Full Description

1.1These test methods measure the hydroxyl groups in polyester and polyether polyols containing primary and secondary hydroxyl groups. They also apply to many other hydroxyl-containing substances.

1.1.1Test Method A-Acetic Anhydride Pressure Bottle, recommended for polyesters.

1.1.2Test Method B-Phthalic Anhydride Pressure Bottle, recommended for polyethers and polyesters.

1.1.3Test Method C-Phthalic Anhydride Reflux, recommended for polyethers and polyesters.

1.1.4Test Method D-Imidazole-Catalyzed Phthalic Anhydride Pressure Bottle, recommended for polyethers, polyesters, polymer polyols, and amine-initiated polyols.

1.1.5Test Method E-Imidazole-Catalyzed Pyromellitic Dianhydride Esterification, recommended for polyols used for flexible and rigid polyurethane foams and urethane elastomers. It is recommended for polyester polyols, polyether polyols, amine-started polyols, and polymer polyols (polyacrylonitrile/copolystyrene-based).

1.2Another ASTM test method for measuring hydroxyl groups is Test Method E222.

1.3The values stated in SI units are to be regarded as the standard.

1.4This 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.

Note 1:This standard, ISO14900 and ISO6796 address the same subject matter, but differ in technical content.

Product Details

Published: 04/01/2016 Number of Pages: 10File Size: 1 file , 120 KBRedline File Size:2files, 230 KB