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Dioctyl phthalate ≥99.5% Synonym (s): Bis (2-ethylhexyl) phthalate, DEHP, DOP, Phthalic acid bis (2-ethylhexyl ester) Linear Formula: C6H4-1,2- [CO2CH2CH (C2H5) (CH2)3CH3]2 CAS Number: 117-81-7 Molecular Weight: 390.56 Beilstein: 1890696 EC Number: 204-211-0 MDL number: MFCD00009493 PubChem Substance ID: 24893594 NACRES: NA.22

The price of Dioctyl Phthalate (DOP) escalated upwards in Q1 2025, owing to the steep increase in the prices of crude coupled with better demand from the downstream market, with prices ranging around USD 1875/ton FOB New York at the end of March.

Dioctyl phthalate (also known as DEHP or di-2-ethylhexyl phthalate) is a type of phthalate, which is a class of chemicals that are used as plasticizers to make plastics more flexible and durable. DEHP is commonly used in the manufacture of polyvinyl chloride (PVC) plastic products, such as pipes, wire and cable coatings, and inflatable products.

Dioctyl Phthalate is one of the most widely used plasticizers in PVC due to its low cost. DOP is a general-purpose plasticizer and long-time industry standard known for its good stability to heat and ultraviolet light, and broad range of compatibility for use with PVC resins. Dioctyl Phthalate can also be used as dielectric and hydraulic fluids.

Dioctyl Phthalate (a.k.a. DOP, DEHP, Diethylhexyl Phthalate) is a non-volatile colorless liquid, insoluble in water, and with a mild odor. Generally, it is obtained from the butyraldehyde dimerization, and corresponds to the phthalate ester of 2-ethylhexanol. In Western Europe, about half of all plasticizers used is made of Dioctyl Phthalate