DPHP Plasticizer
DPHP Plasticizer, or Di(2-propylheptyl) Phthalate, is a clear, colorless, and viscous liquid primarily used to improve the flexibility, durability, and low-temperature performance of plastic materials, especially in high-performance PVC applications. It offers excellent resistance to weathering and aging, making it ideal for outdoor and long-life products. DPHP is insoluble in water but soluble in most organic solvents.
- Molecular Formula: C₂₈H₄₆O₄
- CAS Number: 53306-54-0
- Grade: Industrial Grade
- HS Code: 29173200
What is DPHP Plasticizer?
DPHP (Di(2-propylheptyl) Phthalate) is an advanced general-purpose plasticizer engineered for demanding environments where long-term performance and stability are essential. Known for its superior migration resistance and low volatility, DPHP delivers reliable plasticizing action without compromising the structural integrity of PVC compounds over time.
This high molecular weight plasticizer is widely recognized for enabling manufacturers to meet stringent regulatory and quality standards, particularly in applications requiring excellent thermal stability, minimal emissions, and high mechanical strength. Its performance is especially valued in applications such as automotive trims, high-voltage cable insulation, and polymer roofing systems.
DPHP maintains consistent processing characteristics during extrusion and molding, offering a stable formulation window for both rigid and flexible PVC systems. Its ability to support extended service life and resist external stressors like heat, UV exposure, and chemical contact makes it a trusted component in critical infrastructure and industrial products.
Technical Parameters
| Item | Superior-Grade Product | First-rate Product | Test Result |
| Color (Platinum-Cobalt), No. | ≤25 | ≤40 | 25 |
| Density (20°C), g/cm³ | 0.957 – 0.965 | 0.957 – 0.965 | 0.965 |
| Purity, % | ≥99.5 | ≥99.0 | 99.69 |
| Acidity (as phthalic acid), % | ≤0.05 | ≤0.10 | 0.02 |
| Water Content, % | ≤0.05 | ≤0.15 | 0.02 |
| Flash Point, °C | ≥210 | ≥205 | 210 |
| Volume Resistivity, 1×10¹²Ω·m | ≥1.0 | ≥0.5 | 1.3 |
Packing Specification
- 200 kg Plastic Drums
- 1000kg IBC drums
- 23 MT Flexitank
Support customize the packaging materials
Comparison of DPHP and DINP
| Feature | DPHP | DINP |
|---|---|---|
| Plasticizing Efficiency | Higher plasticizing efficiency with superior long-term performance | Moderate efficiency, stable for general-purpose use |
| Thermal Stability | Superior thermal stability, suitable for high-temperature applications | Good thermal stability |
| Aging Resistance | Excellent long-term aging resistance | Good aging resistance, but lower than DPHP |
| UV and Weather Resistance | Better UV and weather resistance | Decent UV resistance, less than DPHP |
Standard Loading Details
Packaging: 200 kg Plastic Drums
- 16 tons per 20-foot container with or without pallets
Packaging: 1000 KG Super Sack
- 20 tons per 20-foot container
The Safety Data Sheet (SDS) of DPHP Plasticizer
Safety is our top priority.
To ensure your safety when using DPHP, please contact us for a Material Safety Data Sheet (MSDS).
This document provides detailed safety guidance on how to deal with potential hazards, incident response, and proper storage methods. It will help you understand and safely use DPHP to ensure personal safety and environmental protection.
FAQs about DPHP Plasticizer
Is your DPHP compliant with international safety and environmental regulations (e.g., REACH, RoHS)?
Yes. Our DPHP is produced in accordance with global standards and is fully compliant with REACH and RoHS directives. Relevant documentation and certifications (such as SDS, COA, etc.) can be provided upon request.
In what environments is DPHP the most suitable plasticizer?
DPHP is especially recommended for applications requiring long-term durability, heat resistance, and weather stability. It performs best in the following conditions:
High-temperature environments – such as automotive interiors or insulated cables exposed to heat.
Outdoor exposure – including roofing materials, banners, and tarpaulins, where UV and weather resistance are critical.
Long-life products – like flooring, wall coverings, or building materials that require excellent aging performance.
Low-emission applications – including car interiors, indoor furnishings, and medical supplies, where low VOC and fogging are important.
Its superior plasticizing efficiency and long-term reliability make DPHP a preferred choice over traditional plasticizers like DINP or DOP in these scenarios.
What is your lead time and delivery capacity?
For regular orders, lead time is generally 7–10 working days. For urgent or bulk quantities, we can expedite production and arrange shipment according to your schedule. Our monthly supply capacity exceeds 500 MT, ensuring steady availability.
Do you offer samples for quality evaluation?
Yes, free samples (500g–1kg) are available for testing purposes. Shipping costs can be covered by the buyer or deducted from future orders. Please contact us to request a sample.