Dodecylbenzene Sulphonic Acid CAS 27176-87-0

Alkylbenzenes have a wide variety of technical uses. As an example, alkylbenzenes with a lot of carbon atoms ranging from 8 to 16 in the side chain are intermediates in the manufacturing of sulfonated detergents. Amongst them, in detergent and also surfactant product applications, alkylbenzene derivatives such as alkylbenzene sulfonates are made use of. Ecological regulations require these items to be naturally degradable. Alkylbenzenes with branched aliphatic chains can not be weakened from alkylbenzenes with straight chains by cardiovascular germs, and therefore accumulate in water discharged from factories utilizing such cleaning agents. It is well known that in order to be naturally degradable it is essential that the alkyl chain is straight, ie has extremely little or no branching and also only a small number, if any, of quaternary carbon atoms. Hence, direct alkyl benzenes have actually been the leading detergent intermediates since the early 1960s, driven by ecological requirements for the production of eco-friendly detergents.

Commercial growth of linear alkylbenzenes has concentrated on the removal of high pureness straight paraffins originated from hydrotreated kerosene feedstocks. Originally, these straight paraffins undergo dehydrogenation at less than full conversion to generate linear internal monoolefins. The alkylation of benzene to produce straight alkylbenzenes is performed making use of the dehydrogenation effluent, a combination of olefins and also paraffins, utilizing hydrofluoric acid as a catalyst. The conversion of olefins to alkylbenzenes allows for very easy fractional splitting up of unreacted direct paraffins and also recycling of unreacted direct paraffins to the dehydrogenation process. The resulting direct alkylbenzene item ends up being an artificial detergent intermediate for the manufacturing of straight alkylbenzene sulfonates, the major eco-friendly synthetic surfactants. Straight alkyl benzene sulfonates are still the leading main surfactants, yet their position in North America and Western Europe is frequently challenged by detergent alcohol by-products.