Abstract
An apparatus has been constructed for measuring the solubility of prograde soluble salts in water at high temperatures and pressures. The apparatus consists of a visually accessible cell thermostated in a rocking furnace. The apparatus allows for rapid, accurate solubility measurements for temperatures over 650 K and pressures up to 170 bars. The cell was constructed of platinum with sapphire windows and gold seals for corrosion resistance. A 3x telescope is used to observe the phase change in the cell. A key feature of the cell is the ability to control the system pressure. A section of small bore platinum tubing is used to connect the cell to an external pressure source. The tubing can remain open to the pressure source or be sealed off during a measurement. To minimize equilibration times, the entire apparatus was mounted to a rocking frame which can operate in the horizontal or vertical position. The apparatus was tested by measuring the solubility of NaCl in water at temperatures between 345 and 516 K at saturation pressure. Results are in good agreement with existing literature values.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
