The type segmentation of the 4 Methylphthalic Anhydride market differentiates products by purity grade, physical form, and functional modification, each influencing price points and downstream suitability. Technical grade material, comprising about 55 % of volume, meets the minimum specifications for most bulk applications such as polyester resin synthesis, where trace impurities have limited impact on product performance. High‑purity grade, representing roughly 30 % of sales, is required for sensitive adhesive formulations and specialty coatings, where impurity‑driven discoloration or premature cure can compromise end‑use quality. Granular versus powdered forms further split the market; the granular variant (≈ 40 % of total) is favored for bulk handling and transport efficiency, while the powdered form (≈ 20 %) offers superior flowability for automated dosing in high‑precision manufacturing. Functionalized derivatives, a niche segment (~ 5 %), involve chemically modified anhydrides tailored for specific polymer architectures, commanding premium pricing. Together, these type distinctions shape the market taxonomy and guide supplier differentiation strategies.