GB/T 7716-2024 "coalescence grade propylene" stipulates the classification, technical requirements, test methods, sampling, inspection rules, signs, labels, accompanying documents, Encasement, transportation and storage conditions of propylene products for coalescence. The standard is applicable to evaluate the purity and impurity content of coalescence grade propylene to ensure its mass stability and safe use in industrial production. The standard refers to a number of relevant test methods and specifications, such as Gas chromatography, CG determination of hydrocarbon impurities, hydrogen, carbon monoxide, carbon dioxide, acetylene, oxygen and other trace components, as well as liquid sampling and online analysis methods. Through these detailed regulations, the traceability and conformity of coalescence grade propylene products in the supply chain are guaranteed to meet the diverse application requirements of industrial needs.