26.    ALLGEMEINE OEL- UND FETT-ZEITUNG.  [Properties of Synthetic Kogasin Lubricants.]  Vol. 35, 1938, pp. 124-125.

               After referring to the Fischer-Tropsch process and the advantages the product has over coal and natural oils owing to its greater uniformity, reference is made to the control that can be exercised over the product.  Viscosity-temperature curve of oil boiling 125°-250° C. is as good as that of a Pennsylvania oil.  Winter-grade Kogasin oil corresponds very closely, both in viscosity and viscosity-temperature curve with a winger-grade natural oil.  The specific gravity is very low due to the high H content, which is also important in giving a low C formation in an internal-combustion engine.  Flash point of winter oil is rather low, but higher values can be obtained for summer and aircraft oils.  Other points are:  Very low setting point, complete freedom from S, and unlimited stability against the effect of O₂ and light.  On these accounts the oil can be used for transformers and switchgear.

              ALLISON, E.  See abs. 890.