The asymmetric unit of the title compound, C18H30O2, contains one half-mol-ecule situated on an inversion center. The alkyl chain adopts a fully extended all-trans conformation. The C atoms of the alkyl chain are almost coplanar, with a maximum deviation of 0.042 (6) Å from the mean plane,which is inclined to the central benzene ring by 6.80 (9)°. The crystal packing exhibits no short inter-molecular contacts.