EN ISO 1599:1999

Plastics - Cellulose acetate - Determination of viscosity loss on moulding (ISO 1599:1990) EN ISO 1599:1999

Publication date:   Dec 1, 2001

General information

60.60 Standard published   May 19, 1999


CEN/TC 249 Plastics

European Norm

83.080.01   Plastics in general



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This method is suitable for cellulose acetate which does not contain additives, fillers, etc. which may interfere with the determination of viscosity. It is suitable for cellulose acetate having an acetic acid yield above 50 %. Cellulose acetate plasticized with dimethyl phthalate is moulded under specified conditions of temperature, pressure and time. After cooling, the moulding is ground up. The viscosity ratio of the ground material from the moulding and also that of the original cellulose acetate material are determined in accordance with ISO 1157. The percentage viscosity loss is calculated from the values of viscosity before and after moulding. This second edition cancels and replaces the first edition ISO 1599:1975.

Life cycle


EN ISO 1599:1999
60.60 Standard published
May 19, 1999


Adopted from ISO 1599:1990 IDENTICAL