ASTM D4662-20 PDF

Scope: 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.

ASTM D4662-20 Referenced Document

ASTM D1193 Standard Specification for Reagent Water
ASTM D883 Standard Terminology Relating to Plastics*， 2024-02-01 Update
ASTM E2935 Standard Practice for Evaluating Equivalence of Two Testing Processes*， 2021-06-01 Update
ASTM E456 Standard Terminology for Relating to Quality and Statistics

2020 ASTM D4662-20 Standard Test Methods for Polyurethane Raw Materials: Determination of Acid and Alkalinity Numbers of Polyols
2015 ASTM D4662-15 Standard Test Methods for Polyurethane Raw Materials: Determination of Acid and Alkalinity Numbers of Polyols
2008 ASTM D4662-08(2011)e1 Standard Test Methods for Polyurethane Raw Materials: Determination of Acid and Alkalinity Numbers of Polyols
2008 ASTM D4662-08 Standard Test Methods for Polyurethane Raw Materials: Determination of Acid and Alkalinity Numbers of Polyols
2003 ASTM D4662-03 Standard Test Methods for Polyurethane Raw Materials: Determination of Acid and Alkalinity Numbers of Polyols
1998 ASTM D4662-98 Standard Test Methods for Polyurethane Raw Materials Determination of Acid and Alkalinity Numbers of Polyols