Diisononyl Phthalate (DINP)

Diisononyl Phthalate (DINP) is a widely used high molecular weight plasticizer valued for its ability to enhance the flexibility, durability, and processing efficiency of polymer systems. With low volatility, excellent heat stability, and strong resistance to migration, DINP is especially effective in polyvinyl chloride (PVC) applications, where it extends service life and maintains reliable performance under demanding conditions. It is commonly used in wire and cable insulation, flooring, wall coverings, automotive interiors, and flexible vinyl products, providing softness, resilience, and long-term durability.

Beyond PVC, DINP is incorporated into adhesives, sealants, coatings, and specialty elastomers, where it supports formulation stability and product performance. It also plays an important role in construction materials, consumer goods, and packaging, offering a balance of cost-effectiveness and functionality. With its broad compatibility, established track record, and favorable safety profile, DINP remains one of the most trusted plasticizers across industries including automotive, construction, electrical, consumer products, and specialty chemical manufacturing.

Synonyms: Diisononyl 1,2-benzenedicarboxylate, di-C9 phthalate, diisononyl phthalate ester

Characteristics:

IUPAC Name: Bis(7-methyloctyl) benzene-1,2-dicarboxylate

CAS Number: 28553-12-0

UN Number: N/A

Available Sizes: Bulk, Drum, Pail, Gallon

Recommended Use / Industries:

• PVC flooring and wall coverings
• Automotive upholstery
• Adhesives and sealants
• Wire and cable jacketing