Overview
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.
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Physical Properties
| Melting Point | -43 °C |
| Boiling Point | 244-252 °C @ Press: 5 Torr |
| Density | 1 x 10<sup>-6</sup> g/cm³ @ Temp: 20 °C |
| Flash Point | 235 °C |
| Color | Colourless |
| Form | Oil |
| Water Solubility | <0.1 g/100 mL at 21 ºC |
| Vapor Pressure | 1 mmHg ( 200 °C) |
| Refractive Index | n20/D1.485(lit.) |
| Log P | 9.026 (est) |
Safety & Handling
Warning GHS08 Hazard Statements H351 Suspected of causing cancer H360 May damage fertility or the unborn child H361 Suspected of damaging fertility or the unborn child Precautionary Statements P203 Obtain, consult and follow expert instructions for use. P280 Wear protective gloves/protective clothing/eye protection/face protection. P318 IF exposed or concerned, get medical advice. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations.
Trade & Regulatory
| HS Code | 2917.34.0150 |
| Storage Class | 10 - Combustible liquids |
| WGK (Germany) | 3 |
Other Names
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Chemical Properties
- CAS Number
- 28553-12-0
- EC Number
- 249-079-5
- Mol. Weight
- 418.6
- HS Code
- 2917.34.0150
- Category
- Oils, Fats & Waxes