ASTM-D7724 Historical Revision Information
Standard Test Method for Carbon Black - Non-Dispersible Matter by Mechanical Flushing (NDM)

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Standard Test Method for Carbon Black—Non-Dispersible Matter by Mechanical Flushing (NDM)


1.1 This test method covers the determination of non-dispersible matter after mechanical water flushing of regular untreated carbon blacks. It may not be applicable to oil-treated carbon blacks because the oil would prevent proper wetting of the black by water.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

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.

Significance and Use

4.1 The quantity of non-dispersible matter of carbon black is important in some molded or extruded products as it may relate to the surface appearance of those products. The maximum amount of non dispersible matter and the minimum size of the particles to be analyzed in each application is normally determined and agreed to between the user and the producer.


carbon black; non-dispersible matter;; ICS Number Code 83.040.20 (Rubber compounding ingredients)

To find similar documents by ASTM Volume:

09.01 (Rubber, Natural and Synthetic -- General Test Methods; Carbon Black)

To find similar documents by classification:

83.040.20 (Rubber compounding ingredients Including carbon black, kaolin clay, etc.)

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Document Number


Revision Level

2011 R16 EDITION



Modification Type


Publication Date

July 15, 2016

Document Type

Test Method

Page Count

3 pages

Committee Number