Standard Test Methods for Testing Polyurethane Raw Materials: Determination of Hydroxyl Numbers of Polyols
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 AAcetic Anhydride Pressure Bottle, recommended for polyesters.
1.1.2 Test Method BPhthalic Anhydride Pressure Bottle, recommended for polyethers and polyesters.
1.1.3 Test Method CPhthalic Anhydride Reflux, recommended for polyethers and polyesters.
1.1.4 Test Method DImidazole–Catalyzed Phthalic Anhydride Pressure Bottle, recommended for polyethers, polyesters, polymer polyols, and amine-initiated polyols.
1.1.5 Test 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).
1.2 Another ASTM test method for measuring hydroxyl groups is Test Method E222.
1.3 The values stated in SI units are to be regarded as the standard.
1.4 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.
Note 1—This standard and ISO 6796 address the same subject matter, but differ in technical content.
Please first log in with a verified email before subscribing to alerts.
Your Alert Profile lists the documents that will be monitored. If the document is revised or amended, you will be notified by email. You may delete a document from your Alert Profile at any time. To add a document to your Profile Alert, search for the document and click “alert me”.
Your Alert Profile lists the documents that will be monitored. If the document is revised or amended, you will be notified by email. You may delete a document from your Alert Profile at any time. To add a document to your Profile Alert, search for the document and click “alert me”.
Add to Alert
Already Subscribed to this document.
Your Alert Profile lists the documents that will be monitored. If the document is revised or amended, you will be notified by email. You may delete a document from your Alert Profile at any time. To add a document to your Profile Alert, search for the document and click “alert me”.
PDF Document format
Documents sold on the ANSI Webstore are in electronic Adobe Acrobat PDF format.
DRM protected documents
Some PDF files are protected by Digital Rights Management (DRM) at the request of the copyright holder. You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. Some copyright holders may impose other restrictions that limit document printing and copy/paste of documents.
Non printable documents
Those documents cannot be printed at the request of the copyright holder.
We have no amendments or corrections for this standard.
Are the documents at the ANSI Webstore in electronic Adobe Acrobat PDF format only?
Documents sold on the ANSI Standards Store are in electronic Adobe Acrobat PDF format.
Standard Subscriptions
This standard is also available to be included in Standards Subscriptions. Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards.
Subscription pricing is determined by: the specific standard(s) or collections of standards, the number of locations accessing the standards, and the number of employees that need access.
As the voice of the U.S. standards and conformity assessment system, the American National Standards Institute (ANSI) empowers its members and constituents to strengthen the U.S.
marketplace position in the global economy while helping to assure the safety and health of consumers and the protection of the environment.
