The diiodomethane (1) and water (2) binary system is discussed
in two parts; part 1 is diiodomethane (1) in water (2) and part 2 is water (2)
in diiodomethane (1).
Part 1. The solubility of diiodomethane (1) in water (2)
has been studied by four groups of workers. The experimental data of Gross and
Saylor (ref. 1) and Andrews and Keefer (ref. 2) are supported by the descriptions
of the methods used for determining the reported data. Details are not available
for methods, apparatus, and procedures used by van Arkel and Vles (ref. 3) and
O'Connell (ref. 4) for obtaining the solubility data.
The three solubility
values, see (refs. 1, 3, and 4), between 293.15 and 303.15 K compare favorably
with the selected value, whereas the datum of Andrews and Keefer (ref. 2) at
298.15 K is low and classified as doubtful. More accurate solubility determinations
are required, meanwhile, the tentative mass per cent solubility of diiodomethane (1) in water (2) at 303.15 K.
Part 2. The only datum available for
the solubility of water (2) in diiodomethane (1) is that of Hutchison and Lyon
(ref. 5) and so no Critical Evaluation is possible. The interested reader is
referred to the relevant Compilation Sheet for the experimental solubility.