Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

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sodium hydrosulfide

A salt (NaSH), the anhydrous form of which is generally prepared by saturating a solution of sodium in alcohol with dry hydrogen sulfide. It is used as a sharpening agent in lime liquors and is equally as effective as, but less caustic in its action than, SODIUM SULFIDE . (363 )




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