ASTM D8062-23
(Specification)Standard Specification for Purified Terephthalic Acid (PTA) with Low p-Toluic Acid
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
- Technical Committee
- D16 - Aromatic, Industrial, Specialty and Related Chemicals
- Drafting Committee
- D16.02 - Oxygenated Aromatics
Relations
- Effective Date
- 01-Mar-2024
- Effective Date
- 01-Nov-2023
- Effective Date
- 01-Jun-2018
- Effective Date
- 01-Jan-2018
- Effective Date
- 01-Aug-2017
- Effective Date
- 15-Aug-2013
- Effective Date
- 01-Aug-2013
- Effective Date
- 01-Aug-2013
- Effective Date
- 01-Oct-2008
- Effective Date
- 15-Nov-2006
- Effective Date
- 15-Sep-2006
- Effective Date
- 01-May-2006
- Effective Date
- 01-Dec-2004
- Effective Date
- 10-May-2002
- Effective Date
- 10-May-1999
Overview
ASTM D8062-23 is the international ASTM standard specification for Purified Terephthalic Acid (PTA) with Low p-Toluic Acid content, specifically designed for use in the production of polyesters intended for superfine denier fiber applications. This document defines requirements for PTA's purity, composition, and testing methods to ensure consistent, high-quality raw materials essential in advanced polyester manufacturing. Following the guidelines of ASTM International, this standard promotes global trade, product safety, and performance by ensuring conformance to established chemical and physical properties.
Key Topics
- Purity Requirements: Defines maximum allowed concentrations for p-toluic acid, 4-carboxybenzaldehyde, water, iron, and total heavy metals in PTA.
- Testing and Measurement: References precise ASTM test methods for quantifying impurities and contaminants, such as D7881, D7882, D7883, D7884 for organic contaminants, and D8130, D8207 for metals.
- SI Units: All values must be reported in SI units, reinforcing international alignment.
- Sampling Practices: Specifies the use of standardized sampling protocols (Practice E300) for consistent quality assurance.
- Safety and Compliance: Emphasizes adherence to OSHA regulations and local environmental and safety standards, referencing relevant sources for health and regulatory requirements.
- Conformance: Stipulates results must be rounded according to Practice E29 for determining compliance with specification limits.
Applications
The primary application of ASTM D8062-23 is in the polyester production industry, especially for:
- Superfine Denier Fiber Manufacturing: Ensures that PTA used in spinning very fine polyester fibers (microfibers) meets strict impurity and heavy metals limits, which is crucial for textile performance, color consistency, and process reliability.
- Quality Control in Chemical Supply: Producers and buyers of PTA use this specification as a benchmark for product acceptance and quality assurance.
- Regulatory Compliance: Assists manufacturers in meeting global regulatory expectations for chemical purity and workplace safety.
- Research and Development: Supports innovation in polyester processing by providing a consistent material baseline.
High-purity PTA with minimal p-toluic acid and controlled levels of 4-carboxybenzaldehyde and metals is essential for advanced polyester products utilized in textiles, industrial applications, and other high-performance fabrics.
Related Standards
ASTM D8062-23 references several related test methods and standards, including:
- D7881, D7882, D7883, D7884: Methods for determining organic impurities (p-toluic acid and 4-carboxybenzaldehyde) in purified terephthalic acid through various chromatographic and capillary electrophoresis techniques.
- D8130, D8207: Test methods for determining the concentration of metals in PTA using plasma atomic emission spectrometry and atomic absorption spectrometry.
- D8063: Test method for determining water content in PTA by volumetric Karl Fischer titration.
- E29: Guide for using significant digits in test data.
- E300: Practice for sampling protocols in industrial chemicals.
- OSHA Regulations (29 CFR 1910.1000 & 1910.1200): Requirements for toxic and hazardous substances in workplace settings.
By integrating these standards, ASTM D8062-23 ensures that PTA quality is measurable, reliable, and consistent worldwide.
Keywords: purified terephthalic acid, PTA, low p-toluic acid, polyester production, superfine denier fiber, heavy metals, ASTM D8062-23, chemical purity, quality specification, textile raw materials
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Frequently Asked Questions
ASTM D8062-23 is a technical specification published by ASTM International. Its full title is "Standard Specification for Purified Terephthalic Acid (PTA) with Low <emph type="ital" >p</emph>-Toluic Acid". This standard covers: 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.
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.
ASTM D8062-23 is classified under the following ICS (International Classification for Standards) categories: 71.080.40 - Organic acids. The ICS classification helps identify the subject area and facilitates finding related standards.
ASTM D8062-23 has the following relationships with other standards: It is inter standard links to ASTM D7884-24, ASTM D7884-23, ASTM D8207-18, ASTM D8063-18, ASTM D8130-17, ASTM D7881-13, ASTM D7884-13, ASTM D7883-13, ASTM E29-08, ASTM E29-06b, ASTM E29-06a, ASTM E29-06, ASTM E29-04, ASTM E29-02e1, ASTM E29-93a(1999). Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
ASTM D8062-23 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
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
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
1910.1200
Barriers to Trade (TBT) Committee.
3. Terminology
2. Referenced Documents
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).
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 Subcommitte
...
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
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
2.1 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
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.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. 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
D8062 − 23
D8130 Test Method for Determination of Metals in Purified Terephthalic Acid (PTA) by Inductively
...
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