The application axis of Dichromate segmentation divides the market into four principal end‑use groups: leather tanning, metal finishing, textile dyeing, and wood preservation. Leather tanning, accounting for roughly 35 % of total revenue, drives demand for sodium and potassium dichromate as oxidizing agents that stabilize collagen fibers. Metal finishing contributes about 30 % and relies on dichromate salts for passivation, anodizing, and anti‑corrosion treatments in automotive and aerospace components. Textile dyeing, representing 20 % of the market, utilizes dichromate to fix azo dyes and improve color fastness on cotton and synthetic blends. Wood preservation, the smallest segment at 15 %, employs dichromate formulations to inhibit fungal decay and insect attack in outdoor construction. These application categories collectively shape the overall market size, with each segment’s share reflecting its specific production volumes, regulatory exposure, and substitution risk.