Abstract
The vapour pressure was determined at 18 temperatures in the range 30-75 degrees C, with a minimum of two results at each temperature. Measured vapour pressures were in the range 0.3 to 30 mTorr and are expressed by the following equation for the solid phase of this compound: lg p=11.74-(4631/T), where p is the vapour pressure in Torr and T is the absolute temperature in K. The 95% confidence limits for the respective constants of the equation are 0.26 and 85. The average difference between the raw data and the fitted data was 3.8%. Experimental conditions studied included effusion hole diameter and effusion time. The compound undergoes no phase change or decomposition below 143 degrees C, at which temperature there is a loss of HCl.
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