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ASTM D5629-99

Historical Revision

Standard Test Method for Polyurethane Raw Materials: Determination of Acidity in Low-Acidity Aromatic Isocyanates and Polyurethane Prepolymers

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1.1 This test method covers the acidity, expressed as ppm of hydrochloric acid, in aromatic isocyanate or polyurethane prepolymer samples of below 100 ppm acidity. The test method is applicable to products derived from toluene diisocyanate and methylene-bis-(4-phenylisocyanate) (see Note 1).

Note 1-There are no equivalent ISO standards.

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


SDO ASTM: ASTM International
Document Number D5629
Publication Date Nov. 10, 1999
Language en - English
Page Count 3
Revision Level 99
Supercedes
Committee D20.22
Publish Date Document Id Type View
March 1, 2023 D5629-23 Revision
April 1, 2016 D5629-16 Revision
Feb. 1, 2011 D5629-11 Revision
March 1, 2005 D5629-05 Revision
Nov. 10, 1999 D5629-99 Revision