Calcium chloride: Difference between revisions

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[[file:L CaCl2 d.jpg|thumb|left|800px|Figure 1: Solubility of calcium chloride in water. The molality ''m'' [n(CaCl<sub>2</sub>•xH<sub>2</sub>O)•kg(H<sub>2</sub>O)<sup>-1</sup>] is plotted against the temperature.]]
[[file:L CaCl2 d.jpg|thumb|left|800px|Figure 1: Solubility of calcium chloride in water. The molality ''m'' [n(CaCl<sub>2</sub>•xH<sub>2</sub>O)•kg(H<sub>2</sub>O)<sup>-1</sup>] is plotted against the temperature.]]
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Under standard conditions the hexahydrate of calcium  chloride [[Antarcticite]] is the stable form. The salt has got a high solubility which increases with increasing temperatures. The dehydration steps to the [[calcium chloride tetrahydrate]] and to [[sinjarite]] take place at temperatures of 30 °C and 45 °C, respectively.
Under standard conditions the hexahydrate of calcium  chloride [[Antarcticite]] is the stable form. The salt has got a high solubility in water which increases with increasing temperatures. The dehydration steps to the [[calcium chloride tetrahydrate]] and to [[sinjarite]] take place at temperatures of 30 °C and 45 °C, respectively.


==Hygroscopicity==
==Hygroscopicity==

Revision as of 14:00, 25 February 2015

Author: Amelie Stahlbuhk
back to Chloride


This article will be released soon.


Abstract[edit]

The different hydrate stages of calcium chloride are presented, as well as their behavior regarding solubility and hygroscopicity.

Hydrate stages[edit]

Sinjarite: CaCl2•2H2O
Calcium chloride tetrahydrate: CaCl2•4H2O
Antarcticite: CaCl2•6H2O

Solubility[edit]

Figure 1: Solubility of calcium chloride in water. The molality m [n(CaCl2•xH2O)•kg(H2O)-1] is plotted against the temperature.


Under standard conditions the hexahydrate of calcium chloride Antarcticite is the stable form. The salt has got a high solubility in water which increases with increasing temperatures. The dehydration steps to the calcium chloride tetrahydrate and to sinjarite take place at temperatures of 30 °C and 45 °C, respectively.

Hygroscopicity[edit]

Figure 2: Deliquescence behaviour of calcium chloride in the temperature range from -45 to 80 °C. The water activity aw is plotted against the temperature.


References[edit]

Literature[edit]