calcium hypochlorite
Any hypochlorite of calcium, e.g., the normal
anhydrous salt (Ca(ClO)2), that is generally found
in commercial products containing 70 to 75%
available chlorine. Calcium hypochlorite is used
by many paper conservationists to bleach archival
papers, and it is also used as an oxidizing agent
to reduce the effects of FOXING . Its use is
potentially harmful, as the chlorine is difficult
to remove. Also known as "bleaching powder."
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