11028

Oxyde d′aluminium

puriss., ≥98% Al₂O₃ basis

• Synonyme(s) : Alumina
• Formule linéaire : Al₂O₃
• Numéro CAS: 1344-28-1
• Poids moléculaire : 101.96
• Numéro CE : 215-691-6
• Numéro MDL: MFCD00003424
• Code UNSPSC : 12352311
• eCl@ss : 38120402
• ID de substance PubChem : 329749286

Propriétés

• Qualité: puriss.
• Pureté: ≥98% Al₂O₃ basis
• Forme: solid
• Impuretés: ≤0.005% heavy metals (as Pb); ≤0.2% alkalis (as Na₂O)
• Perte: ≤0.5% loss on ignition, 1000 °C, 2 h
• Pf: 2040 °C (lit.)
• Traces d'anions: chloride (Cl^-): ≤50 mg/kg; silicate (as SiO₂): ≤1000 mg/kg; sulfate (SO₄^2-): ≤500 mg/kg
• Traces de cations: Fe: ≤300 mg/kg
• Chaîne SMILES: O=[Al]O[Al]=O
• InChI: 1S/2Al.3O
• Clé InChI: TWNQGVIAIRXVLR-UHFFFAOYSA-N

Description

Description générale

Aluminum oxide (Alumina, Al₂O₃) is commonly used as adsorbent. Formation of protective α-Al₂O₃ scales on the alloys at high temperatures has been studied. Polycrystalline Al₂O₃ has been employed to investigate the self-diffusion coefficient of aluminum in the temperature range of 1670°-1905°C. Aluminium oxide can either be obtained via thermal conversion of aluminium hydroxide at temperatures >1200^οC or via combustion of aluminium. Aluminium oxide nanoparticles can behave like safe adjuvants and carriers for eliciting antibodies from small molecules called haptens.

Application

Aluminum oxide (Alumina) may be employed for the selective adsorption of the catecholamines during their determination in diverse biological matrices. It may be used in the fabrication of polycrystalline lithium iodide ­- aluminum oxide solid electrolytes. The incorporation of aluminum oxide remarkably increased the conductivity of lithium iodide. Aluminum oxide (activity II-III, according to the Brockmann scale) has been used for the chromatographic purifications.

Informations sur la sécurité

• Code de la classe de stockage: 13 - Non Combustible Solids
• Classe de danger pour l'eau (WGK): nwg
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable