Logo

ASTM D7389-07

Current Revision

Standard Test Method for Acid Number (Empirical) of Maleic Anhydride (MAH) Grafted Waxes

$73.00

$73.00

$131.40


Sub Total (1 Item(s))

$ 0.00

Estimated Shipping

$ 0.00

Total (Pre-Tax)

$ 0.00


Stay effortlessly up-to-date with the latest standard revisions. When new versions are released, they're automatically charged and delivered to you, ensuring seamless compliance.

...

1.1 This test method covers the determination of the acid number of maleic anhydride (MAH) grafted waxes. The number is obtained by direct titration of the material and indicates the amount of free acid present.

1.2 This test method is applicable to MAH-grafted waxes because it uses a special sample preparation step (7.1) that is not required for other waxes. The special sample preparation reverses the hydrolysis of acid anhydride that can occur during storage of the wax.

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 determine the free acid content of MAH-grafted waxes. The potential hydrolysis of the anhydride functionality of this wax in storage makes them unsuitable for determining free acid content by Test Method D 1386. Free acid content is a significant quality control test, and is a determinant of the utility of the wax.

SDO ASTM: ASTM International
Document Number D7389
Publication Date Oct. 1, 2007
Language en - English
Page Count 2
Revision Level 07
Supercedes
Committee D21.02
Publish Date Document Id Type View
Oct. 1, 2007 D7389-07 Revision
July 1, 2019 D7389-07R19 Reaffirmation
Oct. 1, 2012 D7389-07R12 Reaffirmation