Fig. 3. Structural representations of Linear Alkylbenzene (LAB) isomers with a focus on the predominant C12 component. The top left (bottom left) of the figure displays the structural formula (3D structure) of Dodecylbenzene, the fundamental component of LAB, denoted as C18H30. The top right (bottom right) illustrates the structural formula (3D structure) of the positional isomer 2-Phenyl Dodecane. Note the variation in the attachment site of the benzene ring along the linear alkyl chain, which significantly influences the chemical properties of the isomer. While many other positional isomers exist in LAB, the basic component with a benzene ring attached to the end of the alkyl chain generally dominates the composition.
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