cellulose acetate
An acetate salt of cellulose, produced fromCOTTON LINTERS and
used in archival work: 1) as a photographic film
base (often called "safety film" since it is not
readily combustible); and 2) in conjunction with
an adhesive, such as one of the polyvinyl resins,
in laminating, heat sealing, etc. Cellulose
acetate is manufactured in a wide variety of
thicknesses, ranging from 0.001 to 0.005 inch, and
is clear, hard and glossy. It has little tear
strength and has almost the same HYGROSCOPICITY as
cellulose itself; however, when moist, it does not
stretch as much as paper. (31 , 34 , 81 , 303 )
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