T/AQB 51-2023 Industrial p-chlorophenylaonner
T/AQB 51-2023 Industrial p-chlorophenylaonner
Basic Information
Scope
Main technical content: Tetrachlorophthalic anhydride is used in pharmaceuticals, pesticides, phthalocyanine-based green pigments, and intermediates for toner dyes. Based on the production situation of tetrachlorophthalic anhydride and the requirements of users, standard technical indicators such as the content of tetrachlorophthalic anhydride, melting point range, hexachlorophthalic anhydride content, moisture content, and tetrachlorophthalic acid content, as well as free acid content, have been set. According to the product quality ledgers of production enterprises, the indicator values have been determined. Based on the existing industry standards, the requirements for tetrachlorophthalic anhydride, test methods, inspection rules, marking, packaging, transportation, and storage have been specified.