118.14 ±0.1 (0.41 ± 0.24) 0.09 72.37 98.25 ± 0.05 (0.19 ± 0.03) 0.01 65.20 63.63 ± 0.06 (0.0 ± 0.07) 0.05 64.90 63.05 ± 0.08 (0.12 ±0.10) 0.08 60,10 46.46 ± 0.03 (0.34 ± 0.05) 0.05 54,12 31.168 ± 0.008 1.64 ± 0.04 6.2 0.02 49.40 21.287 ±0.004 3.95 ± 0.01 5.2 0.04 43.33" 10.760 ± 0.001 9.86 ± 0.03 3.9 0.07 °Values at 30°, see ref 12.account the influence on the association of the specific ion-solvent interactions connected to the solvent structure.

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Samples of grade A Monel and grade A nickel were subjected statically in a single reactor to an undiluted atmosphere of gaseous fluorine at pressures up to one atmosphere absolute and temperatures up to 1500°F. The rate of consumption of fluorine on the mixed Monel and nickel saniples was followed by a press\ire-drop technique at 1100 and ISOO^F., but was found to be too rapid to be followed accurately at 1500''F. The grade A Monel was conservatively estimated to have consumed at least ^i-O times as much fluorine as the grade A nickel during the entire period of this exploratory investigation. Consequently, Monel metal was eliminated from further consideration as a material of construction for equipment exposed to fluorine at temperat\ires higher than 1300°F.

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