36 C.F.R. § 1232.24 Unstable cellulose-acetate film.
Title 36 - Parks, Forests, and Public Property
Cellulose-acetate film, also known as safety film, is nonflammable and does not represent the same degree of hazard as nitrate film materials. Nonetheless, cellulose-acetate film also deteriorates over time. Temperature, humidity, harmful storage enclosures, and gaseous products influence the rate of deterioration. Agencies shall inspect cellulose-acetate film periodically for an acetic odor, wrinkling, or the presence of crystalline deposits on the edge or surface of the film that indicate deterioration. Agencies shall notify NARA within 30 days after inspection about deteriorating permanent or unscheduled audiovisual records composed of cellulose acetate so that they can be copied.
Title 36: Parks, Forests, and Public Property
PART 1232—AUDIOVISUAL RECORDS MANAGEMENT
Subpart B—Audiovisual Records Management
§ 1232.24 Unstable cellulose-acetate film.
