Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Viscosity and Thermodynamic Properties of Liquid Sulfur

  • Chang, Man-Chai (Department of Chemistry Korea Advanced Institute of Science and Technology) ;
  • Jhon, Mu-Shik (Department of Chemistry Korea Advanced Institute of Science and Technology)
  • Published : 1982.12.30
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Abstract

It has been presumed that the molten sulfur above $159^{\circ}C$ consists of an equilibrium mixture of $S_8$ rings and $S_x$ polymers where the number average degree of polymerization, P, is large. But it is known that admixture of halogens with liquid sulfur greatly reduce the viscosity. Constructing a new equilibrium equation, it is possible to evaluate the viscosity when halogens are added to liquid sulfur. Calculated viscosity is in good agreement with experimental values. Using the proposed model, the thermodynamic properties of liquid sulfur are also calculated over a wide range of temperature which the sulfur exists as the polymer.

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