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Aluminium chloride




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Aluminium chloride
Aluminium-trichloride-hexahydrate-white-and-yellow.jpg
Aluminium-trichloride-dimer-3D-balls.png
IUPAC name aluminium chloride
Other names aluminium(III) chloride
aluminum trichloride
Identifiers
CAS number 7446-70-0
PubChem 24012
ChEBI CHEBI:30114
RTECS number BD0530000
SMILES Cl[Al](Cl)Cl
Gmelin Reference 1876
Properties
Molecular formula AlCl3
Molar mass 133.341 g/mol (anhydrous)
241.432 g/mol (hexahydrate)[1]
Appearance white or pale yellow solid,
hygroscopic
Density 2.48 g/cm3 (anhydrous)
2.398 g/cm3 (hexahydrate)[1]
Melting point

192.6 °C, 466 K, 379 °F

Boiling point

180 °C, 453 K, 356 °F

Solubility in water 439 g/l (0 °C)
449 g/l (10 °C)
458 g/l (20 °C)
466 g/l (30 °C)
473 g/l (40 °C)
481 g/l (60 °C)
486 g/l (80 °C)
490 g/l (100 °C)
Solubility soluble in hydrogen chloride, ethanol, chloroform, carbon tetrachloride
slightly soluble in benzene
Vapor pressure 133.3 Pa (99 °C)
13.3 kPa (151 °C)[2]
Viscosity 0.35 cP (197 °C)
0.26 cP (237 °C)[2]
Structure
Crystal structure Monoclinic, mS16
Space group C12/m1, No. 12[3]
Lattice constant a = 0.591 nm, b = 0.591 nm, c = 1.752 nm[3]
Coordination
geometry
Octahedral (solid)
Tetrahedral (liquid)
Molecular shape Trigonal planar
(monomeric vapour)
Thermochemistry
Std enthalpy of
formation
ΔfHo298
−704.2 kJ/mol[4]
Standard molar
entropy
So298
109.3 J/mol·K[4]
Specific heat capacity, C 91.1 J/mol·K[4]
Pharmacology
ATC code
Hazards
NFPA 704

NFPA 704.svg

0
3
2
 
U.S. Permissible
exposure limit (PEL)
none
Related compounds
Other anions Aluminium fluoride
Aluminium bromide
Aluminium iodide
Other cations Boron trichloride
Gallium trichloride
Indium(III) chloride
Magnesium chloride
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

Aluminium chloride (AlCl3), is a chemical compound. It is a white or yellow crystalline solid. It melts at a low temperature. It is made by reacting aluminium oxide with hydrochloric acid. The anhydrous (without water) form may be made by reacting aluminium and chlorine. It is used in the making of chemicals. It is also used in deodorants. It can cause slight irritation.

Related pages

Sources

  1. 1.0 1.1 Cite error: Invalid <ref> tag; no text was provided for refs named crc.
  2. 2.0 2.1 Aluminum chloride Archived 2014-05-05 at the Wayback Machine. Chemister.ru (2007-03-19). Retrieved on 2017-03-17.
  3. 3.0 3.1 Ketelaar, J.Α.A. (1935). "Die Kristallstruktur der Aluminiumhalogenide II". Zeitschrift für Kristallographie – Crystalline Materials 90. doi:10.1524/zkri.1935.90.1.237 . 
  4. 4.0 4.1 4.2 Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (92nd ed.). Boca Raton, FL: CRC Press. p. 5.5. ISBN 1439855110 . 




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