Experimental and smoothed data are pre,ented for the O'olubility of methane in water for temperature, of 77. 100. 160, 220, 280, and 340'F at pre3sures to 10,000 psia.The minimum solubility phenomenon exists within this temperature range to pre"ures of 10.000 psia.

A preliminary investigation was made to determine the time required to attain equilibrium within the equilibrium cell for this, system.Experimental and smoothed data are presented for the solubility of ethane in water for temperatures of 100", 160 0 , 220 0 , 280 0 and 340 0 F at pressures to 10,000 psia.The minimum solubility phenomenon disappears at 10,000 psi a within this temperature range.

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COMPOSITIONS of the coexisting vapor and liquid phases have previously been reported over the temperature range of 100°to 250°F. (1). This work extends the range from -80°to 280°F. EXPERIMENTALWindowed equilibrium cells of stainless steel construction were designed to withstand 5000 p.s.i. pressure at temperatures up to 400°F. Calibrated thermocouples inserted at several places within the cells were used to measure the temperature of the equilibrium fluids. Bourdon-type gages, calibrated against a deadweight tester, were used to indicate the pressure inside the equilibrium cells. Equilibrium was attained by circulating the vapor from the top of the cells through magnetic-piston pumps and into the bottom of the cells.The low temperature data were obtained in a 500 c.c.

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