GB/T 32685-2016
Purified terephthalic acid (PTA) for industrial use (English Version)

Standard No.

GB/T 32685-2016

Language

Chinese, Available in English version

Release Date

2016

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 32685-2016

Scope

This standard specifies the technical requirements, test methods, inspection rules, packaging, marking, transportation, storage and safety requirements for industrial purified terephthalic acid (PTA). This standard applies to industrial purified terephthalic acid (PTA) obtained by oxidation and refining of petroleum p-xylene as raw material. This product is mainly used as a raw material for the production of polyester chips, long and short polyester fibers and chemical products. Molecular formula: C₈H₆O₄ Relative molecular mass: 166.13 (according to 2011 international relative atomic mass)

GB/T 32685-2016 Referenced Document

• GB/T 17521 Chemical reagent. N,N-dimethylformamide
• GB/T 30921.1 Test method of purified terephthalic acid (PTA) for industrial use.Part 1:Determination of concentrations of 4-carboxybenzaldehyde (4-CBA) and p-toluic acid (p-TOL)
• GB/T 30921.2 Test method of purified terephthalic acid (PTA) for industrial use.Part 2:Determination of metal content
• GB/T 30921.3 Test method of purified terephthalic acid (PTA) for industrial use.Part 3:Determination of water content
• GB/T 30921.4 Test method of purified terephthalic acid (PTA) for industrial use.Part 4: Determination of titanium content.Diantipyrylmethane photometric method
• GB/T 30921.5 Test method of purified terephthalic acid (PTA) for industrial use.Part 5:Determination of acid number
• GB/T 30921.6 Test method of purified terephthalic acid (PTA) for industrial use.Part 6:Determination of particle size distribution
• GB/T 30921.7 Test method of purified terephthalic acid (PTA) for industrial use.Part 7: Determination of b *value.Color difference meter
• GB/T 3143 Color determination method of liquid chemicals(Hazen unit--Platinum-cobalt scale)
• GB/T 3723 Sampling of chemical products for industrial use--Safety in sampling
• GB/T 6678 General principles for sampling chemical products
• GB/T 6679 General rules for sampling solid chemical products
• GB/T 7531 Determination of ignition residue for organic chemical products
• GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values

GB/T 32685-2016 history

• 2016 GB/T 32685-2016 Purified terephthalic acid (PTA) for industrial use