As DOP shows well-balanced each performance, it is a typical general purpose plasticizer used most widely as a vinyl chloride resin plasticizer.

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The vinyl chloride resin products plasticized with DOP generally has superior low temperature flexibility, thermal stability, abrasion resistance, heat aging resistance, and electricity insulation property. It also has high durability against extraction by grease, mineral oil, water, and soap water.


Chemical name Bis(2-ethylhexyl) phthalate (DEHP)
Dioctyl phthalate (DOP)
CAS number 117-81-7
Existing chemical number 3-1307
Formula C24H38O4
Molecular weight 391
Structural formula
Functional group/compound classification Benzene ring, ester bond
Flow point (°C) -55
Boiling point (°C/101.3kPa) 386
Specific gravity (20/20°C) 0.986
Flash point (°C, open) 218
Ignition point (°C) 400
Aqueous solubility (ppm, 25°C) 0.5 or less
Fire Service Act Hazardous material, Class 4 Petroleum No. 4
Poisonous and Deleterious Substances Control Law Not applicable



DOP is a typical general purpose plasticizer used for wide range of flexible PVC products.

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