The types segment classifies the product into distinct chemical forms that determine handling, formulation, and downstream processing. The primary type is the free acid, which remains the most widely traded due to its direct applicability in synthesis routes; it typically commands the highest market share because it requires minimal pre‑treatment. Ester derivatives—including methyl, ethyl, and isopropyl esters—constitute a secondary tier, valued for enhanced solubility and stability in organic media, thereby expanding usage in coating and adhesive formulations. Sodium and potassium salts form a third category, favored in aqueous processes where neutral pH and improved dispersibility are required, especially in agrochemical formulations. A niche amide variant is produced for specialty polymer cross‑linking, reflecting a modest but growing demand. Each type’s share is proportional to its functional advantage and cost structure, collectively supporting the broader market taxonomy and influencing supply‑chain dynamics.