ASTM-D4572 › Historical Revision Information
Standard Test Method for Rubber Chemicals - Wet Sieve Analysis of Sulfur
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Scope
1.1 This test method covers the evaluation of the particle size distribution of the coarse fraction of sulfur. It is limited to the measurement of those particles greater than 45 μm (No. 325 sieve).
1.2 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.
Significance and Use
3.1 This test method is used to evaluate sulfur for suitability as a rubber vulcanizing agent. Sulfur particles must be significantly small enough to dissolve in rubber during cure and produce a uniform network of cross-links. This test method is used as a quality control method to ensure that no excessively large sulfur particles are present and to see if the product follows a typical pattern of size distribution.
3.2 This procedure is necessary when problems of the sulfur caking occur with the use of the dry sieving procedure for particle size.
Keywords
sulfur; wet sieve;
To find similar documents by ASTM Volume:
09.01 (Rubber, Natural and Synthetic -- General Test Methods; Carbon Black)
To find similar documents by classification:
83.060 (Rubber Raw rubber, see 83.040.10)
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Document Number
ASTM-D4572-89(2017)
Revision Level
1989 R17 EDITION
Status
Superseded
Modification Type
Reapproval
Publication Date
March 1, 2017
Document Type
Test Method
Page Count
3 pages
Committee Number
D11.20