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ASTM D4876-98

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Standard Test Method for Polyurethane Raw Materials Determination of Acidity of Crude or Modified Isocyanates (Withdrawn 2004)

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1.1 This test method determines the total acidity, expressed as HCl, of crude or modified isocyanates. The test method is applicable to products derived from toluene di iso cyanate, methylene-bis-(4-phenyl iso cyanate), and polymethylene polyphenyl iso cyanates. (See Note 1.)

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 problems, 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 hazards statements see 7.1 and Note 2.

Note 1-There is no equivalent ISO standard.

SDO ASTM: ASTM International
Document Number D4876
Publication Date Nov. 10, 1998
Language en - English
Page Count 3
Revision Level 98
Supercedes
Committee D20.22
Publish Date Document Id Type View
Nov. 10, 1998 D4876-98 Revision