This standard specifies the requirements, sampling, test methods, inspection rules, and marking, labeling, packaging, transportation and storage requirements for 2-cyano-4-nitroaniline. This standard is applicable to the quality inspection of 2-cyano-4-nitroaniline products, which are mainly used in the dye industry. Molecular formula: CHON Relative molecular mass: 163.14 (according to the 2001 international relative atomic mass)