Aniline is one of the most important intermediates in the dye industry. In the dye industry, it can be used to produce acid ink blue G, acid mordant BS, acid bright yellow, direct orange S, direct pink, indigo, disperse yellow brown, cationic pink FG and reactive Brilliant Red X-SB, etc.; in terms of organic pigments, it is used to make golden red, golden red g, scarlet powder, phenol cyanine red, oil-soluble black, etc.