Gasoline and Naphtha: Benzine Distillate Redistilled by Steam Heat, Cut by Baumé Gravity (Sadtler, in Thorpe 1913)

The light benzine cut from the crude still is distilled a second time, gently, with steam coils instead of fire, and split by gravity into a ladder of products from the lightest to the heaviest. Gasolene, the motor fuel of the day, is the 80 to 90° Baumé cut; naphtha comes at 70 to 76°. Variable: which cuts you keep. Sadtler lists five: cymogen 100-110° Bé, rhigolene 90-100°, gasolene 80-90°, naphtha 70-76° and benzine 62°. Source: Sadtler, American Petroleum, in Thorpe's Dictionary of Applied Chemistry, vol. 4 (1913). Not given: temperatures. Ours: switching receivers by the gravity of test portions. These vapours are extremely flammable: no fire or spark anywhere near. Picture drawn by Youblob.