ASTM D8062-23

Standard Specification for Purified Terephthalic Acid (PTA) with Low <emph type="ital" >p</emph>-Toluic Acid

SCOPE
1.1 This specification covers purified terephthalic acid (PTA) for use in the production of polyesters for superfine denier fiber.  
1.2 The following applies to all specified limits in this specification: for purposes of determining conformance with this specification, an observed value or a calculated value shall be rounded off to the nearest unit in the last right-hand digit used in expressing the specification limit, in accordance with the rounding-off method of Practice E29.  
1.3 Consult current OSHA regulations, supplier’s Safety Data Sheets, and local regulations for all materials used in this specification.  
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 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.

General Information

• Status: Published
• Publication Date: 31-Dec-2022
• ICS: 71.080.40 - Organic acids
• Technical Committee: D16 - Aromatic, Industrial, Specialty and Related Chemicals
• Drafting Committee: D16.02 - Oxygenated Aromatics

Standards Content (Sample)

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.
Designation: D8062 − 23
Standard Specification for
1
Purified Terephthalic Acid (PTA) with Low p-Toluic Acid
This standard is issued under the fixed designation D8062; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* Terephthalic Acid by Capillary Electrophoresis with Re-
verse Voltage Mode
1.1 This specification covers purified terephthalic acid
D7882 Test Method for Determination of
(PTA) for use in the production of polyesters for superfine
4-Carboxybenzaldehyde and p-Toluic Acid in Purified
denier fiber.
Terephthalic Acid by Capillary Electrophoresis with Nor-
1.2 The following applies to all specified limits in this
mal Voltage Mode
specification: for purposes of determining conformance with
D7883 Test Method for Determination of
this specification, an observed value or a calculated value shall
4-Carboxybenzaldehyde and p-Toluic Acid in Purified
be rounded off to the nearest unit in the last right-hand digit
Terephthalic Acid by Weak Anion Exchange High Perfor-
used in expressing the specification limit, in accordance with
mance Liquid Chromatography
the rounding-off method of Practice E29.
D7884 Test Method for Determination of
1.3 Consult current OSHA regulations, supplier’s Safety 4-Carboxybenzaldehyde and p-Toluic Acid in Purified
Data Sheets, and local regulations for all materials used in this Terephthalic Acid by Reverse Phase High Performance
specification. Liquid Chromatography
D8063 Test Method for Water in Purified Terephthalic Acid
1.4 The values stated in SI units are to be regarded as
(PTA) by Volumetric Karl Fischer Titration
standard. No other units of measurement are included in this
D8130 Test Method for Determination of Metals in Purified
standard.
Terephthalic Acid (PTA) by Inductively Coupled Plasma
1.5 This standard does not purport to address all of the
Atomic Emission Spectrometric Method
safety concerns, if any, associated with its use. It is the
D8207 Test Method for Determination of Metals in Purified
responsibility of the user of this standard to establish appro-
Terephthalic Acid (PAT) by Atomic Absorption (AA)
priate safety, health, and environmental practices and deter-
Spectrometry
mine the applicability of regulatory limitations prior to use.
E29 Practice for Using Significant Digits in Test Data to
1.6 This international standard was developed in accor-
Determine Conformance with Specifications
dance with internationally recognized principles on standard-
E300 Practice for Sampling Industrial Chemicals
ization established in the Decision on Principles for the
2.2 Other Standards:
Development of International Standards, Guides and Recom-
OSHA Regulations, 29 CFR paragraphs 1910.1000 and
mendations issued by the World Trade Organization Technical
3
1910.1200
Barriers to Trade (TBT) Committee.
3. Terminology
2. Referenced Documents
2
3.1 Definitions:
2.1 ASTM Standards:
3.1.1 4-carboxybenzaldehyde, n—(C H O ) molecular
D7881 Test Method for Determination of
8 6 3
weight, 150.13; white to yellow crystalline solid or powder;
4-Carboxybenzaldehyde and p-Toluic Acid in Purified
melting point, 247 °C; abbreviated as 4-CBA (CAS #619-66-
9).
1
