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ASTM E335 1996 Edition, March 10, 1996
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Standard Test Method for Hydroxyl Groups by Pyromellitic Dianhydride Esterification
Additional Comments: W/D NO S/S
Page Count:4
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1. Scope

1.1 This test method covers the determination of hydroxyl groups attached to primary and secondary carbon atoms in aliphatic and alicyclic compounds. It is not suitable for the determination of hydroxyl groups attached to tertiary carbon atoms. Phenolic hydroxyl groups do not react.

NOTE 1--Other methods for determination of hydroxyl groups are given in ASTM Test Method D 1957, Test Method for Hydroxyl Value of Fatty Oils and Acids, ASTM Methods D 2849, Methods of Testing Urethane Foam Polyol Raw Materials, ASTM Test Methods E 222, Test Methods for Hydroxyl Groups by Acetic Anhydride Acetylation, ASTM Test Method E 326, Test Method for Hydroxyl Groups by Phthalic Anhydride Esterification, ASTM Test Method E 567, Test Method for Tertiary Hydroxyl Groups with Hydrogen Bromide, and Test Methods D 2195, Test Methods for Pentaerythritol.

1.2 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. Specific precautionary statements are given in Section 9.