The empirical formula of diisooctyl phthalate (DIOP) is
C24H38O4. The structural formula of DIOP varies because
the iso-alcohols used in the manufacture contain several
isomers. DIOP is insoluble in water, but
it is soluble in organic solvents.
Its major
use is as a plasticizer.
Diisooctyl Phthalate can be used as a plasticizer.
DIOP is manufactured by the reaction of phthalic anhydride
with isooctanol in the presence of an acid catalyst.
ChEBI: Diisooctyl phthalate is a phthalate ester and a diester.
Oily colorless liquid with a slight ester odor. Denser than water. Insoluble in water.
Diisooctyl phthalate reacts exothermically with acids to generate isooctyl alcohol and phthalic acid. Strong oxidizing acids may cause a vigorous reaction that is sufficiently exothermic to ignite the reaction products. Heat is also generated by interaction with caustic solutions. Flammable hydrogen is generated by mixing with alkali metals and hydrides. Can generate electrostatic charges. [Handling Chemicals Safely, 1980. p. 250].
Produces no ill effects at normal temperatures but may give off irritating vapor at high temperature.
Special Hazards of Combustion Products: None
