Melting point, ionic liquids fused salts

Table 3-1. Melting points (fmp), boiling points (fbp), and liquid working ranges, At = tbp — fmp, of some fused inorganic and organic salt systems [27, 28], including a few room temperature ionic liquids (entries 17, 18, 21-28) [187-190], For binary or ternary eutectics, the figures in parentheses give the portions in cmol/mol.

It has just been argued that the conductivities of simple ionic liquids, on the one hand, and liquid sihca and water, on the other, are vastly different because a fused salt is an unassociated liquid (it consists of individual particles) whereas both molten silica and water are associated liquids with network structures. What is the situation with regard to the viscosities of fused salts, water, and fused silica Experiments indicate that whereas water and fused NaCl have similar viscosities not far above the melting points of ice and solid salt, respectively, fused silica is a highly viscous liquid (Table 5.46). Here then is an interesting problem. 

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