Plasticizers
REACH
Diisononyl phthalate
CAS Number
28553-12-0
EC Number
249-079-5
Abbreviation
DINP
What is Diisononyl phthalate?
Diisononyl phthalate (CAS 28553-12-0), commonly known as DINP, is a high-molecular-weight phthalate plasticizer used in PVC and polymer processing.
Where is Diisononyl phthalate used?
- Building and construction: PVC flooring, roofing membranes, window profiles
- Automotive: interior trim, underbody coatings, cable insulation
- Wire and cable: electrical insulation performance across operating temperatures
- Printing and packaging: plasticizer in inks and coatings on flexible PVC substrates
- It improves flexibility and workability in rigid formulations.
Good to know: Buyers should confirm purity levels and migration compliance with relevant regional regulations when sourcing for sensitive applications.
Commercial specifications
- Bulk quantities: ISO tank, flexi-tank, drum formats
Other Names (Synonyms)
Bis(7-methyloctyl) benzene-1,2-dicarboxylate|Diisononylphthalate|DINP
What are the physical properties of Diisononyl phthalate?
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)
How is Diisononyl phthalate classified and handled safely? Learn More
Warning
GHS08· Health Hazard
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.
Which trade and regulatory codes apply to Diisononyl phthalate?
HS Code 2917.34.0150
Storage Class 10 - Combustible liquids
WGK (Germany) 3