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, commonly known as bauxite, has the chemical formula Al₂O₃. It is a white, refractory powder that is insoluble in water, with key physical properties including a melting point of 2015℃, a boiling point of 2980℃, a relative density of 4.0, and a Mohs hardness of 8.8. It exists in multiple crystal forms, primarily the α and γ variants.
Alumina can be produced by heating and dehydrating aluminum hydroxide. The naturally occurring α-type alumina is called corundum, which has a hardness second only to diamond. Mixing small amounts of impurities can give corundum various colors, resulting in gemstones—such as rubies (containing trace Cr³⁺) and sapphires (containing Ti³⁺, Fe²⁺, and Fe³⁺).
Today, gemstones can also be synthesized through the artificial crystallization of molten alumina. Synthetic gemstones are comparable to natural ones in terms of properties and are widely used in industrial technology. Examples include their use as bearings for high-speed moving machine parts, watch crystals, abrasives, and refractory materials. Corundum crucibles, for instance, can withstand temperatures of up to 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 |
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, proteomics (Chemicalbook), ultra-dry solvents, reagents for specific purposes, physical properties, refractory materials, chemical raw materials, chemical reagents, organic chemical products, other chemical reagents (biochemical reagents), organic chemical raw materials, chemical industry, conventional alumina oxide powders, raw materials, alumina oxides, aluminum salt metal compounds, separation reagents (biochemical reagents)
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