ASTM D7976 - 14

    Standard Specification for Purified Terephthalic Acid (PTA)

    Active Standard ASTM D7976 | Developed by Subcommittee: D16.02

    Book of Standards Volume: 06.04


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    Abstract

    This specification establishes requirements for purified terephthalic acid (PTA) used in the manufacturing of polymers, including the production of polyesters for fiber, filament, yarn, film, coating, bottle and resin applications. 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. This specification covers properties and sampling of the material.

    This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

    1. Scope

    1.1 This specification covers purified terephthalic acid (PTA) for use in the manufacturing of polymers. Some examples include the production of polyesters for fiber, filament, yarn, film, coating, bottle and resin applications.

    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 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

    1.4 Consult current OSHA regulations, supplier’s Safety Data Sheets, and local regulations for all materials used in this specification.

    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 and health practices and determine the applicability of regulatory limitations prior to use.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    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

    E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

    E300 Practice for Sampling Industrial Chemicals


    ICS Code

    ICS Number Code 71.080.40 (Organic acids)

    UNSPSC Code

    UNSPSC Code 12352106(Organic acids or its substitutes)


    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/D7976-14

    Citation Format

    ASTM D7976-14, Standard Specification for Purified Terephthalic Acid (PTA), ASTM International, West Conshohocken, PA, 2014, www.astm.org

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