ASTM D5376-06(2017)
Standard Test Method for Rubber Compounding Materials&x2014;Determination of the Basic Nitrogen Content in Rubber Antioxidant: Polymerized TMQ

Standard No.

ASTM D5376-06(2017)

Release Date

2006

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D5376-06(2021)

Latest

ASTM D5376-06(2021)

Scope

5.1 This test method is designed to determine the nitrogen content of oligomeric 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ) antioxidant. TMQ is used for heat protection of vulcanized rubber.

5.2 This test method is suitable for assessing product specifications since nitrogen content is related to product performance, that is, antioxidant efficiency and heat protection. For comparison of product quality at different production facilities sufficient interlaboratory accuracy and precision are required.

1.1 This test method covers the determination of the nitrogen content of polymerized 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ). It is based on a potentiometric titration of an acetone solution of TMQ with perchloric acid in acetic acid.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3 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.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM D5376-06(2017) Referenced Document

• ASTM D4483 Standard Practice for Determining Precision for Test Method Standards in the Rubber and Carbon Black Industries

ASTM D5376-06(2017) history

• 2021 ASTM D5376-06(2021) Standard Test Method for Rubber Compounding Materials—Determination of the Basic Nitrogen Content in Rubber Antioxidant: Polymerized TMQ
• 2006 ASTM D5376-06(2017) Standard Test Method for Rubber Compounding Materials&x2014;Determination of the Basic Nitrogen Content in Rubber Antioxidant: Polymerized TMQ
• 2006 ASTM D5376-06(2012) Standard Test Method for Rubber Compounding Materialsmdash;Determination of the Basic Nitrogen Content in Rubber Antioxidant: Polymerized TMQ
• 2006 ASTM D5376-06 Standard Test Method for Rubber Compounding Materials8212;Determination of the Basic Nitrogen Content in Rubber Antioxidant: Polymerized TMQ
• 1993 ASTM D5376-93(2002) Standard Test Method for Rubber Chemicals8212;Determination of the Percent Nitrogen in Rubber Antioxidant : Polymerized TMQ
• 1998 ASTM D5376-93(1998) Standard Test Method for Rubber Chemicals-Determination of the Percent Nitrogen in Rubber Antioxidant Polymerized TMQ