How do xylidine mixture isomers trade globally and what are the key logistics risks?

How do xylidine mixture isomers trade globally and what are the key logistics risks?
Xylidine isomers, including 2,6-dimethylaniline and N,N-dimethylaniline, are classified as Class 6.1 dangerous goods under UN 1711 and UN 2253 respectively, with packing group II. They require export inspection in China and strict compliance with IMDG rules for sea freight. Shanghai port handles these shipments to destinations like Osaka and Jakarta, but the Yangtze River protection law restricts some toxic Class 6.1 cargoes at outer port terminals. Logistics require dangerous goods declarations, UN-marked packaging, and proper labeling. China's 2019 trade data showed imports of 904 tons and exports of 1,651 tons, with both declining year-on-year, reflecting softer downstream demand in dyes and pharmaceuticals.