The Types segmentation categorizes DEA by purity and physical form, each affecting end‑use suitability and price structure. Technical grade DEA, typically 95–98% purity, dominates the bulk chemicals segment, serving cost‑sensitive applications like rubber additives and general‑purpose intermediates, and contributes the largest share of volume sales. Specialty grade DEA, refined to 99%+ purity, is reserved for high‑performance sectors such as agrochemical synthesis and advanced polymer production, where impurity tolerance is minimal, thereby generating higher per‑kilogram revenue despite lower volumes. Pharmaceutical grade DEA, exceeding 99.5% purity with stringent residual solvent limits, is a niche offering for drug‑intermediate synthesis, reflecting the highest price point but minimal market share. Physical form distinctions—liquid versus solid (crystalline) DEA—further differentiate logistics and handling costs; liquid DEA is preferred for continuous processing, while solid DEA is favored for batch reactors requiring precise dosing. This taxonomy underscores how type differentiation shapes the overall market dynamics.