GB/T 30921.1-2014
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) (English Version)

Standard No.: GB/T 30921.1-2014
Language: Chinese, Available in English version
Release Date: 2014
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 30921.1-2014

Scope: This part of GB/T 30921 specifies the high-performance liquid chromatography and high-efficiency liquid chromatography method for the determination of p-carboxybenzaldehyde (4-CBA) and p-toluic acid (p-TOL) in industrial purified terephthalic acid (PTA). capillary electrophoresis. The high performance liquid chromatography method specified in this part is suitable for the determination of purified terephthalic acid samples with 4-CBA and p-TOL contents above 2 mg/kg and 10 mg/kg respectively; high performance capillary electrophoresis method is suitable for 4 - Determination of purified terephthalic acid samples with CBA and p-TOL contents above 1 mg/kg and 5 mg/kg respectively.

GB/T 30921.1-2014 Referenced Document

GB/T 3723 Sampling of chemical products for industrial use--Safety in sampling
GB/T 6679 General rules for sampling solid chemical products
GB/T 6682 Water for analytical laboratory use.Specification and test methods
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values

2014 GB/T 30921.1-2014 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)