| abstract |
In the reaction of aromatic compounds with nitrating acids comprising HNO 3 and, if appropriate, H 2 SO 4 and/or H 2 O and/or H 3 PO 4 to form aromatic nitro compounds, according to the invention an amount of from 0.5 to 20,000 ppm of one or more surface-active substances from the group of the anionic, cationic, zwitterionic or nonionic surface-active substances is added to the reaction mixture. |