GB/T 30921.7-2016
ActiveTest method of purified terephthalic acid(PTA) for industrial use—Part 7: Determination of b* value—Color difference meter
工业用精对苯二甲酸（PTA）试验方法 第7部分：b*值的测定 色差计法
Application Summary AI generated
This standard specifies the color difference meter method for determining the b* value of purified terephthalic acid (PTA) used in industrial applications. It is applied in the chemical industry for quality control and testing of PTA, a key raw material in polyester production, to assess yellowness and ensure consistency in downstream manufacturing processes.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.