Cellulosic

The major cellulosic derivatives of interest in piping and other industrial applications are the acetate, butyrate, and propionate thermoplastics. These do not constitute any major use but are encountered daily in a number of smaller items such as nameplates, electrical component cases, high impact lenses, and other applications requiring a transparent plastic with good impact resistance.

Weathering properties of the materials are good, particularly that of propionate, but overall chemical resistance is not comparable to other thermoplastic. Water and salt solutions are readily handled, but any appreciable quantity of acid, alkali, or solvent can have an adverse effect on the plastic. The upper temperature of usefulness is 60 °C (140 F).