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ASTM D 7881 : 2020 : EDT 1

Current
Current

The latest, up-to-date edition.

Standard Test Method for Determination of 4-Carboxybenzaldehyde and p-Toluic Acid in Purified Terephthalic Acid by Capillary Electrophoresis with Reverse Voltage Mode
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

24-02-2021

1.1This test method2 covers the determination of 4-carboxybenzaldehyde (4-CBA) and p-toluic acid (p-TOL) in purified terephthalic acid (PTA) by capillary electrophoresis (CE) with reverse voltage mode and UV detection. It is applicable for 4-CBA from 3 to 400 mg/kg and for p-TOL from 8 to 400 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.

Committee
D 16
DocumentType
Test Method
Pages
8
ProductNote
ε1NOTE—Research report information in Section14was updated editorially in February 2021.
PublisherName
American Society for Testing and Materials
Status
Current
Supersedes

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 691 : 2020 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 : 2021 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
ASTM E 29 : 2022 Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

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