Understanding sulfur solubility and volatilization is crucial across various fields, including materials science, environmental studies, and industrial applications. In silicate and oxide-based glass and melt systems, sulfur influences key processes such as degassing, refining, and waste immobilization. Its solubility is governed by redox conditions, temperature, and pressure, leading to complex behaviors that remain challenging to characterize, particularly in multicomponent melts where network modifiers further complicate sulfur incorporation. Therefore, a comprehensive understanding of its compositional dependence is essential for refining predictive models of sulfur behavior.

This study investigates sulfur solubility in a multicomponent synthetic glass composition by incorporating sulfate up to its solubility limits. The glass composition is systematically adjusted towards a ternary system to evaluate the impact of chemical modifications on sulfur incorporation. By correlating composition, structure, and solubility, this work provides new insights into sulfur behavior in silicate melts. Identifying structural changes associated with sulfur incorporation will clarify the roles of network-forming and network-modifying species in controlling sulfur solubility