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ASTM D1386-98(2004)

ASTM D1386-98(2004)

Standard Test Method for Acid Number (Empirical) of Synthetic and Natural Waxes

2010-12-31 /Historical
Superseeded by:
Significance and Use:

This test method is used to determine the property of acid functionality. Acid functionality determines the utility of the wax as well as being a significant Quality Control test.


1.1 This test method covers the determination of the acid number of synthetic waxes and natural waxes. The number is obtained by direct titration of the material and indicates the amount of free acid present.

1.2 This test method, using an ethanol-xylene mixture, is applicable to all natural waxes, including carnauba. The test method is also applicable to oxidized microcrystalline waxes, oxidized Fischer-Tropsch, oxidized polyethylene, and montan esters.

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.

acid number; free acid; natural waxes; polish; synthetic waxes; titration; waxes
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