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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 determination of hydroxyl groups attached to tertiary carbon atoms. Phenolic hydroxyl groups do not react and also certain sterically hindered hydroxyl groups may not react.Note 1-Other methods for determination of hydroxyl groups are given in Test Method D1957, Test Method for Hydroxyl Value of Fatty Oils and Acids , Methods D2849, Methods of Testing Urethane Foam Polyol Raw Materials , Test Methods E222, Test Methods for Hydroxyl Groups by Acetic Anhydride Acetylation , Test Method E335, Test Method for Hydroxyl Groups Using Pyromellitic Dianhydride Esterification , Test Method E567, Test Method for Tertiary Hydroxyl Groups with Hydrogen Bromide , and Test Methods D2195, 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.