TECHNICAL INFORMATION |
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Crystal Form | Alpha Alumina |
Chemical Nature | Amphoteric |
Specific Gravity | 3.95 g/cm3 |
Loose Pack Bulk Density | 1.61 – 1.87 g/cm3 |
Hardness | Knoop – 2000; Mohs – 9 |
Melting Point | 2000C (3.630F) |
Reaction with Acids | Subject to mild attack by aqua regia and hot hydrochloric; less attack than brown aluminum oxide |
Reaction with Alkalis | Very slight with hot strong solutions |
TYPICAL CHEMICAL ANALYSIS