1.1 This classification system covers requirements for plas-ticized cellulose acetate butyrate thermoplastic compounds suitable for injection molding and extrusion. These compounds have a butyryl content less than 38 % and an acetyl content less than 15 % and can contain dyes and pigments. This classifica-tion system does not include special materials compounded for special applications. Cellulosic plastic materials, being thermoplastic, are reprocessable and recyclable. This classifi-cation system allows for the use of those cellulosic materials,provided that all specific requirements of this classification system are met.
