T/GPCIA 0005-2022 Extraction of carbon-based aromatic compounds
T/GPCIA 0005-2022 Extraction of carbon-based aromatic compounds
Basic Information
Scope
Scope: This document specifies the technical requirements, test methods, inspection rules, and marking, packaging, transportation, storage, and safety for the extraction of C8 aromatic hydrocarbons. This document applies to C8 aromatic hydrocarbons obtained by solvent extraction from styrene extraction units. Main technical content: Table 1 Technical requirements for extraction of C8 aromatic hydrocarbons Item Indicator Appearance Clear and transparent, no mechanical impurities Styrene, w% ≤3.0 C8 aromatic hydrocarbons, w% ≥80 C9 and above components, w% ≤0.85 DMT, mg/kg ≤10.0 Water content, mg/kg ≤600 a C8 aromatic hydrocarbons refer to ethylbenzene, xylene, and styrene. b C9 and above components refer to all components following ethylbenzene (excluding xylene and styrene) in the chromatographic peak order.