Calcium chloride

Calcium chloride is an inorganic compoond, a saut wi the chemical formula CaCl2.

Calcium chloride
Structur o calcium chloride, (chlorine is green, calcium is gray)
Saumple o calcium chloride
Names
IUPAC name
Calcium chloride
Ither names
Calcium(II) chloride, calcium dichloride, E509
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
DrugBank
ECHA InfoCard 100.030.115
EC Nummer 233-140-8
E nummer E509 (acidity regulators, ...)
RTECS nummer EV9800000
UNII
Properties
CaCl2
Molar mass 110.98 g·mol−1
Appearance White pouder, hygroscopic
Odour Odourless
Density
  • 2.15 g/cm3 (anhydrous)
  • 2.24 g/cm3 (monohydrate)
  • 1.85 g/cm3 (dihydrate)
  • 1.83 g/cm3 (tetrahydrate)
  • 1.71 g/cm3 (hexahydrate)[1]
Meltin pynt 772–775 °C (1,422–1,427 °F; 1,045–1,048 K)
anhydrous[5]
260 °C (500 °F; 533 K)
monohydrate, decomposes
175 °C (347 °F; 448 K)
dihydrate, decomposes
45.5 °C (113.9 °F; 318.6 K)
tetrahydrate, decomposes[5]
30 °C (86 °F; 303 K)
hexahydrate, decomposes[1]
Bylin pynt 1,935 °C (3,515 °F; 2,208 K) anhydrous[1]
Anhydrous:
74.5 g/100 mL (20 °C)[2]
Hexahydrate:
49.4 g/100 mL (−25 °C)
59.5 g/100 mL (0 °C)
65 g/100 mL (10 °C)
81.1 g/100 mL (25 °C)[1]
102.2 g/100 mL (30.2 °C)
α-Tetrahydrate:
90.8 g/100 mL (20 °C)
114.4 g/100 mL (40 °C)
Dihydrate:
134.5 g/100 mL (60 °C)
152.4 g/100 mL (100 °C)[3]
Solubility
Solubility in ethanol
  • 18.3 g/100 g (0 °C)
  • 25.8 g/100 g (20 °C)
  • 35.3 g/100 g (40 °C)
  • 56.2 g/100 g (70 °C)[4]
Solubility in methanol
  • 21.8 g/100 g (0 °C)
  • 29.2 g/100 g (20 °C)
  • 38.5 g/100 g (40 °C)[4]
Solubility in acetone 0.1 g/kg (20 °C)[4]
Solubility in pyridine 16.6 g/kg[4]
Acidity (pKa)
  • 8–9 (anhydrous)
  • 6.5–8.0 (hexahydrate)
Magnetic susceptibility −5.47·10−5 cm3/mol[1]
Refractive index (nD) 1.52
Viscosity
  • 3.34 cP (787 °C)
  • 1.44 cP (967 °C)[4]
Structur
Space group
  • Pnnm, No. 58 (anhydrous)
  • P42/mnm, No. 136 (anhydrous, >217 °C)[6]
Pynt group
  • 2/m 2/m 2/m (anhydrous)
  • 4/m 2/m 2/m (anhydrous, >217 °C)[6]
a = 6.259 Å, b = 6.444 Å, c = 4.17 Å (anhydrous, 17 °C)[6]
α = 90°, β = 90°, γ = 90°
Octahedral (Ca2+, anhydrous)
Thermochemistry
Speceefic heat capacity, C
  • 72.89 J/mol·K (anhydrous)[1]
  • 106.23 J/mol·K (monohydrate)
  • 172.92 J/mol·K (dihydrate)
  • 251.17 J/mol·K (tetrahydrate)
  • 300.7 J/mol·K (hexahydrate)[5]
Staundart molar
entropy
So298
108.4 J/mol·K[1][5]
Std enthalpy o
formation
ΔfHo298
  • −795.42 kJ/mol (anhydrous)[1]
  • −1110.98 kJ/mol (monohydrate)
  • −1403.98 kJ/mol (dihydrate)
  • −2009.99 kJ/mol (tetrahydrate)
  • −2608.01 kJ/mol (hexahydrate)[5]
−748.81 kJ/mol[1][5]
Pharmacology
A12AA07 (WHO) B05XA07 (WHO), G04BA03 (WHO)
Hazards
Main hazards Irritant
GHS pictograms The exclamation-mark pictogram in the Globally Harmonized Seestem o Classification an Labellin of Chemicals (GHS)[7]
GHS signal wird Warning
GHS hazard statements H319[7]
GHS precautionary statements P305+351+338[7]
NFPA 704
Lethal dose or concentration (LD, LC):
1,000-1,400 mg/kg (rattons, oral)[8]
Relatit compoonds
Ither anions
Ither cations
Except whaur itherwise notit, data are gien for materials in thair staundart state (at 25 °C [77 °F], 100 kPa).
YesY verify (whit is YesYN ?)
Infobox references

ReferencesEedit

  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 Lide, David R., ed. (2009). CRC Handbook of Chemistry and Physics (90th ed.). Boca Raton, Florida: CRC Press. ISBN 978-1-4200-9084-0.
  2. "Calcium chloride (anhydrous)". ICSC. International Programme on Chemical Safety and the European Commission.
  3. Seidell, Atherton; Linke, William F. (1919). Solubilities of Inorganic and Organic Compounds (2nd ed.). New York: D. Van Nostrand Company. p. 196.
  4. 4.0 4.1 4.2 4.3 4.4 4.5 Anatolievich, Kiper Ruslan. "Properties of substance: calcium chloride". chemister.ru. Retrieved 2014-07-07.
  5. 5.0 5.1 5.2 5.3 5.4 5.5 Pradyot, Patnaik (2019). Handbook of Inorganic Chemicals. The McGraw-Hill Companies, Inc. p. 162. ISBN 978-0-07-049439-8.
  6. 6.0 6.1 6.2 6.3 Müller, Ulrich (2006). Inorganic Structural Chemistry. wiley.com (2nd ed.). England: John Wiley & Sons Ltd. p. 33. ISBN 978-0-470-01864-4.
  7. 7.0 7.1 7.2 Sigma-Aldrich Co., Calcium chloride. Retrieved on 2014-07-07.
  8. Donald E. Garrett (2004). Handbook of Lithium and Natural Calcium Chloride. p. 379. ISBN 978-0080472904. Retrieved 2018-08-29. Its toxicity upon ingestion, is indicated by the test on rats: oral LD50 (rat) is 1.0–1.4 g/kg (the lethal dose for half of the test animals, in this case rats...)
  9. "MSDS of Calcium chloride". fishersci.ca. Fisher Scientific. Retrieved 2014-07-07.