1250.    GREBEL, A.  [Practical Substitute Fuels; Particularly Synthetic Fuels.]  Chaleur et Ind., vol. 6, 1925, pp. 273-282; Chem. Abs., vol. 19, 1925, p. 3007.

        From a detailed discussion of the problem, Grebel concludes that a successful gasoline substitute should fulfill at least the following conditions:  O less than 25%, H 7-16%, calorific value over 7,000 cal. per l., thermal potential (cal. per m.³ of perfect explosive mixture) over 750. flash point as little below 20° as possible, price per 1,000 cal. between that of petroleum and of gasoline.