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- Are phthalates a good plasticizer?
- Phthalates are the most commonly used type of plasticizers and are popular due to their relatively low cost, low volatility, and ability to create very elastic materials. Today, phthalates are the most ubiquitous man-made chemicals found in the environment .
- What phthalates are found in Plasticized PVC?
- In the electronics industry, plasticized PVC forms the coatings on wires and various plastic parts in electronic devices. Some of the most common phthalates found in PVC applications include DEHP, DBP, DEP, and DiNP.
- Can phthalate plasticizers leach out into ground water?
- Upon disposal, phthalate plasticizers, which are incorporated into electronic components, can leach out into the ground water . Polypropylene (PP) is a low-cost polymer that is commonly used to produce plastics that have good mechanical properties for manufacturing, including high stiffness and heat resistance.
- Do phthalates with long ester chains biodegrade easily?
- However, phthalates with long ester chains, such as DCHP, DHP, DOP, and DEHP, do not biodegrade easily . The biodegradability of longer ester chained phthalates can be due to the spacing of the atoms in the phthalate side ester chain, which inhibits the ester’s ability to bind to the hydrolytic enzymes, thereby impeding the hydrolysis process.
- Are phthalates degraded in wastewater treatment?
- The discharge from sewage works is a major source of phthalates in the environment. DEP and DEHP were found to be the most common phthalates with ranges of 1–74 and 28–122 μg/L, respectively. Generally, phthalates are not degraded in the wastewater treatment process due to their high hydrophobicity and low solubility.
- How are phthalates excreted?
- This process usually occurs with longer-branched phthalates, and the resulting conjugates are excreted through the urine . Each phthalate has several metabolites that are hydrolyzed and eventually passed through the urine. The following figure illustrates the metabolic pathways of phthalates .
