Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

 Previous item  Up One Level Next item

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."

[Search all CoOL documents]