Document N8d0n8pqrOQXwXZVa2Qo6Mby

June 24, 1954 Dr. Robert W. Schiessler, Associate Professor of Chemistry, The Pennsylvania 3tate College, School of Chemistry and Physics, State College, Pa. Dear Bob: We have reviewed our needs for specific liquid hydrocarbons in the C15-C25 range. Since our tests will require 50-100 g. of such samples to obtain satisfactory results, we shall apparently . have to prepare them here. . I appreciate very much your offer to send us the details for preparation of these hydrocarbons. We should like to start with PSC 510 and PSC 559, or any isomer of either which you would consider a more likely paraffinic or naphthalene-type constituent of straight-run gas oils. Best regards, A. Wesley Horton AWH:fe SC-API-2550