Di-n-octyl phthalate (DOP)

Dioctyl phthalate (DOP) is an organic ester compound commonly used as a plasticizer.
Chinese name: Dioctyl phthalate; English name: Dioctyl Phthalate; Alias: 1,2-Benzenedicarboxylic acid dioctyl ester, Dioctyl phthalate
Chemical formula: C24H38O4
Molecular weight: 390.55
CAS Registry Number: 117-81-7
EINECS Registry Number: 204-211-0
Melting point: -25 ℃
Boiling point: 416.4 ℃; Water solubility: Slightly soluble
Density: 0.985 g/cm³
Appearance: Colorless transparent liquid
Flash point: 222.29 ℃
Main applications:
DOP is a general-purpose plasticizer primarily used in the processing of polyvinyl chloride (PVC) resins. It is also applicable in the processing of high polymers such as chemical resins, acetate resins, ABS resins, and rubber. Additionally, it is used in paint manufacturing, dyes, dispersants, etc. DOP-plasticized PVC can be employed to produce artificial leather, agricultural films, packaging materials, cables, etc.
Organic solvent, gas chromatography stationary phase
Industrially, it is the most widely used plasticizer. Except for cellulose acetate and polyvinyl acetate, it exhibits good compatibility with most synthetic resins and rubbers used industrially. It offers comprehensive performance, good mixing properties, high plasticizing efficiency, low volatility, excellent low-temperature flexibility, resistance to water extraction, high electrical properties, as well as good heat resistance and weather resistance.
In HVAC (Heating, Ventilation, and Air Conditioning), it is used to test the filtration efficiency of high-efficiency filters.