ASTM International

Standard Specification for Purified Terephthalic Acid (PTA)
 N D7976

Annotation

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.

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.

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

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

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.

Автоматический перевод:

Стандартная спецификация для Очищенной терефталевой кислоты (PTA)

Эта спецификация покрывает очищенную terephthalic кислоту (PTA) для использования в производстве полимеров. Некоторые примеры включают производство полиэстеров для волокна, нити, пряжи, фильма, покрытия, бутылки и приложений смолы.