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ASTM D4572-89(2012)

Historical Reaffirmation

Standard Test Method for Rubber Chemicals—Wet Sieve Analysis of Sulfur

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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.

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.

This procedure is necessary when problems of the sulfur caking occur with the use of the dry sieving procedure for particle size.

SDO ASTM: ASTM International
Document Number D4572
Publication Date May 1, 2012
Language en - English
Page Count 2
Revision Level 89(2012)
Supercedes
Committee D11.20
Publish Date Document Id Type View
Nov. 1, 2021 D4572-21 Revision
Feb. 1, 2017 D4572-89R17 Reaffirmation
May 1, 2012 D4572-89R12 Reaffirmation
May 1, 2005 D4572-89R05 Reaffirmation
Nov. 10, 1999 D4572-89R99 Reaffirmation