Abstract
The features observed here are analogous to those ascertained by Cellulose nitrate, i.e., a gellike “ Bodenkörper” is formed and the influence of the amount of “ Bodenkörper” is large so far as the hysteresis being quite small or does not occur, while, on the other hand, the insoluble parts maintain a non-sticky swollen structure and the influence of the amount of “ Bodenkörper” is slight when the hysteresis occurs.
But in the case of acetate the following facts are somewhat characteristic.
(1) In all cases the solubility increases with rise in temperature, though it may differ in degree according to the solute or the composition of solvents.
(2) Although some hysteresis is observed in a mixture containing hydrous alcohol as diluent, secondary acetate shows, in general, almost no hysteresis, while triacetate has always shown a remarkable hysteresis.
(3) Deviating from the general rules, being solved secondary acetate in benzene-acetone without hysteresis and forms a gellike “ Bodenkörper”, its solubility scarcely lessens with the increase of the amount of sample used.
