It is suggested that the depolymerization of oxidized cellulose (e.g. paper
) caused by alkalinity can be exploited to evaluate its degree of oxidation
. A rough estimate can be obtained with just one sample measured before and
alter heating in the alkaline solvent for viscosity itself; a more accurat
e evaluation requires reduction of the sample prior to the viscometric meas
urement. This procedure should not be identified with determinations of tot
al carbonyl and carboxyl contents.