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Standard Specification for Purified Terephthalic Acid (PTA) with Low p-Toluic Acid
NORMA vydaná dňa 15.3.2019
Označenie normy: ASTM D8062-19
Poznámka: NEPLATNÁ
Dátum vydania normy: 15.3.2019
Kód tovaru: NS-939983
Počet strán: 2
Približná hmotnosť: 6 g (0.01 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Keywords:
p-toluic acid, purified terephthalic acid, 4-carboxybenzaldehyde,, ICS Number Code 71.080.40 (Organic acids)
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. |
Posledná aktualizácia: 2024-09-28 (Počet položiek: 2 350 600)
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