Christian, check with Doug Nishimura at the Image Permanence Institute (Rochester Institute of Technology). IPI is the authority in this area, and Doug is both accessible and willing to help. Doug's email address is [log in to unmask] and his phone number is (585) 475-5199.
In the meantime, on the supposition that some of the film may be cellulose nitrate-based, I'd be REAL careful storing and handling it. in fact, my recollection is that a way to verify that the film is cellulose nitrate-based is to touch a match to it: if it burns with enthusiasm, it's cellulose nitrate-based. Of course, that assumes you don't care what happens to the film.
The NYC Department of Records has a large collection of cellulose nitrate-based photographic film from the 1930s and 1940s, which we store in industrial freezers. The images are a photographic inventory of New York City properties from that period, for assessing the real tax.
Good luck.
Fred
===================================================================
Frederic J. Grevin
Deputy Commissioner and Chief Information Officer
The City of New York,
Department of Records
Email: [log in to unmask]
Land phone: 212.788.8615
Cell phone: 347.436.5360
Fax: 212.788.8614
www.nyc.gov/records
31 Chambers Street
New York, NY 10007
USA
-----Original Message-----
From: Records Management Program [mailto:[log in to unmask]] On Behalf Of Christian Meinke
Sent: Friday, May 08, 2009 11:25
To: [log in to unmask]
Subject: [RM] Nitrate film for Micrographics?
We've come across a collection of 16mm microfilm reels dated from 1947 to
1962, that are in a bad state of decay - an extreme case of vinegar
syndrome. Because of the age (some prior to the 1952 discontinuance of
Nitrate film stock), there is concern that some may be nitrite cellulose
based and hence much more hazardous. Any of you folks with a broader
background in micrographics have an easy way to determine if any of the
film stock is nitrate - or even if Nitrate film was ever made for
micrographic purposes? - to me everything is consistent with acetate film,
but I've never dealt with Nitrate film so that may be ignorance on my part.
Thanks,
Christian
Christian Meinke, CRM
Southern California Edison
Information Governance
(626) 302-7133/PAX 27133
Mobile (818) 414-9515
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