Aluminium iodide facts for kids

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Quick facts for kids Aluminium iodide
Preferred IUPAC name Aluminium iodide
Other names	Aluminium(III) iodide Aluminum iodide Aluminium triiodide Aluminum triiodide
Identifiers
CAS number	7784-23-8
PubChem	82222
EC number	232-054-8
SMILES	I[Al](I)I
Properties
Molecular formula	AlI3, AlI3·6H2O (hexahydrate)
Molar mass	407.695 g/mol (anhydrous) 515.786 g/mol (hexahydrate)
Appearance	white (anhydrous) or yellow powder (hexahydrate)
Density	3.98 g/cm3 (anhydrous) 2.63 g/cm3 (hexahydrate)
Melting point	188.28 °C, 461 K, 371 °F
Boiling point	382 °C, 655 K, 720 °F
Solubility in water	very soluble, partial hydrolysis
Solubility in alcohol, ether	soluble (hexahydrate)
Structure
Crystal structure	Monoclinic, mP16
Space group	P21/c, No. 14
Lattice constant	a = 1.1958 nm, b = 0.6128 nm, c = 1.8307 nm
Thermochemistry
Std enthalpy of formation ΔfHo298	-302.9 kJ/mol
Standard molar entropy So298	195.9 J/(mol·K)
Specific heat capacity, C	98.7 J/(mol·K)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

Aluminium iodide is any chemical compound made up of only aluminium and iodine. It is formed by the reaction of aluminium and iodine, or the action of hydrogen iodide on aluminium metal.