Physico-chemical properties of sulfur : II. Effects of different types of reagent on viscosities of liquid sulfur

Abstract

The changes of the viscosity of liquid sulfur were measured, in the temperature range 120 to 210℃, by adding to sulfur different types of reagents, which react with sulfur in different degrees. From the results of measurements the reagents could be classified into three groups according to different viscosities of sulfur. The viscosities of liquid sulfur resulting from adding any reagent of the first group were stable against heat. At first, up to a certain point, the temperature of liquid sulfur of the lowest viscosity decreases as the quantity of added reagent increases, but then it increases with further addition of the reagent. The viscosities of liquid sulfur resulting from adding any reagent of the second group were also stable against heat, but as the quantity of the reagent increased the temperature of liquid sulfur of the lowest viscosity rose steadily. The viscosities of liquid sulfur resulting from adding any of the third group reagent were unstable against heat and changed considerably with time. The author will gives an inclusive interpretation of these phenomena.