| Popis: |
Current JP-5 jet fuels have been observed to contain significantly greater concentrations of aromatic hydrocarbons than had been reported for earlier JP-5 samples. Water solubility is a very important property of jet fuels and is greatly influenced by aromatic concentration. For these reasons, a study was made of current JP-5 fuel samples to determine whether they might exhibit a greater water solubility than that of earlier JP-5 fuels. Water solubility measurements of ten relatively recent JP-5 fuel samples were determined at 10, 25, and 40 deg C. The water solubilities, on the average, were about 25% greater than that from earlier literature data. This suggests that the increased aromatic content plays a part in the increased water solubility. The water solubilities were found to vary with temperature in accordance with the Van't Hoff equation as is normal with hydrocarbon mixtures. The straight line plots of the logarithm of concentration vs. reciprocal temperature gave typical slopes and intercepts. |
