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ASTM D1512-15b

Historical Revision

Standard Test Methods for Carbon Black—pH Value

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1.1 These test methods, Test Method A—Boiling Slurry and Test Method B—Sonic Slurry, are used to indicate the pH of the carbon black surface by measuring the pH of water in contact with the carbon black.

Note 1: The pH of the carbon black is often used in this industry to indicate the relative acidity or alkalinity of carbon black and will be used in the remainder of these test methods to describe this property.

Note 2: Test Method A and Test Method B do not always give the same results.

1.2 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.

1.3 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.


3.1 The pH level of a carbon black is known to affect the vulcanization of some rubber compounds.

SDO ASTM: ASTM International
Document Number D1512
Publication Date Dec. 1, 2015
Language en - English
Page Count 4
Revision Level 15b
Supercedes
Committee D24.31
Publish Date Document Id Type View
June 1, 2023 D1512-23 Revision
May 1, 2021 D1512-21 Revision
Dec. 1, 2015 D1512-15B Revision
Sept. 1, 2015 D1512-15A Revision
Jan. 1, 2015 D1512-15 Revision
Dec. 15, 2005 D1512-05 Revision
Nov. 1, 2020 D1512-15BR20 Reaffirmation
June 1, 2012 D1512-05R12 Reaffirmation
May 10, 2000 D1512-95R00 Reaffirmation