Slow fires is a term from library and information science used to describe the self-destruction of acid paper.

One can now buy low acid editions of many books for use in libraries. A process currently in vogue is mass scanning of the books, as done in the Million Book Project. In the future, another possibility may be to put books through a process that removes the acidity and gives them a much longer life. No such process yet exists.

See also: mass deacidification | Library and information science