3448.    ---------------.  [TROPSCH, H.]  [Higher Boiling Constituents of Synthol.]  Ges. Abhandl. Kenntnis Kohle, vol. 7, 1925, pp. 75-77; Chem. Abs., vol. 21, 1927, p. 2779.

        Higher-boiling constituents of Synthol contain small quantities of viscous oils, which can be acetylated and, therefore, contain hydroxyl groups.  The least volatile constituents are solid and asphaltic.  Traces of a solid, paraffinic substance are obtained also.