The application segment of the Sodium Sulfide market is divided into five principal end‑uses: pulp & paper, textile processing, water‑treatment, chemical manufacturing, and mining. In pulp & paper, sodium sulfide functions as a kraft cooking agent, accounting for roughly 35 % of total market revenue due to the sector’s scale and the chemical’s efficiency in lignin removal. The textile industry, which employs sodium sulfide for fiber degumming and dye‑fixation, contributes about 25 % of market size, reflecting strong demand from emerging apparel producers. Water‑treatment applications—primarily for heavy‑metal precipitation—represent 20 % of the market, driven by tightening environmental regulations. Chemical manufacturing, encompassing the synthesis of dyes, pigments, and other sulfide‑based intermediates, holds a 15 % share. Finally, mining operations use sodium sulfide for ore flotation, a niche that adds the remaining 5 %. Collectively, these categories form the core of Sodium Sulfide segmentation and illustrate how each application leverages distinct process advantages to shape overall market volume.