Saponification of Methylated Mucosubstances at Low Temperatures

Abstract
A fresh 1% solution of KOH in 70% ethanol in 2 hr at 2-4 C restores basophilia to methylated acid mucosubstances satisfactorily without detaching or damaging tissue sections. A 0.5% solution of Ba(OH)2 under the same conditions gives results nearly as good, but NaOH and KMnO4 are unsatisfactory.