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Aluminum oxide CAS#1344-28-1
CAS Number: 1344-28-1
Chemical Formula: Al2O3
Synonyms:
Aluminum Oxide,
Neutral
Brockmann Activity Grade I
Appearance: White power
HS Code: 2818200000
MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)
Products Description of Aluminum oxide CAS#1344-28-1
Alumina is commonly known as bauxite, with the chemical formula Al2O3, a white powder that is refractory and insoluble in water. The melting point is 2015℃, the boiling point is 2980℃, the relative density is 4.0, and the Mohs hardness is 8.8. It has different crystal forms, mainly α and γ variants. Alumina can be obtained by heating and dehydrating aluminum hydroxide. The α-type aluminum oxide that exists in nature is called corundum, which is second only to diamond in hardness. A small amount of impurities mixed in can make corundum with various colors, called gems, such as ruby (containing a small amount of Cr3+) and sapphire (containing Ti3+ and Fe2+, Fe3+). Now gems can be made by artificial crystallization of molten aluminum oxide. Artificial gems are no less than natural gems in terms of their properties and are widely used in industrial technology. For example, they are used as bearings for fast-moving parts of machines, diamonds on clocks and watches, as well as abrasives and refractory materials. Another example is corundum crucibles, which can withstand high temperatures of 1800℃.
Parameters
| Melting point | 2040 °C(lit.) |
| Boiling point | 2980°C |
| density | 3.97 |
| bulk density | 950-1100g/L |
| vapor pressure | 17 mm Hg ( 20 °C) |
| refractive index | 1.765 |
| Fp | 2980°C |
| storage temp. | Sealed in dry,Room Temperature |
| solubility | Miscible with ethanol. |
| form | powder |
| color | White to pink |
| Specific Gravity | 3.97 |
| Odor | Odorless |
| PH Range | 3.5 - 4.5 |
| PH | 7.0±0.5 ( in H2O) |
| Water Solubility | INSOLUBLE |
| semiconductor properties | <0001> |
| Crystal Structure | Trigonal |
| crystal system | Three sides |
| Merck | 14,356 |
| Space group | R3c |
| Lattice constant | a/nmb/nmc/nmα/oβ/oγ/oV/nm30.475890.475891.299190901200.2548 |
| Exposure limits | ACGIH: TWA 1 mg/m3 OSHA: TWA 15 mg/m3; TWA 5 mg/m3 |
| Dielectric constant | 4.5（Ambient） |
| InChIKey | PNEYBMLMFCGWSK-UHFFFAOYSA-N |
| CAS DataBase Reference | 1344-28-1(CAS DataBase Reference) |
| NIST Chemistry Reference | Aluminum oxide(1344-28-1) |
| EPA Substance Registry System | Alumina (1344-28-1) |
Safety Information
| Hazard Codes | Xi,F |
| Risk Statements | 36/37/38-67-36/38-11-36 |
| Safety Statements | 26-24/25-16-7-36 |
| WGK Germany | - |
| RTECS | BD1200000 |
| F | 3 |
| TSCA | Yes |
| HazardClass | 8 |
| HS Code | 28181010 |
| Hazardous Substances Data | 1344-28-1(Hazardous Substances Data) |
| Toxicity | Chronic inhalation of Al2O3 dusts may cause lung damage. |
Products Description of Aluminum oxide CAS#1344-28-1
Catalysis and inorganic chemistry; other reagents; powders; aluminum; oxides; coating materials; Ct oxides; inorganic chemical products; inorganic salts; Cw inorganic functional materials; catalysts; other petroleum processing catalysts; petroleum processing catalysts; light metals; inorganic compounds and salts; catalysts and additives; desiccants; general reagents; other biochemical reagents; Chemicalbook proteomics; ultra-dry solvents; reagents for specific purposes; physical properties; refractory materials; chemical raw materials; chemical reagents; chemical products - organic chemicals; biochemical reagents - other chemical reagents; organic chemical raw materials; chemical industry; conventional oxide powders - alumina; raw materials; oxides - alumina; metal compounds - aluminum salts; biochemical reagents - separation reagents
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