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Homepage>ASTM Standards>83>83.080>83.080.20>ASTM D7253-22 - Standard Test Method for Polyurethane Raw Materials: Determination of Acidity as Acid Number for Polyether Polyols
Released: 15.03.2022

ASTM D7253-22 - Standard Test Method for Polyurethane Raw Materials: Determination of Acidity as Acid Number for Polyether Polyols

Standard Test Method for Polyurethane Raw Materials: Determination of Acidity as Acid Number for Polyether Polyols

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Standard number:D7253-22
Released:15.03.2022
Status:Active
Pages:3
Section:08.03
Keywords:acidity; acid number; hydroxyl number; polyether polyols;
DESCRIPTION

1.1 This test method measures the acidic constituents in polyether polyols and reports the results as acid number. The typical acid number range is 0-0.1 mg KOH/g sample. (See Note 1.)

1.2 The values stated in SI units are to be regarded as standard.

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, 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.

1.4 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.

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