557.    CHLOSTA, J.  [Wash-Oil Problem.]  Oel u. Kohle, vol. 37, 1941, p. 961-962; Chem. Abs., vol. 37, 1943, p. 6110.

      Paraffin oils from brown-coal tar and low-viscous oils from the Fischer-Tropsch hydrocarbons synthesis process are both being successfully used for benzene scrubbing.