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alumina
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alumina

Oxide of aluminium, widely distributed in clays, slates, and shales. It is formed by the decomposition of the feldspars in granite and used as an abrasive. Typically it is a white powder, soluble in most strong acids or caustic alkalis but not in water. Impure alumina is called ‘emery’. Rubies, sapphires, and topaz are corundum gemstones. It is the chief component of bauxite.
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? Mentioned in ? References in periodicals archive
 
Series of white hydrated alumina fire retardants/smoke suppressants in a range of particle sizes.
Flame retardants by Plastics Technology
Veendam, The Netherlands, will market hydrated alumina and magnesium
J.M. Huber by Rubber World
Series of white hydrated alumina fire retardants/smoke suppressants in a range of particle sizes.
FLAME RETARDANTS by Plastics Technology
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