adding to each 96 mL of distilled water 4 mL of acetic acid.
This test method is under the jurisdiction ofASTM Committee C-14 C14 on Glass and Glass Products , and was written by Subcommittee C14.10 on Glass Decoration
in cooperation with the Society of Glass Decorator’s Committee A-20.
Current edition approved Nov. 15, 1993. Published January 1994. Originally published as C777–74T. Last previous edition C777–93.
Current edition approved May 1, 2009. Published September 2009. Originally approved in 1974. Last previous edition approved in 2004 as C 777 – 04.
Annual Book of ASTM Standards, Vol 15.02.
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
C 777 – 04 (2009)
7.2 Dissolve an excess amount of sodium sulfide in warm (35 to 40°C) distilled water. Make sure there is undissolved sodium
sulfide left over. Cool to room temperature.
7.3
...