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ASTM D4471

2010 Edition, January 1, 2010

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Standard Test Method for Pyridine Bases in Cresylic Acid by Direct Titration



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Product Details:

  • Revision: 2010 Edition, January 1, 2010
  • Published Date: January 1, 2010
  • Status: Active, Most Current
  • Document Language: English
  • Published By: ASTM International (ASTM)
  • Page Count: 3
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

This test method covers the determination of pyridine and other basic nitrogen impurities in crude and refined cresylic acids streams, including mixtures.

This test method is applicable for pyridine base levels of 0.001 % to 0.5 %.

In determining the conformance of the test results using this method to applicable specifications, results shall be rounded off in accordance with the rounding-off method of Practice E29.

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

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. For specific hazard statements, see Section 8.

*A Summary of Changes section appears at the end of this standard.