CAS 1344-28-1 Aluminum oxide - Materials / Alfa Chemistry

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Substrates and Electrode Materials

Aluminum oxide

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Catalog Number

ACM1344281-4

Product Name

Aluminum oxide

Structure

CAS

1344-28-1

Category

Substrates and Electrode Materials

Synonyms

Aluminium oxide;Aluminium oxide,neutral;3h-phenoxazine,actinomycindderiv.;Aluminium oxide,acidic,Brockmann I;actinomycin-V

Description

Crystallographic D spacing ((0001) - c plane: 2.165 Angstrom)

IUPAC Name

dialuminum;oxygen(2-)

Molecular Weight

102

Molecular Formula

Al2O3

Canonical SMILES

O=[Al]O[Al]=O

InChI

1S/2Al.3O

InChI Key

TWNQGVIAIRXVLR-UHFFFAOYSA-N

Boiling Point

2,977 °C

Melting Point

2050ºC

Flash Point

2980°C

Purity

99% | 99.9% | 99.99% | 99.999%

Density

1.06 g/mL at 25ºC

Solubility

Insoluble (NIOSH, 2016);Difficult solubility in mineral acids and strong alkali;Insoluble in water;Solubility in water: none;Insoluble

Appearance

White odorless crystalline powder

Storage

room temp

Color/Form

White

Complexity

Covalently-Bonded Unit Count

EC Number

215-691-6

Exact Mass

101.947821g/mol

Form

single crystal substrate

Formal Charge

Hazard Class

2.1

Hazard Statements

H314 H351

Heavy Atom Count

ICSC Number

0351

Log P

0.31860

MDL Number

MFCD00003424

MeSH Entry Terms

Alumina;Alumina Ceramic;Aluminum Oxide;Aluminum Oxide (Al130O40);Aluminum Oxide (Al2O);Aluminum Oxide (AlO2);Bauxite;Ceramic, Alumina;Corundum;Oxide, Aluminum;Sapphire

Monoisotopic Mass

101.947821g/mol

Odor

Odorless

Other Experimental

Very hygroscopic; an electrical insulator, electrical resistivity at 300 °C about 1.2x10+13 ohms-cm; very hard, about 8.8 on Mohs' scale; when heated above 800 °C, becomes insoluble in acid; specific gravity increases from 2.8 to 4.0 when heated above 800 °C;White powder, hexagonal; MP: 2054 °C; BP: 2977 °C; density: 3.99 g/cu cm; insoluble in water, organic solvents; slightly soluble in alkaline solutions /Alpha-alumina/;Soft white powder; transforms to corundum at 1200 °C; density: 3.97 g/cu cm; insoluble in water; soluble in acid; slightly soluble in alkaline solutions /Gamma-alumina/;Heat of formation: -130.0 kJ/mol; Gibbs energy of formation: -159.0 kJ/mol; molar entropy: 259.4 J/mol-K; molar heat capacity at constant pressure: 45.7 J/mol-K at 298.15 K;Vapor pressures: 100 Pa at 2122 °C; 1 kPa at 2351 °C; 10 kPa at 2629 °C; 100 kPa at 2975 °C;Enthalpy of fusion: 111.1 kJ/mol /Alpha-alumina/;Index of refraction: 1.7598 /alpha-alumina/; 1.7598 /gamma-alumina/;Density: 3.97 g/cu cm; Mohs' hardness: 9; index of refraction: 1.761 (alpha), 1.769 (beta) /Corundum/;Ridgeway's hardness scale: 12; Knoop hardness: 21 kN/sq m;Mean specific heat: 795.5 J/kg-K from 25-1,800 °C; thermal conductivity: 10.9 W/m-K at 500 °C, 6.2 W/m-K at 1000 °C; linear thermal expansion coefficient: 8.6/deg C X 10+6, from 20-1000 °C

Packaging

1, 5 ea in rigid mailer

6-8

Precautionary Statements

P280 P305+P351+P338 P310

Refractive Index

1.765

Rotatable Bond Count

RTECS Number

BD1200000

Safety Description

26-24/25-16-7-36