Electro-peroxone degradation of diethyl phthalate: Cathode
Note that the DEP solution had an initial pH of 6, which then decreased to 4.5 after 15 min of the ozonation treatment (see Fig. S1 in the Supplementary data (SD)) due to the formation of various carboxylic acids from DEP degradation (see Table 1 ).
Guideline on the use of phthalates as excipients in human
on the impact of phthalate exposure are limited and therefore the clinical relevance of such findin gs remains to be established. The most commonly used phthalates in medicinal products licensed in the EU are: dibutyl phthalate (DBP), diethyl phthalate (DEP), polyvinyl acetate phthalate (PVAP), cellulose
Toxicity review of diethyl phthalate (DEP) - U.S. Consumer
In general, DEP is manufactured commercially in a closed system by esterifying phthalic anhydride with ethanol using a concentrated sulfuric acid catalyst. As with other phthalates, the unreacted alcohols are recovered and reused, and the DEP mixture is purified by vacuum distillation or activated charcoal.
Mechanism of accurate recognition and catalysis of diethyl
Diethyl phthalate (DEP) has attracted considerable interest as one of the most important PAEs because of its wide applications in plasticizers, solvents, lubricants, flavoring agents, foaming agents, alcohol denaturants and spray insecticides [ [28], [29], [30], [31] ].
Hazards of diethyl phthalate (DEP) exposure: A systematic
Background. Diethyl phthalate (DEP) is widely used in many commercially available products including plastics and personal care products. DEP has generally not been found to share the antiandrogenic mode of action that is common among other types of phthalates, but there is emerging evidence that DEP may be associated with other types of health effects.
- What is diethyl phthalate used for?
- Diethyl phthalate (DEP), a low-molecular-weight PAE, has a wide variety of applications in agricultural, industrial, and domestic applications; especially it is used asplasticizers . Due to the lack of covalent bonding with the host materials and the relatively high water solubility, DEP can readily enter the aquatic environment.
- What is the adsorption efficiency of Dep at different catalyst doses?
- The degradation of DEP at different catalyst doses (50, 100, 200 mg/L) were investigated in this study, which were shown in Fig. 6 b. As seen, the degradation efficiency of DEP was improved with CuFe 2 O 4 /MWCNTs dosage increasing from 50 to 200 mg/L. In this concentration range, the adsorption of DEP by the catalysts was also improved.
- Why is DEP resistant to biodegradation and photolytic degradation?
- However, DEP is resist to biodegradation and photolytic degradation, owing to the existence ofbenzene carboxylic group and the lack of light reaction at wavelengths >300 nm .
- How is diethyl phthalate photolysis determined?
- Pathway of diethyl phthalate photolysis in sea-water determined bygas chromatography–mass spectrometry and compound-specific isotope analysis Ultrason. Sonochem., 20 ( 2013), pp. 892 - 899
- What are phthalate esters?
- Phthalate esters (PAEs) are a category of organic compounds widely used as additives to improve the durability and flexibility of polymeric materials . Diethyl phthalate (DEP), a low-molecular-weight PAE, has a wide variety of applications in agricultural, industrial, and domestic applications; especially it is used as plasticizers .
- How does HA concentration affect DEP degradation?
- With an increase in HA concentration, the degradation rates of DEP decreased gradually. In UV/H 2 O 2 treatment, the K is 0.06356, 0.03651, 0.03187, and 0.02493 for 0, 2, 4, and 8 mg/L HA concentration. In UV/TiO 2 treatment, the K is 0.0333, 0.1973, 0.01693, and 0.01398 for 0, 2, 4, and 8 mg/L HA concentration.