Diisononyl phthalate

Diisononyl phthalate (CAS 28553-12-0), commonly known as DINP, is a high-molecular-weight phthalate plasticizer used across PVC and polymer processing industries. It improves flexibility and workability in rigid formulations. This chemical serves as a standard choice where durability and low volatility are procurement priorities. In building and construction, it is used in PVC flooring, roofing membranes, and window profiles.

These applications require long-term flexibility under mechanical stress. Automotive manufacturers specify it in interior trim, underbody coatings, and cable insulation due to its resistance to heat aging. Wire and cable producers rely on this plasticizer to meet electrical insulation performance requirements across a range of operating temperatures. It ensures stability in demanding environments.

In printing and packaging, it functions as a plasticizer in inks and coatings applied to flexible PVC substrates. This versatility makes it a staple in modern industrial manufacturing processes. The product is supplied as a clear, low-viscosity liquid in bulk quantities including ISO tank, flexi-tank, and drum formats. It is available in technical grade for industrial use.

This is the standard commercial specification for industrial PVC compounding. Buyers should confirm purity levels and migration compliance with relevant regional regulations when sourcing for sensitive applications.