Diisobutyl Phthalate
DIBP, Di-iso-butyl Phthalate.
- CAS
- 84-69-5
- EC
- 201-553-2
- Sectors
- Plastics & Polymers, Coatings, Adhesives, Sealants & Elastomers, Printing & Packaging
Diisobutyl Phthalate (CAS 84-69-5) is a phthalate ester plasticizer supplied as a colorless to light yellow clear liquid in neat form, valued as a fast-fusing primary plasticizer that improves flexibility and durability in vinyl polymers and is used in PVC processing, industrial lacquers, and PVA-based adhesives. This Technical Grade oily liquid is valued for its excellent low-temperature performance and rapid fusion rates.
It is particularly effective in nitrocellulose lacquers and cellulose ethers, where it provides superior crack resistance and film elasticity. As a fast-fusing plasticizer, it optimizes production speeds in PVC processing and molding.
DIBP is also utilized in the manufacture of sealants and adhesives, offering excellent compatibility with diverse resin systems. Its low viscosity facilitates ease of handling in automated pumping and dosing equipment.
Typical Properties
| Molecular formula | C16H22O4 |
|---|---|
| Molecular weight | 278.34 g/mol |
| Appearance | clear liquid |
| Form | neat |
| Color | Colorless to Light yellow |
| Odor | Practically odorless when pure |
| Melting point | -64 °C |
| Boiling point | 296.5 °C |
| Density | 1.039 g/cm³ @ Temp: 20 °C |
| Water solubility | Insoluble |
| Flash point | >230 °F |
| GHS signal word | Danger · Irritant / harmful, Health hazard, Environmental hazard |
| HS code | 29173400 |
| Grades available | Technical Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Diisobutyl Phthalate
Applications
- PVC Processing: Enhances the flexibility and impact resistance of vinyl films, cables, and flooring materials.
- Coating Additive: Improves the durability and gloss of industrial lacquers and protective wood coatings.
- Adhesive Formulation: Acts as a softening agent in PVA-based adhesives to prevent brittleness in bonded joints.
Safety & Risks
Classified as Toxic to Reproduction. Restricted in sensitive applications. Use Chemical Gloves, Safety Glasses, and ensure Total Containment.
Packaging
200 kg Metal Drums or 1000 kg IBC Tanks.