Table I. Density Equations for Organic Melts
Salt Tributylbenzylphosphonium chloride Tributyl-2 :4-dichlorobenzylphosphonium chloride Tetra-n-butylammonium bromide Tetra-n-butylammonium iodide Tetra-n-hexylammonium iodide
Melting Point (" C.) 162-163 117-118 109-110 143-144 103.5-104.5
p=ff-pt
(g./cc.) 1.021
p x 10' (g./cc./0 C.) 5.48
Std. Dev. x io3 (G./ Cc.) 0.2
Temperature Range (" C.) 178-240
1.165 1.086 1.187 1.093
6.90 6.87 6.60 7.30
1.1 0.7 0.2 0.6
155-221 123-146 149-169 122-150
a
The phosphonium chlorides were the most stable, their percentage weight loss being
