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ASTM D4662-15

Historical Revision

Standard Test Methods for Polyurethane Raw Materials: Determination of Acid and Alkalinity Numbers of Polyols

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1.1 These test methods measure the acidic and basic constituents in polyols and other materials of high acidity or alkalinity that are soluble in mixtures of toluene and ethyl alcohol. These test methods do not apply to polyethers. (See Note 1.)

1.2 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.

Note 1: There is no known ISO equivalent to this standard.


5.1 These test methods are suitable for quality control, as specification tests, and for research. The acid and alkalinity numbers indicate the extent of a reaction with acids. The results are measures of batch-to-batch uniformity and are typically used as correction factors in calculating hydroxyl number.

SDO ASTM: ASTM International
Document Number D4662
Publication Date Sept. 1, 2015
Language en - English
Page Count 3
Revision Level 15
Supercedes
Committee D20.22
Publish Date Document Id Type View
July 1, 2020 D4662-20 Revision
Sept. 1, 2015 D4662-15 Revision
Aug. 1, 2008 D4662-08 Revision
Nov. 1, 2003 D4662-03 Revision
Nov. 10, 1998 D4662-98 Revision
Feb. 1, 2011 D4662-08R11E01 Reaffirmation