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Calcium chloride hexahydrate

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Identification
Molecular formula
CaCl2•6H2O
CAS number
7774-34-7
IUPAC name
calcium;dichloride;hexahydrate
State
State
At room temperature, calcium chloride hexahydrate is typically a solid. Due to its hygroscopic nature, it may appear moist to the touch, especially in high humidity environments.
Melting point (Celsius)
30.00
Melting point (Kelvin)
303.15
Boiling point (Celsius)
100.00
Boiling point (Kelvin)
373.15
General information
Molecular weight
219.08g/mol
Molar mass
219.0800g/mol
Density
1.7100g/cm3
Appearence
Calcium chloride hexahydrate appears as a white crystalline solid. It is highly hygroscopic, meaning it can absorb moisture from the air readily, leading to a slick surface when exposed to humid conditions.
Comment on solubility

Solubility of Calcium Dichloride Hexahydrate

Calcium dichloride hexahydrate, with the chemical formula CaCl2·6H2O, demonstrates a notable level of solubility in water. This solubility is influenced by several factors, which can be summarized as follows:

  • High Water Solubility: Calcium dichloride hexahydrate is known for its high solubility in aqueous solutions, often reaching up to approximately 74.5 g per 100 mL of water at room temperature.
  • Dissociation in Solution: Upon dissolution, the compound dissociates into its constituent ions: Ca2+ and 2Cl-. This ionic dissociation contributes to its effectiveness as a drying agent and in various chemical reactions.
  • Temperature Dependence: Interestingly, the solubility of calcium dichloride hexahydrate tends to increase with temperature, making it even more soluble in warmer conditions.
  • Impact of Impurities: The presence of other salts can influence its solubility. For example, adding certain salts can lead to the precipitation of calcium salts, thereby affecting the overall solubility behavior.

In summary, the solubility of calcium dichloride hexahydrate in water is substantial, making it a versatile compound in both laboratory settings and industrial applications. As expressed in numerous sources, "Calcium dichloride hexahydrate is a highly soluble salt, perfect for various chemical processes." This characteristic is critical for its use in various fields, such as food processing, de-icing, and chemical synthesis.

Interesting facts

Interesting Facts About Calcium Dichloride Hexahydrate

Calcium dichloride hexahydrate, commonly known for its use in various applications, is a fascinating compound with numerous intriguing properties. Here are some compelling aspects that highlight its significance:

  • Composition: As a hydrate, calcium dichloride hexahydrate contains six molecules of water for every calcium dichloride molecule, demonstrating the interplay of inorganic chemistry with hydration phenomena.
  • Applications: This compound serves multiple purposes, including:
    • Ice melting on roads during winter due to its ability to lower the freezing point of water.
    • Food preservation, particularly in the cheese-making industry, where it helps in coagulating milk.
    • A desiccant, effectively absorbing moisture in various industrial processes.
  • Research Potential: Scientists are investigating its potential in carbon capture technology, showing how calcium compounds can help mitigate climate change.
  • Safety Considerations: While generally safe, handling this compound requires care due to its irritating properties on skin and eyes. Thus, it's essential to use appropriate safety gear.

In summary, calcium dichloride hexahydrate is more than just an ordinary salt; its hydrating properties and versatile applications make it a notable subject of study within chemical sciences. As researchers continue to explore its capabilities, this compound remains an important element in both industrial and environmental contexts.

Synonyms
calcium;dichloride;hexahydrate
dichlorocalcium hexahydrate
UNII-1D898P42YW
Calcium chloride hexahydrate, 98%
NS00127956
Calcium chloride hexahydrate, p.a., 99.0-105.0%
Calcium chloride hexahydrate, tested according to Ph.Eur.
Calcium chloride hexahydrate, Vetec(TM) reagent grade, 97%
Calcium chloride hexahydrate, meets analytical specification of Ph. Eur., E509, 97-103%, <=0.0001% Al