Diisodecyl Phthalate (DIDP)

Diisodecyl Phthalate (DIDP) is a high molecular weight plasticizer widely used to improve the flexibility, durability, and processability of polymer systems. Known for its low volatility, excellent heat stability, and weather resistance, DIDP is a preferred choice in polyvinyl chloride (PVC) applications, where long service life and consistent performance are essential. It is extensively used in wire and cable insulation, automotive interiors, flooring, roofing membranes, and flexible vinyl products, delivering softness, resilience, and long-term stability.

Outside PVC, DIDP is incorporated into adhesives, sealants, coatings, and specialty polymers, where it offers tailored plasticizing properties that enhance product performance and longevity. Its high resistance to migration makes it especially valuable in outdoor applications, electrical systems, and construction materials. With its combination of efficiency, safety, and proven reliability, diisodecyl phthalate continues to be an essential material across industries such as automotive, construction, electrical, consumer goods, and specialty chemical manufacturing.

Synonyms: Diisodecyl 1,2-benzenedicarboxylate, di-C10 phthalate, diisodecyl phthalate ester

Characteristics:

IUPAC Name: bis(8-methylnonyl) benzene-1,2-dicarboxylate

CAS Number: 26761-40-0

UN Number: 3082

Available Sizes: Bulk, Drum, Pail, Gallon

Recommended Use / Industries:

• Flexible PVC products (cables, flooring)
• Automotive interiors
• Building and construction materials
• Wire and cable insulation