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Properties of substance:

calcium chloride hexahydrate

Group of substances:

inorganic

Physical appearance:

colorless trigonal crystals

Empirical formula (Hill's system for organic substances):

H12CaCl2O6

Structural formula as text:

CaCl2 * 6H2O

Molar/atomic mass: 219.08

Melting point (°C):

29.9

Decomposition temperature (°C):

34

Solubility (g/100 g of solvent):

ethanol: very soluble [Ref.]
water: very easily soluble [Ref.]

Hygroscopic:

yes

Numerical data:

Critical relative humidity (%): 28.8

Density:

1.65 (20°C, g/cm3)

Standard molar Gibbs energy of formation ΔfG (298 K, kJ/mol)

-2213 (s) [Ref.]

Standard molar entropy S (298 K, J/(mol·K))

284.93 (s) [Ref.]

Enthalpy (heat) of fusion ΔfusH (kJ/mol)

40 (s) [Ref.]

Enthalpy (heat) of solution ΔsolH (kJ)

19.1 (s) [solvent: water, 18°C, 1 mol in 400 mol of water] [Ref.]

References:

  1. CRC Handbook of Chemistry and Physics. - 95ed. - CRC Press, 2014. - pp. 4-54
  2. Беликов В.Г. Учебное пособие по фармацевтической химии. - М.: Медицина, 1979. - pp. 54 [Russian]
  3. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 72 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru