3,4',5-Trichloro-biphenyl-4-yl 2,2,2-trichloro-ethyl sulfate.

Crystals of the title compound, C14H8Cl6O4S, are twinned by inversion, with unequal components [0.85 (3):0.15 (3)]. The asymmetric unit contains two independent mol-ecules that are related by a pseudo-inversion center. The Car-O [1.393 (9) and 1.397 (9) Å] and ester S-O bond lengths [1.600 (5) and 1.590 (5) Å] of both mol-ecules are comparable to the structurally related 2,3,5,5-trichloro-biphenyl-4-yl 2,2,2-trichloro-ethyl sulfate. The dihedral angles between the benzene rings in the two mol-ecules are 37.8 (2) and 35.0 (2)°.