Diisodecyl Phthalate

Diisodecyl Phthalate

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IUPAC Name
Bis(8-methylnonyl) benzene-1,2-dicarboxylate
HS Code
38220090
Formula
C28H46O4
Appearance
Colorless Liquid
CAS No
68515-49-1
Common Names
Diisodecyl phthalate, DIDP – Orthophthalate
Packaging
-
Category
  • Plastisizer
Sub Category
  • Others

OVERVIEW

Orthophthalate is one of the most commonly used plasticizers in the world. There are  two types of Orthophthalates -  Low Molecular Weight (LMW) and High Molecular Weight (HMW).

Diisodecyl phthalate (DIDP) is high molecular weight (HMW) Orthophthalate.

HMW Orthophthalate contains 7-13 carbon atoms in its backbone which lends them increased permanency and durability. It is the most used Orthophthalate, with main usage being PVC production.

MANUFACTURING

Diisodecyl phthalate (DIDP) is prepared from oligomerisation process of propylene and butene to form hydrocarbons with 8 to 15 carbon atoms.
The next steps are for the hydrocarbon chains to undergo series of distillations and hydrogenations to form monohydric alcohols (mainly C10).
Diisodecyl phthalate is then produced by reaction of phthalic anhydride and isodecanol in the presence of an acid catalyst.

Diisodecyl phthalate is used as a plasticizer mainly in PVC manufacturing, including:
- Wire and Cables
- Tubes and Hoses
- Wall Covering
- Flooring and Roofing
- As well as Automotive Applications