from The Century Dictionary.
- noun A definite mixture of ice and any crystallized salt obtained by freezing a saturated aqueous solution of the salt.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Chem.) A substance, as salt, ammonium chloride, etc., which crystallizes with water of crystallization only at low temperatures, or below the freezing point of water.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun chemistry Any
saltthat forms crystalscontaining water of crystallizationonly at low temperatures
from Wiktionary, Creative Commons Attribution/Share-Alike License
The temperature of production of the cryohydrate is identical with the lowest temperature which can be produced on employing a mixture of ice and the salt as a freezing mixture or cryogen.
So long as this separation proceeds the temperature falls, but at length a point is reached at which the thermometer remains stationary until the whole is solidified, with the production of a cryohydrate.
This temperature of solidification is the same whether we start with a dilute or a saturated solution, and the composition of the cryohydrate is found to be constant.
It will be readily seen that in the formation of a cryohydrate we have an example of eutexia, since the constituents are present in such proportion as to give to the resultant compound body a minimum temperature of liquefaction.
a cryohydrate,  which possesses physical properties different from those of either the ice or the salt from which it is formed.
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