1.1 This test method covers the determination of the isocyanate group (NCO) content of a urethane intermediate or prepolymer.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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. For specific hazard statements, see Section 8.
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.
ASTM D2572-19 Referenced Document
ASTM D841 Standard Specification for Nitration Grade Toluene
ASTM D2572-19 history
2019ASTM D2572-19 Standard Test Method for Isocyanate Groups in Urethane Materials or Prepolymers
1997ASTM D2572-97(2010) Standard Test Method for Isocyanate Groups in Urethane Materials or Prepolymers
2003ASTM D2572-97(2003)e1 Standard Test Method for Isocyanate Groups in Urethane Materials or Prepolymers
1997ASTM D2572-97 Standard Test Method for Isocyanate Groups in Urethane Materials or Prepolymers