ASTM-D3643 Historical Revision Information
Standard Test Method for Acid Number of Certain Alkali-Soluble Resins

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Standard Test Method for Acid Number of Certain Alkali-Soluble Resins


1.1 This test method covers the measurement of the free acidity present in certain alkali-soluble resins.

1.2 This test method is not suitable for styrene-maleic anhydride resins.

1.3 The resin manufacturer should specify whether or not this test method may be used for his product(s).

1.4 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

This test method is used to determine the property of maleic anhydride resins functionality. Maleic acid anhydride resins functionality determines the utility of resin as well as being a significant quality control test.


acid number; alkali-soluble resins; free acid; polish; resins; titration

To find similar documents by ASTM Volume:

15.04 (Soaps and Other Detergents; Polishes; Leather; Resilient Floor Coverings)

To find similar documents by classification:

83.080.10 (Thermosetting materials Including ebonite Silicones, see 71.100.55)

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Document Number


Revision Level

1998 R04 EDITION



Modification Type


Publication Date

Aug. 1, 2004

Document Type

Test Method

Page Count

2 pages

Committee Number