Acid migration

From: Iona McCraith <*mccraii<-a*> Date: Wednesday, September 3, 1997 · mccraii<-a

Kathie Bordelon <kbordelo<-a t->mcneese< . >edu> writes

>If acid-free envelopes contain acidic newsprint for several years,
>can I assume that the acid migrates to the envelope? And, can I also
>assume that if the newsprint is removed the envelope will remain
>acidic unless treated?

I would say yes to both questions.  Acidity will migrate from an
acidic item (newsprint) to its enclosure, especially if the
enclosure is lower pH level.  And yes the envelope will remain
acidic even if the newsprint is removed.

                                  ***
                  Conservation DistList Instance 11:22
                 Distributed: Friday, September 5, 1997
                       Message Id: cdl-11-22-010
                                  ***