and the industry development prospects are not optimistic.

dioctyl phthalate, or dop, is an organic ester compound. it appears as a colorless and transparent liquid, insoluble in water, and soluble in ethanol, ether, and mineral oil. according to different application scenarios, dop can be divided into four categories: general-grade dop, food-grade dop, medical-grade dop, and electrical-grade dop. the main production processes of dop include acidic processes and non-acidic processes. both production processes require esterification,…