Protective Effect of Salt on Reduction of Viscosity of Sodium Thymonucleate Solutions by Heat

Abstract

The viscosity of aqueous soln. of Na thymonucleate is reduced both by heating and by addition of NaCl and other salts. If, however, the nucleate soln. is heated in the presence of a sufficiently high concn. of salt (more than 0.5 [image]), there is no further decrease in viscosity beyond that induced by the salt. The protective effect of the salt is reversible, for if the salt is removed by dialysis from the heated nucleate-salt mixture, the residual aqueous soln. of nucleate again suffers a marked reduction in viscosity on heating.