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This test method covers the determination of the isocyanate group (NCO) content of a urethane intermediate or prepolymer.
Formerly under the jurisdiction of Committee D01 on Paint and Related Coatings, Materials, and Applications, this test method was withdrawn in July 2019 in accordance with section 10.6.3 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.
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 and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section 8.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D841 Specification for Nitration Grade Toluene
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ASTM D2572-97(2010), Standard Test Method for Isocyanate Groups in Urethane Materials or Prepolymers (Withdrawn 2019), ASTM International, West Conshohocken, PA, 2010, www.astm.orgBack to Top