Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

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aluminum sulfate

A salt of aluminum (Al 2 (SO 4 ) 3 ), occurring naturally in considerable quantities in alumstone (alumite) and feather alum. It is manufactured by treating bauxite with 80% sulfuric acid at 110° C., the resulting solution being purified, concentrated, and allowed to solidify. See also: ALUM .

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