Chematur Engineering uses its own pump nitration technology in which nitration takes place in a pump in less than a second due to the intensive mixing. The pump nitration concept is applied for nitroaromatics such as nitrobenzene, feedstock for aniline and MDI, and dinitrotoluene, feedstock for TDI. The advantages with the process are high safety, no emergency power required, selective degree of nitration, minimum side reactions, high utilization of the nitric acid, and easy and accurate scaling up and down.