Calcium chloride, CaCl2 granulated - ( 250 g )
| Availability: | In stock | |
| Quantity: | x 1 ks | |
| Price with VAT: | 1,38 € ( 1,15 € without VAT ) | |
Product name
Calcium Chloride (CaCl 2) , calcium chloride (CaCl2) granules
Usage
Anhydrous calcium chloride can be used as drying agent in a desiccator for substances that weakly bind water. A mixture of ice and calcium chloride hexahydrate in a mass ratio of 1: 1.5, the temperature reached -49 ° C, therefore, is used as coolant in the cooling bath. 30% aqueous solution of calcium chloride solidified at -55 °C, therefore, is used for the protection of coal, rock and other loose material from freezing.
Solution of calcium chloride (concentration depending on the weather conditions) at winter road maintenance at higher wet the frost road salt based on sodium chloride in the road-sanding technology "humidified salts" (the weaker the frost moistened salt as brine). Calcium chloride has the strewing in 2001 of about 6 × more expensive than the de-icing salt, sodium chloride, however, is treated more quickly, and at lower temperatures. Eutectic point of an aqueous solution of the ideal concentration of about 30% may be -50 °C, for the current needs of the treatment of winter roads Calcium chloride is very effective down to -35 °C (NaCl only to about -5°C, up to -7 °C). According to the Swedish research has disrupts more concrete and therefore Sweden by taking it completely gave way.
Information
General features
Formula: CaCl2
Appearance: white powder or crystalic substance
Physical properties:
Molecular weight at 111.0 (anhydrous)
129.0 u (monohydrate)
147.0 u (dihydrate)
At 183.1 (tetra)
219.1 u (hexahydrate)
The molar mass of 110.99 g / mol (anhydrous)
129.0 g / mol (monohydrate)
147.02 g / mol (dihydrate)
183.05 g / mol (tetrahydrate)
219.08 g / mol (hexahydrate)
Mp 772.0 ° C (anhydrous)
260.0 ° C (monohydrate)
176.0 ° C (dihydrate)
45.5 ° C (tetrahydrate)
30.0 ° C (hexahydrate)
Bp 1600 ° C
Density 1.15 g / cm³ (anhydrous)
1.84 g / cm³ (dihydrate)
1.83 g / cm³ (tetra)
1.71 g / cm³ (20 ° C, hexahydrate)
Solubility:
anhydrous
59.5 g / 100 ml (0 ° C)
74.5 g / 100 ml (20 ° C)
158.0 g / 100 ml (100 ° C)
dihydrate
97.6 g / 100 ml (0 ° C)
130.1 g / 100 ml (20 ° C)
437.4 g / 100 ml (100 ° C)
hexahydrate
283.6 g / 100 ml (0 ° C)
3 639.8 g / 100 ml (30 ° C)
in polar solvents:
methanol
21.8 g / 100 ml (0 ° C)
29.2 g / 100 ml (20 ° C)
38.5 g / 100 ml (40 ° C)
ethanol
18.3 g / 100 ml (0 ° C)
25.8 g / 100 ml (20 ° C)
353.0 g / 100 ml (40 ° C)
acetone
0.01 g / 100 ml (20 ° C)