Diisodecyl Phthalate – High-Performance Plasticizer for Flexible PVC and Industrial Polymer Applications
Introduction
Diisodecyl Phthalate (DIDP) is a high-molecular-weight phthalate ester widely used as a plasticizer in flexible polyvinyl chloride (PVC) and other compatible polymer formulations. It is typically a clear, colorless to pale yellow, oily liquid with low volatility and good compatibility with suitable PVC resin systems.
DIDP is valued for its ability to improve the flexibility, durability, and processing characteristics of plastic materials. It is commonly used in electrical cable insulation, flooring, automotive components, synthetic leather, and various industrial PVC products.
Its low volatility and relatively high molecular weight make it suitable for selected applications requiring long-term flexibility and resistance to plasticizer loss under normal service conditions.
Industrial Applications
- Flexible PVC Manufacturing: Used as a plasticizer to improve the flexibility and processing properties of PVC compounds.
- Wire and Cable Insulation: Applied in selected electrical cable insulation and sheathing formulations requiring flexibility and thermal durability.
- Automotive Components: Used in suitable flexible PVC materials for automotive interiors, protective coverings, and other components.
- Vinyl Flooring: Incorporated into selected PVC flooring materials to provide flexibility and durability.
- Synthetic Leather: Used in compatible artificial leather and coated-fabric formulations.
- Industrial Films and Sheets: Supports the production of flexible PVC films, sheets, and protective coverings.
- Coated Fabrics: Used in selected PVC-coated textiles and industrial fabric applications.
- Sealants and Polymer Compounds: May be used in compatible specialty formulations where plasticization is required.
Key Benefits
- Effective Plasticization: Improves flexibility and softness in compatible PVC formulations.
- Low Volatility: Helps reduce plasticizer loss during suitable processing and service conditions.
- Good Heat-Aging Performance: Supports flexibility retention in properly formulated PVC materials exposed to elevated temperatures.
- Durable Polymer Performance: Contributes to the long-term flexibility of selected finished products.
- PVC Compatibility: Suitable for many flexible PVC resin systems.
- Versatile Industrial Applications: Used in cables, flooring, automotive materials, coated fabrics, and other polymer products.
- Processing Efficiency: Helps achieve desired flexibility and processing characteristics in compatible compounds.
Product Specifications
| Parameter | Details |
|---|---|
| Product Name | Diisodecyl Phthalate |
| Abbreviation | DIDP |
| Chemical Family | Phthalate Ester |
| Typical Chemical Formula | C₂₈H₄₆O₄ |
| CAS Number | 26761-40-0 |
| Other Commercial CAS Reference | 68515-49-1 |
| Molecular Weight | Approximately 446.67 g/mol |
| Appearance | Clear, colorless to pale yellow oily liquid |
| Odor | Mild, characteristic odor |
| Density | Approximately 0.96–0.97 g/cm³ at 20°C |
| Water Solubility | Very low |
| Chemical Type | High-molecular-weight plasticizer |
| Primary Applications | Flexible PVC, cable insulation, flooring, automotive materials |
| Packaging | Drums, IBCs, or bulk supply, subject to availability |
| Grade | Industrial or specified technical grade, depending on supplier |
Note: Commercial DIDP is generally a mixture of branched isomers, and its exact composition and properties can vary by manufacturing process and supplier. CAS identification, viscosity, density, purity, and other specifications should be verified using the current Technical Data Sheet (TDS) and Certificate of Analysis (COA).
Storage and Handling
Diisodecyl Phthalate should be handled using appropriate industrial safety procedures. Although it has relatively low volatility, unnecessary skin and eye contact should be avoided.
Use suitable chemical-resistant gloves, protective clothing, and eye protection. Provide adequate ventilation during handling, particularly when processing the material at elevated temperatures.
Store in tightly closed, compatible containers in a cool, dry, well-ventilated location away from excessive heat and incompatible substances, including strong oxidizing agents.
Prevent spills from entering drains, soil, or waterways. Product use may be subject to chemical-specific restrictions, particularly for certain consumer products, toys, and childcare applications.
Always consult the supplier's Safety Data Sheet (SDS) and applicable regulations before use.
Quality and Supply
Diisodecyl Phthalate may be supplied in industrial grades and packaging formats suitable for polymer manufacturing and related applications.
Important purchasing considerations include viscosity, color, density, purity, volatility, and compatibility with the intended PVC formulation.
Buyers should confirm the product's exact CAS identification, technical specifications, packaging requirements, and regulatory suitability before placing an order.
The TDS, Certificate of Analysis (COA), and SDS should be reviewed to verify product quality and safe handling requirements.
Conclusion
Diisodecyl Phthalate (DIDP) is an important industrial plasticizer used in flexible PVC manufacturing, cable insulation, flooring, automotive materials, and coated fabrics. Its low volatility, plasticizing efficiency, and compatibility with suitable polymer systems make it useful for applications requiring flexibility and durability.
Selecting the appropriate grade and following recommended storage, handling, and regulatory requirements help maintain consistent product performance and manufacturing quality.
Contact our team for product specifications, available packaging options, and supply information for Diisodecyl Phthalate.