This specification is under the jurisdiction of ASTM Committee D16 on
3.1.2 p-toluic acid, n—(C H O ) molecular weight, 136.15;
8 8 2
Aromatic, Industrial, Specialty and Related Chemicals and is the direct responsi-
white crystalline solid or powder; melting point, 180 °C to
bility of Subcommittee D16.02 on Oxygenated Aromatics.
181 °C; abbreviated as p-TOL (CAS #99-94-5).
Current edition approved Jan. 1, 2023. Published February 2023. Originally
approved in 2019. Last previous edition approved in 2022 as D8062 – 22. DOI:
10.1520/D8062-23.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Available from U.S. Government Printing Office, Superintendent of
Standards volume information, refer to the standard’s Document Summary page on Documents, 732 N. Capitol St., NW, Washington, DC 20401-0001, http://
the ASTM website. www.access.gpo.gov.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D8062 − 23
3.1.3 purified terephthalic acid, n—(C H O ) molecular 5. Sampling
8 6 4
weight, 166
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D8062 − 22 D8062 − 23
Standard Specification for
1
Purified Terephthalic Acid (PTA) with Low p-Toluic Acid
This standard is issued under the fixed designation D8062; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope*
1.1 This specification covers purified terephthalic acid (PTA) for use in the production of polyesters for superfine denier fiber.
1.2 The following applies to all specified limits in this specification: for purposes of determining conformance with this
specification, an observed value or a calculated value shall be rounded off to the nearest unit in the last right-hand digit used in
expressing the specification limit, in accordance with the rounding-off method of Practice E29.
1.3 Consult current OSHA regulations, supplier’s Safety Data Sheets, and local regulations for all materials used in this
specification.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5 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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.6 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.
2. Referenced Documents
2
2.1 ASTM Standards:
D7881 Test Method for Determination of 4-Carboxybenzaldehyde and p-Toluic Acid in Purified Terephthalic Acid by Capillary
Electrophoresis with Reverse Voltage Mode
D7882 Test Method for Determination of 4-Carboxybenzaldehyde and p-Toluic Acid in Purified Terephthalic Acid by Capillary
Electrophoresis with Normal Voltage Mode
D7883 Test Method for Determination of 4-Carboxybenzaldehyde and p-Toluic Acid in Purified Terephthalic Acid by Weak
Anion Exchange High Performance Liquid Chromatography
D7884 Test Method for Determination of 4-Carboxybenzaldehyde and p-Toluic Acid in Purified Terephthalic Acid by Reverse
Phase High Performance Liquid Chromatography
D8063 Test Method for Water in Purified Terephthalic Acid (PTA) by Volumetric Karl Fischer Titration
1
This specification is under the jurisdiction of ASTM Committee D16 on Aromatic, Industrial, Specialty and Related Chemicals and is the direct responsibility of
Subcommittee D16.02 on Oxygenated Aromatics.
Current edition approved Jan. 1, 2022Jan. 1, 2023. Published January 2022February 2023. Originally approved in 2019. Last previous edition approved in 20212022 as
D8062 – 21.D8062 – 22. DOI: 10.1520/D8062-22.10.1520/D8062-23.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D8062 − 23
D8130 Test Method for Determination of Metals in Purified Terephthalic Acid (PTA) by Inductively Coupled Plasma Atomic
Emission Spectrometric Method
D8207 Test Method for Determination of Metals in Purified Terephthalic Acid (PAT) by Atomic Absorption (AA) Spectrometry
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E300 Practice for Sampling Industrial Chemicals
2.2 Other Standards:
3
OSHA Regulations, 29 CFR paragraphs 1910.1000 and 1910.1200
3. Terminology
3.1 Definitions:
3.1.1 4-carboxybenzaldehyde, n—(C H O ) molecular weight, 150.13; white to yellow crystalline solid or powder; melting point,
8 6 3
247 °C; abbreviated as 4-CBA (CAS #619-66-9).
3.1.2 p-toluic acid, n—(C H O ) molecular weight, 136.15; white crystalline solid or powder; melting point, 180 °C to 181 °C;
8 8 2
abbreviated as p-TOL (CAS #99-94-5).
3.1.3 purified terephthalic acid, n—(C H O ) molecular weight, 166.13, w
...