The Application segment dominates the Thenardite market, accounting for roughly 100 % of total demand. Glass manufacturing represents the largest share (≈35 %), where anhydrous sodium sulfate functions as a flux and fining agent, directly influencing melt viscosity and product clarity. Ceramics & refractories follow with an estimated 30 % share, leveraging thenardite’s high thermal stability to improve sintering efficiency and dimensional accuracy of advanced ceramic bodies. The Chemical production category, contributing about 20 %, uses thenardite as a precursor for sodium sulfite, sodium bisulfate, and other intermediates, thereby linking raw material procurement to downstream specialty chemicals. Detergent formulation accounts for roughly 10 %, where thenardite provides alkalinity and water softening properties that enhance surfactant performance. The residual 5 % falls under Other applications, including oil‑field drilling fluids and textile processing, where niche requirements drive modest but measurable consumption. This distribution illustrates the core drivers behind the overall market size and underscores the relevance of precise Thenardite segmentation for strategic planning.