ASTM D 7884 : 2020
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Standard Test Method for Determination of 4-Carboxybenzaldehyde and p-Toluic Acid in Purified Terephthalic Acid by Reverse Phase High Performance Liquid Chromatography
Hardcopy , PDF
24-03-2024
English
02-12-2020
Important note : Users cannot be edited or removed once added to your Multi user PDF.| Committee |
D 16
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| DocumentType |
Test Method
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| Pages |
6
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| 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Superseded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 the 4-Carboxybenzaldehyde (4-CBA) and p-Toluic acid (p-TOL) in purified terephthalic acid (PTA) by reverse phase high performance liquid chromatography (HPLC). This method is applicable for 4-CBA from 2 to 500 mg/kg and for p-TOL from 10 to 500 mg/kg, respectively.
1.2In determining the conformance of the test results using this method to applicable specification, results shall be rounded off in accordance with the rounding-off method of Practice E29.
1.3The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4This 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.
1.5This 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 D 8062 : 2023 | Standard Specification for Purified Terephthalic Acid (PTA) with Low <emph type="ital" >p</emph>-Toluic Acid |
| ASTM D 7976 : 2014 : R2020 | Standard Specification for Purified Terephthalic Acid (PTA) |
| 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 E 691 : 2020 | Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method |
| ASTM E 691 : 2019 : EDT 1 | Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method |
| ASTM E 691 : 2023 | Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method |
| ASTM E 691 : 2022 | Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method |
| ASTM E 691 : 2009 | Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method |
| ASTM E 691 : 2021 | Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method |
| ASTM E 682 : 1992 : R2000 | Standard Practice for Liquid Chromatography Terms and Relationships |
| ASTM E 29 : 2022 | Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications |
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