The solubility of cellulose depends on many factors,1-5especially its structure, molecular weight,and origin.At present, many scientific centers are interested in dissolving cellulose in inorganic and in organic solvents. This results from the necessity of replacing, in the nearest future, the viscose process of manufacturing fibers and films by a new method, completely nontoxic for the natural environment and based on inexpensive direct solvents, which do not require the preparation of cellulose derivatives.