Diisononyl Phthalate (DINP) is a high-molecular-weight, general-purpose, non-phthalate-alternative phthalate plasticizer widely regarded as the industry standard replacement for DOP/DEHP. It offers an outstanding balance of flexibility, durability, low volatility, excellent processing characteristics, and superior long-term performance in flexible PVC applications.

 

Technical Specifications

ITEMS SPECIFICATIONS
Appearance Transparent oily liquid
Content ≥99.0%
Chroma (Pt-Co) ≤30
Density (20°C), g/cm³ 0.971-0.977
Acid Value (mgKOH/g) ≤0.06
Moisture ≤0.1%
Flash Point ≥210°C
Volume Resistivity×10⁹Ω·m ≥3.0

 

Packaging and Storage

  • Net weight 200kg steel drum,16MT/FCL with pallets.
  • Store in cool place. Keep container tightly closed in a dry and well-ventilated place.

 

Main Advantages of Diisononyl Phthalate (DINP)

  • Excellent permanence and very low volatility (ideal for high-temperature and long-life applications)
  • Superior fogging resistance – preferred in automotive interiors
  • Outstanding resistance to extraction by water, oils, and detergents
  • Very good low-temperature flexibility combined with heat stability
  • Easy processing and fast gelation in PVC plastisols
  • Cost-effective with excellent overall performance-to-price ratio
  • Globally approved for most flexible PVC uses (except children’s toys < 3 years and certain mouth-contact articles)

 

Primary Applications of Diisononyl Phthalate (DINP)

  • Automotive interior parts (instrument panels, door panels, seat covers)
  • Wire & cable insulation and jacketing (60°C – 105°C rated)
  • Flooring and wall coverings
  • Coated fabrics and artificial leather
  • Roofing membranes and tarpaulins and banners
  • Inks, sealants, and adhesives
  • General-purpose PVC films and sheets (non-food, non-medical)

 

Frequently Asked Questions (FAQs)

Is DINP considered a “non-phthalate” plasticizer?
No. DINP is a high-molecular-weight phthalate, but it is widely regarded as the safest and most studied phthalate and is explicitly permitted in almost all applications except toys and childcare items.

Why did the industry switch from DOP/DEHP to DINP?
DINP offers lower volatility, better permanence, superior fogging resistance, and a significantly improved toxicological profile compared to DEHP, while maintaining similar cost and processing characteristics.

Is DINP suitable for automotive interior specifications?
Yes. DINP meets all major OEM specifications for low fogging (SAE J1756, ISO 17071), low-VOC requirements and is the most widely used plasticizer in global automotive PVC.

How does DINP compare to DOTP (DEHT)?
DINP provides better low-temperature flexibility and lower plastisol viscosity, while DOTP offers slightly better heat stability and is marketed as phthalate-free. DINP remains more cost-effective and widely accepted.

 

Where can I buy high-quality Diisononyl Phthalate (DINP)?

You can contact us via email [email protected] for offers and bulk orders.