Calcium chloride

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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

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

References[eedit | eedit soorce]

  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.