Aluminum Chloride

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Aluminum Chloride (Wikipedia)
Aluminium chloride
Aluminium chloride
Aluminium trichloride dimer
Names
IUPAC name
aluminium chloride
Other names
aluminium(III) chloride
aluminum trichloride
Identifiers
3D model (Jmol)
ChEBI
ChemSpider
ECHA InfoCard 100.028.371
1876
RTECS number BD0530000
UNII
Properties
AlCl3
Molar mass 133.341 g/mol (anhydrous)
241.432 g/mol (hexahydrate)
Appearance white or pale yellow solid,
hygroscopic
Density 2.48 g/cm3 (anhydrous)
2.398 g/cm3 (hexahydrate)
Melting point 192.6 °C (378.7 °F; 465.8 K)
(anhydrous)
100 °C (212 °F; 373 K)
(hexahydrate, dec.)
Boiling point 180 °C (356 °F; 453 K) (sublimates)
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)
Viscosity 0.35 cP (197 °C)
0.26 cP (237 °C)
Structure
Monoclinic, mS16
C12/m1, No. 12
a = 0.591 nm, b = 0.591 nm, c = 1.752 nm
0.52996 nm3
6
Octahedral (solid)
Tetrahedral (liquid)
Trigonal planar
(monomeric vapour)
Thermochemistry
91 J/mol·K
111 J/mol·K
−704.2 kJ/mol
-628.6 kJ/mol
Pharmacology
D10AX01 (WHO)
Hazards
Safety data sheet See: data page
GHS pictograms The corrosion pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS)
GHS signal word Danger
H314
P280, P310, P305+351+338
Corrosive C
R-phrases R34
S-phrases (S1/2), S7/8, S28, S45
NFPA 704
Flammability code 0: Will not burn. E.g., waterHealth code 3: Short exposure could cause serious temporary or residual injury. E.g., chlorine gasReactivity code 2: Undergoes violent chemical change at elevated temperatures and pressures, reacts violently with water, or may form explosive mixtures with water. E.g., phosphorusSpecial hazards (white): no codeNFPA 704 four-colored diamond
Lethal dose or concentration (LD, LC):
anhydrous:
380 mg/kg, rat (oral)
hexahydrate:
3311 mg/kg, rat (oral)
US health exposure limits (NIOSH):
PEL (Permissible)
none
REL (Recommended)
2 mg/m3
IDLH (Immediate danger)
N.D.
Related compounds
Other anions
Aluminium fluoride
Aluminium bromide
Aluminium iodide
Other cations
Boron trichloride
Gallium trichloride
Indium(III) chloride
Magnesium chloride
Related Lewis acids
Iron(III) chloride
Boron trifluoride
Supplementary data page
Refractive index (n),
Dielectric constantr), etc.
Thermodynamic
data
Phase behaviour
solid–liquid–gas
UV, IR, NMR, MS
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is YesYN ?)
Infobox references

Aluminium chloride (AlCl3) is the main compound of aluminium and chlorine. It is white, but samples are often contaminated with iron(III) chloride, giving it a yellow colour. The solid has a low melting and boiling point. It is mainly produced and consumed in the production of aluminium metal, but large amounts are also used in other areas of chemical industry. The compound is often cited as a Lewis acid. It is an example of an inorganic compound that "cracks" at mild temperature, reversibly changing from a polymer to a monomer.