WARNING: Personnel using this standard should be familiar with formal laboratory procedures. This standard is not intended to address all safety issues that may arise from the use of this standard. It is the user's responsibility to establish a safety and health system and ensure compliance with national regulations. This standard specifies the requirements, sampling, test methods, inspection rules, signs, labels, packaging, transportation, storage and safety and safety technical instructions for o-chloro-p-nitroaniline. This standard applies to product quality control of o-chloro-p-nitroaniline, which is mainly used in dyes, pesticides, pigments and pharmaceutical industries. Molecular formula: CHClNO Relative molecular mass: 172.57 (according to the 2005 international relative atomic mass)