Electronic Grade Hydrogen Sulphide (H2S) segmentation by type distinguishes high‑purity and ultra‑high‑purity grades, each defined by maximum allowable impurity thresholds and tailored to specific end‑use tolerances. High‑purity H2S, limited to ≤10 ppm total metallic contaminants, supplies the bulk of the semiconductor and gas‑purification markets, generating approximately 70 % of overall revenue because its cost‑performance balance meets most production specifications. Ultra‑high‑purity H2S, with impurity levels below 1 ppm, is reserved for advanced node lithography, quantum‑dot synthesis, and research‑scale processes where even trace contaminants can impair device yield; this niche accounts for the remaining 30 % of market value despite lower volumes, reflecting a premium pricing structure. A secondary sub‑type, research‑grade H2S, is often sourced from the high‑purity stream but undergoes additional filtration for laboratory use; its contribution is marginal in monetary terms but essential for innovation pipelines. The relative weight of each type directly influences capacity planning, supply‑chain logistics, and pricing strategies across the electronic‑grade H2S market.