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中文简体Di(2-propylheptyl) phthalate (DPHP), also known as bis(2-propylheptyl) phthalate or di(2-propylheptyl) orthophthalate, is a phthalate ester plasticizer commonly used in polyvinyl chloride (PVC) applications. It is a colorless, odorless, and viscous liquid with the chemical formula C28H46O4. DPHP is known for its excellent plasticizing efficiency, low volatility, and good heat resistance, making it a suitable substitute for DEHP and DINP in various applications.
Properties of DPHP Plasticizer
DPHP exhibits several properties that make it a valuable plasticizer for PVC:
High Plasticizing Efficiency: DPHP imparts flexibility and softness to PVC resins effectively, even at low concentrations.
Low Volatility: DPHP has a low vapor pressure, minimizing evaporation and ensuring long-term product integrity.
Good Heat Resistance: DPHP maintains its plasticizing properties at elevated temperatures, making it suitable for high-temperature applications.
Low Migration: DPHP shows minimal migration from the PVC matrix, preventing surface exudation and ensuring product stability.
Electrical Properties: DPHP offers good electrical insulation properties, making it suitable for wire and cable applications.
Environmental Performance: DPHP is considered less toxic than some other phthalate plasticizers, such as DEHP and DINP.
Applications of DPHP Plasticizer
DPHP finds extensive use in various PVC applications, including:
Building and Construction Materials: DPHP is used in PVC pipes, fittings, profiles, and flooring materials.
Automotive Components: DPHP is employed in automotive interior trim, wire and cable insulation, and underbody coatings.
Consumer Products: DPHP is found in toys, footwear, and other consumer goods made from PVC.
Medical Devices: DPHP is used in some medical devices due to its biocompatibility and plasticizing properties.
Packaging Materials: DPHP is employed in PVC films and packaging materials for various products.
Safety Considerations for DPHP Plasticizer
While DPHP is generally considered less toxic than some other phthalates, it is essential to handle it with care and follow safety guidelines:
Avoid Inhalation and Skin Contact: Minimize inhalation of DPHP vapors and avoid direct skin contact.
Use Proper Ventilation: Ensure adequate ventilation in areas where DPHP is handled or processed.
Wear Personal Protective Equipment: Wear appropriate personal protective equipment, including gloves, safety glasses, and respiratory protection, when handling DPHP.
Follow Storage and Handling Procedures: Store DPHP in well-sealed containers in a cool, dry place away from heat and direct sunlight.
Comply with Regulatory Requirements: Adhere to all applicable occupational safety and health regulations related to DPHP handling.
