Logo

ASTM D4662-20

Current Revision

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

$61.00

$61.00

$109.80

$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 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

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

1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


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 July 1, 2020
Language en - English
Page Count 3
Revision Level 20
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