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New Process of Liquefying Oxygen 1

    Naturevolume 32pages584585 (1885) | Download Citation



    LIQUID ethylene, the preparation and use of which I have already explained, shows, at its boiling-point under the pressure of the atmosphere, a temperature of at least — 103° C., only some 10° from the critical temperature of oxygen (—113°C.). It is understood how in the expansion of compressed and cooled oxygen in the boiling ethylene the lowering of the temperature resulting from the expansion enabled me to establish “a tumultuous ebullition continuing an appreciable time.” In regulating the expansion so as to maintain a certain pressure in the tube, the oxygen is seen for some time completely liquefied. if. When by means of the air-pump the evaporation of liquid ethylene is accelerated, as was done by Faraday with protoxide of nitrogen and carbonic acid, its temperature is reduced much below the critical point of oxygen.

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