Automatic determination of the bromine index and/or the bromine number in petroleum products


Standard methods exist for both indices; these differ mainly in the composition of the solvent mixtures used and the concentration of the titrants. The bromine index indicates the quantity of bromine in mg that reacts with 100 g of the sample. The bromine number indicates the consumption of bromine in g for 100 g sample. This means that both indices provide information on the content of substances that react with bromine. Usually these are compounds containing C=C double bonds. A qualitative separation of the different components is not possible with the described method.