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see aluminaalumina
or aluminum oxide,
Al2O3, chemical compound with m.p. about 2,000°C; and sp. gr. about 4.0. It is insoluble in water and organic liquids and very slightly soluble in strong acids and alkalies. Alumina occurs in two crystalline forms.
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References in periodicals archive ?
05 for oil-water systems in sandstone, alundum, and aluminum silicate cores [15].
0 Alundum, sandstone/ [6] Oil-brine Hamon & Vidal 444.