ASTM D4274-21
Standard Test Methods for Testing Polyurethane Raw Materials: Determination of Hydroxyl Numbers of Polyols
- Standard No.
- ASTM D4274-21
- Release Date
- 2021
- Published By
- American Society for Testing and Materials (ASTM)
- Status
- Replace By
- ASTM D4274-23
- Latest
- ASTM D4274-23
- Scope
- 1.1?These 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. 1.1.1?Test Method A—Acetic Anhydride Pressure Bottle, recommended for polyesters
ASTM D4274-21 Referenced Document
- ASTM D1193 Standard Specification for Reagent Water
- ASTM D883 Standard Terminology Relating to Plastics*， 2024-02-01 Update
- 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 E222 Standard Test Methods for Hydroxyl Groups Using Acetic Anhydride Acetylation*， 2023-04-01 Update
- ASTM E2935 Standard Practice for Evaluating Equivalence of Two Testing Processes
- ASTM E456 Standard Terminology for Relating to Quality and Statistics
- ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
- ISO 14900 Plastics*， 2023-12-01 Update
- ISO 6796 Polyglycols for industrial use; Determination of hydroxyl number; Phthalic anhydride esterification method
ASTM D4274-21 history
- 2023 ASTM D4274-23 Standard Test Methods for Testing Polyurethane Raw Materials: Determination of Hydroxyl Numbers of Polyols
- 2021 ASTM D4274-21 Standard Test Methods for Testing Polyurethane Raw Materials: Determination of Hydroxyl Numbers of Polyols
- 2016 ASTM D4274-16 Standard Test Methods for Testing Polyurethane Raw Materials: Determination of Hydroxyl Numbers of Polyols
- 2011 ASTM D4274-11 Standard Test Methods for Testing Polyurethane Raw Materials: Determination of Hydroxyl Numbers of Polyols
- 2005 ASTM D4274-05 Standard Test Methods for Testing Polyurethane Raw Materials: Determination of Hydroxyl Numbers of Polyols
- 1999 ASTM D4274-99 Standard Test Methods for Testing Polyurethane Raw Materials Determination of Hydroxyl Numbers of Polyols
