ASTM D 4471 : 2018
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
Standard Test Method for Pyridine Bases in Cresylic Acid by Direct Titration
Hardcopy , PDF
30-06-2022
English
25-07-2018
Important note : Users cannot be edited or removed once added to your Multi user PDF.| Committee |
D 16
|
| DocumentType |
Test Method
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| Pages |
3
|
| PublisherName |
American Society for Testing and Materials
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| Status |
Superseded
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| SupersededBy | |
| Supersedes |
1.1This test method covers the determination of pyridine and other basic nitrogen impurities in crude and refined cresylic acids streams, including mixtures.
1.2This test method is applicable for pyridine base levels of 0.001 % to 0.5 %.
1.3In 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.
1.4The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5This 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section 8.
1.6This 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 E 29 : 2013 : R2019 | Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications |
| ASTM E 29 : 2002 | Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications |
| ASTM D 4790 : 1999 | Standard Terminology of Aromatic Hydrocarbons and Related Chemicals |
| ASTM D 3852 : 1999 | Standard Practice for Sampling and Handling Phenol, Cresols, and Cresylic Acid |
| ASTM D 6809 : 2002 | Standard Guide for Quality Control and Quality Assurance Procedures for Aromatic Hydrocarbons and Related Materials |
| ASTM E 29 : 2022 | Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications |
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