Aluminum oxide

• CAS: 1344-28-1
• Catalog Number: ACM1344281-4
• Category: Organic & Printed Electronics
• Molecular Weight: 102
• Molecular Formula: Al2O3
• Description: Crystallographic D spacing ((0001) - c plane: 2.165 Angstrom)
• Synonyms: Aluminium oxide;Aluminium oxide,neutral;3h-phenoxazine,actinomycindderiv.;Aluminium oxide,acidic,Brockmann I;actinomycin-V
• IUPAC Name: dialuminum;oxygen(2-)
• 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
• 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
• Chemical Formula: Al2O3
• Color/Form: White
• Complexity: 0
• Covalently-Bonded Unit Count: 5
• EC Number: 215-691-6
• Exact Mass: 101.947821g/mol
• Form: single crystal substrate
• Formal Charge: 0
• Hazard Codes: Xi
• Hazard Statements: H314 H351
• H-Bond Acceptor: 3
• H-Bond Donor: 0
• Heavy Atom Count: 5
• HS Code: 2818200000
• ICSC Number: 0351
• LogP: 0.31860
• MDL Number: MFCD00003424
• 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
• pH: 6-8
• Precautionary Statements: P280 P305+P351+P338 P310
• Quality Level: 100
• Refractive Index: 1.765
• RIDADR: UN 1950
• Rotatable Bond Count: 0
• RTECS Number: BD1200000
• Safety Description: 26-24/25-16-7-36
• Signal Word: Danger
• Solvent: 80% of 1, 2-Propanediol
• Stability: Stable under normal shipping and handling conditions.
• Storage Conditions: Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
• Supplemental Hazard Statements: H222-H229-H225-H319-H336-H333-H314-H318-H226-H304
• Symbol: GHS02,GHS07,GHS08,GHS05
• UNII: LMI26O6933
• Vapor Pressure: 0 mm Hg (approx) (NIOSH, 2016);1 mm Hg at 2158 °C;0 mmHg (approx);0 mmHg (approx)