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ASTM D6099-24

Current Revision

Standard Test Method for Polyurethane Raw Materials: Determination of Acidity in Moderate to High Acidity Aromatic Isocyanates

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1.1 This test method determines the acidity, expressed as parts per million (ppm) of HCl, in aromatic isocyanate samples of greater than 100–ppm acidity. The test method is applicable to products derived from toluene diisocyanate and methylene-bis-(4–phenylisocyanate) (see Note 1).

Note 1: This test method is equivalent to ISO 14898, Test Method A.

1.2 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 This test method can be used for research or for quality control to characterize aromatic isocyanates and prepolymers of moderate to high acidity. Acidity correlates with performance in some polyurethane systems.

SDO ASTM: ASTM International
Document Number D6099
Publication Date Feb. 1, 2024
Language en - English
Page Count 3
Revision Level 24
Supercedes
Committee D20.22
Publish Date Document Id Type View
Feb. 1, 2024 D6099-24 Revision
Aug. 1, 2018 D6099-18 Revision
Sept. 1, 2013 D6099-13 Revision
Nov. 15, 2008 D6099-08 Revision
March 10, 2003 D6099-03 Revision
April 10, 1997 D6099-97 Revision