Aluminium oxide

Aluminium(III) oxide
(Aluminium oxide)
Names
	IUPAC name Aluminium oxide
	Systematic IUPAC name Aluminium(III) oxide
	Other names Dialuminium trioxide
Identifiers
CAS Number	1344-28-1 ;
3D model (JSmol)	Interactive image; Interactive image;
ChEMBL	ChEMBL3707210;
ChemSpider	8164808 ;
DrugBank	DB11342;
ECHA InfoCard	100.014.265
EC Number	215-691-6;
PubChem CID	9989226;
RTECS number	BD120000;
UNII	LMI26O6933 ;
CompTox Dashboard (EPA)	DTXSID1052791;
	InChI InChI=1S/2Al.3O/q2+3;3-2 Key: PNEYBMLMFCGWSK-UHFFFAOYSA-N ; InChI=1/2Al.3O/q2+3;3-2 Key: PNEYBMLMFCGWSK-UHFFFAOYAC;
	SMILES [Al+3].[Al+3].[O-2].[O-2].[O-2]; [O-2].[O-2].[O-2].[Al+3].[Al+3];
Properties
Chemical formula	Al2O3
Molar mass	101.960 g·mol−1
Appearance	white solid
Odor	odorless
Density	3.987 g/cm3
Melting point	2,072 °C (3,762 °F; 2,345 K)
Boiling point	2,977 °C (5,391 °F; 3,250 K)
Solubility in water	insoluble
Solubility	insoluble in all solvents
log P	0.31860
Magnetic susceptibility (χ)	−37.0×10−6 cm3/mol
Thermal conductivity	30 W·m−1·K−1
Refractive index (nD)	nω = 1.768–1.772 ; nε = 1.760–1.763 ; Birefringence 0.008
Structure
Crystal structure	Trigonal, hR30
Space group	R3c (No. 167)
Lattice constant	a = 478.5 pm, c = 1299.1 pm
Coordination geometry	octahedral
Thermochemistry
Std molar; entropy (S⦵298)	50.92 J·mol−1·K−1
Std enthalpy of; formation (ΔfH⦵298)	−1675.7 kJ/mol
Pharmacology
ATC code	D10AX04 (WHO)
Hazards
	GHS labelling:
Pictograms
NFPA 704 (fire diamond)	0 0 0
Flash point	Non-flammable
	NIOSH (US health exposure limits):
PEL (Permissible)	OSHA 15 mg/m3 (total dust); OSHA 5 mg/m3 (respirable fraction); ACGIH/TLV 10 mg/m3
REL (Recommended)	none
IDLH (Immediate danger)	N.D.
Related compounds
Other anions	aluminium hydroxide; aluminium sulfide; aluminium selenide
Other cations	boron trioxide; gallium(III) oxide; indium oxide; thallium(III) oxide
Supplementary data page
	Aluminium oxide (data page)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Aluminium oxide (or aluminium(III) oxide) is a chemical compound of aluminium and oxygen with the chemical formula Al₂O₃. It is the most commonly occurring of several aluminium oxides, and specifically identified as aluminium oxide. It is commonly called alumina and may also be called aloxide, aloxite, or alundum in various forms and applications. It occurs naturally in its crystalline polymorphic phase α-Al₂O₃ as the mineral corundum, varieties of which form the precious gemstones ruby and sapphire. Al₂O₃ is significant in its use to produce aluminium metal, as an abrasive owing to its hardness, and as a refractory material owing to its high melting point.^[7]

^ "Aluminum oxide_msds".
^ Cite error: The named reference properties was invoked but never defined (see the help page).
^ Patnaik, P. (2002). Handbook of Inorganic Chemicals. McGraw-Hill. ISBN 978-0-07-049439-8.
^ Raymond C. Rowe; Paul J. Sheskey; Marian E. Quinn (2009). "Adipic acid". Handbook of Pharmaceutical Excipients. Pharmaceutical Press. pp. 11–12. ISBN 978-0-85369-792-3.
^ ^a ^b Zumdahl, Steven S. (2009). Chemical Principles 6th Ed. Houghton Mifflin Company. ISBN 978-0-618-94690-7.
^ ^a ^b NIOSH Pocket Guide to Chemical Hazards. "#0021". National Institute for Occupational Safety and Health (NIOSH).
^ "Alumina (Aluminium Oxide) – The Different Types of Commercially Available Grades". The A to Z of Materials. 3 May 2002. Archived from the original on 10 October 2007. Retrieved 27 October 2007.

[chemsrc-1] "Aluminum oxide_msds".

[properties-2] Cite error: The named reference properties was invoked but never defined (see the help page).

[3] Patnaik, P. (2002). Handbook of Inorganic Chemicals. McGraw-Hill. ISBN 978-0-07-049439-8.

[4] Raymond C. Rowe; Paul J. Sheskey; Marian E. Quinn (2009). "Adipic acid". Handbook of Pharmaceutical Excipients. Pharmaceutical Press. pp. 11–12. ISBN 978-0-85369-792-3.

[b1-5] Zumdahl, Steven S. (2009). Chemical Principles 6th Ed. Houghton Mifflin Company. ISBN 978-0-618-94690-7.

[NIOSH-6] NIOSH Pocket Guide to Chemical Hazards. "#0021". National Institute for Occupational Safety and Health (NIOSH).

[azom-7] "Alumina (Aluminium Oxide) – The Different Types of Commercially Available Grades". The A to Z of Materials. 3 May 2002. Archived from the original on 10 October 2007. Retrieved 27 October 2007.

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