ASTM E222-17
Standard Test Methods for Hydroxyl Groups Using Acetic Anhydride Acetylation

Standard No.

ASTM E222-17

Release Date

2017

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM E222-23

Latest

ASTM E222-23

Scope

4.1 Hydroxyl is an important functional group, and knowledge of its content is required in many intermediate and end use applications. The test methods described herein are for the determination of primary and secondary hydroxyl groups and can be used for the assay of compounds containing them.

1.1 These test methods cover the determination of hydroxyl groups attached to primary and secondary carbon atoms in aliphatic and alicyclic compounds and phenols.

1.2 Three test methods are given as follows:

8199;	Sections
Test Method A (Pressure Bottle Method)	8199;8 – 14
Test Method B (Reflux Method)	16 – 22
Test Method C (Perchloric Acid Catalyzed Method)	24 – 30

1.2.1 Test Method A is recommended for general use. Test Method B is included to give a standard procedure for the method that has been used widely. Test Method C is recommended when the results are required in a minimum period of time or where ambient temperature for the reaction is desired.

1.2.2 The results obtained using Test Methods A and B will be essentially the same, but the results obtained using Test Method C will be higher (up to approximately 48201;% relative) than those obtained using the other two methods.

1.2.3 Statements on precision are included with each test method. The precision of Test Methods A and C is consistent over a wide range of hydroxyl content (tested over hydroxyl number range of 250 to 1600), whereas Test Method B is less precise at the higher hydroxyl content level than it is at the lower hydroxyl con......

ASTM E222-17 Referenced Document

• ASTM D1193 Standard Specification for Reagent Water
• ASTM D1957 Standard Test Method for Hydroxyl Value of Fatty Oils and Acids
• ASTM D2195 Standard Test Methods for Pentaerythritol
• ASTM D6809 Standard Guide for Quality Control and Quality Assurance Procedures for Aromatic Hydrocarbons and Related Materials
• ASTM E180 Standard Practice for Determining the Precision of ASTM Methods for Analysis and Testing of Industrial and Specialty Chemicals
• ASTM E200 Standard Practice for Preparation, Standardization, and Storage of Standard and Reagent Solutions for Chemical Analysis
• ASTM E203 Standard Test Method for Water Using Volumetric Karl Fischer Titration
• ASTM E326 
• ASTM E335 
• ASTM E567 

ASTM E222-17 history

• 2023 ASTM E222-23 Standard Test Methods for Hydroxyl Groups Using Acetic Anhydride Acetylation
• 2017 ASTM E222-17 Standard Test Methods for Hydroxyl Groups Using Acetic Anhydride Acetylation
• 2010 ASTM E222-10 Standard Test Methods for Hydroxyl Groups Using Acetic Anhydride Acetylation
• 2000 ASTM E222-00(2005)e1 Standard Test Methods for Hydroxyl Groups Using Acetic Anhydride Acetylation
• 2000 ASTM E222-00 Standard Test Methods for Hydroxyl Groups Using Acetic Anhydride Acetylation