Category: 6197-30-4

On June 4, 2021, Li, Guosong; Huang, Guanwang; Sun, Ruixia; Curran, Dennis P.; Dai, Wen published an article.Recommanded Product: 6197-30-4 The title of the article was Regioselective Radical Borylation of α,β-Unsaturated Esters and Related Compounds by Visible Light Irradiation with an Organic Photocatalyst. And the article contained the following:

Radical hydroboration reactions have only recently been reported and are still rare. Here the authors describe a photoredox radical hydroboration of α,β-unsaturated esters, amides, ketones, and nitriles with NHC-boranes that uses only an organocatalyst and visible light. The conditions are mild, the substrate scope is broad, and the α/β regioselectivity is high. The reaction requires only the organocatalyst; there is no costly metal, and there are no other additives (base, cocatalyst, initiator). The experimental process involved the reaction of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate(cas: 6197-30-4).Recommanded Product: 6197-30-4

The Article related to unsaturated ester amide nitrile regioselective photochem radical borylation organocatalyst, boryl ester amide nitrile preparation, Organometallic and Organometalloidal Compounds: Boron Compounds and other aspects.Recommanded Product: 6197-30-4

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On May 31, 2020, O’Malley, Elissa; O’Brien, Jake W.; Verhagen, Rory; Mueller, Jochen F. published an article.Application In Synthesis of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate The title of the article was Annual release of selected UV filters via effluent from wastewater treatment plants in Australia. And the article contained the following:

We assessed the annual release of UV filters from wastewater treatment plant effluent in Australia and evaluated the removal of these chems. during wastewater treatment. Effluent samples were collected from 33 sites alongside matching influent samples. Sample collection predominately occurred during the Australian Census in August 2016, which allowed for accurate per capita normalization of the results. A subset of sites was also sampled over the Southern Hemisphere summer (Dec.-Feb.) period. Five UV filters were detected with at least one detected in 95% of effluent samples. The summed concentration of UV filters ranged from 130 ng L-1 to 8400 ng L-1 and averaged 2800 (±1900) ng L-1. Of the target UV filters, 2-phenylbenzimidazole-5-sulfonic acid (PBSA) and benzophenone 4 (BP4) showed the lowest removal efficiencies (11 ± 36% and 51 ± 43%, resp.) across all sites and were the most abundant in effluent. Average estimated removal efficiencies of the other compounds were between 59 (±24) % (4-methylbenzylidene camphor (4-MBC)) and 74 (±22) % (benzophenone 1 (BP1)). We did not find a trend in seasonal differences in the per capita release of UV filters in effluent samples. We estimate that approx. 40% of UV filter loads measured in influent are breaking through to the effluent resulting in the release of approx. 20 kg day-1 of the selected UV filters into the aquatic environment from treated wastewater effluent in Australia. The experimental process involved the reaction of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate(cas: 6197-30-4).Application In Synthesis of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate

The Article related to uv filter wastewater treatment plant effluent australia, australia, effluent, personal care products, sunscreen, uv filters, wastewater treatment, Waste Treatment and Disposal: Physical Treatment Of Aqueous Wastes and other aspects.Application In Synthesis of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On June 20, 2022, Fagervold, S. K.; Lebaron, P. published an article.Safety of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate The title of the article was Evaluation of the degradation capacity of WWTP sludge enrichment cultures towards several organic UV filters and the isolation of octocrylene-degrading microorganisms. And the article contained the following:

Organic UV filters are present in wastewater treatment plants (WWTPs) due to the use of these compounds in many personal care products (PCPs) and their subsequent release into the wastewater system from showering/bathing. Once in the wastewater system, organic UV filters generally partition into the solid phase but might also undergo other processes, such as degradation by microorganisms. To further understand the fate of organic UV filters in WWTPs, the degradation of 7 UV filters by WWTP sludge was investigated The UV filters 2-ethylhexyl salicylate (ES), homosalate (HS), Bu methoxydibenzoylmethane (BM) and octocrylene (OC) were degraded after 20-60 days. The rest of the filters tested, namely, bis-ethylhexyloxyphenol methoxyphenyl triazine (BEMT), methylene bis-benzotriazolyl tetramethylbutylphenol (MBBT) and diethylhexyl butamido triazone (DBT), did not degrade even after 120 days of incubation. The microbial community from the microcosms degrading ES, HS, OC and BM was transferred every 30 days into new microcosms to enrich for microorganisms capable of utilizing the individual UV filters for growth. The enrichment cultures continued to degrade throughout 20 transfers. The microbial community was clearly different between the enrichments degrading ES, HS, OC and BM, meaning that the microbial community was strongly influenced by the UV filter present. Furthermore, several strains were isolated from OC-degrading cultures and two of these strains, Gordonia sp. strain OC_S5 and Sphingopyxis sp. strain OC_4D, degraded OC with and without other carbon sources present. These experiments show that several organic UV filters can be degraded by a specific set of microorganisms. The lack of degradation observed for BEMT, MBBT and DBT is probably due to limited bioavailability. Indeed, this is the first biodegradation study of these filters, in addition to being the first description of ES and HS degradation in microcosm experiments The experimental process involved the reaction of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate(cas: 6197-30-4).Safety of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate

The Article related to octocrylene degrading microorganism wastewater treatment plant degradation capacity, degradation, pure bacterial strains, uv filters, wastewater sludge, Waste Treatment and Disposal: Physical Treatment Of Aqueous Wastes and other aspects.Safety of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On February 1, 2021, O’Malley, Elissa; McLachlan, Michael S.; O’Brien, Jake W.; Verhagen, Rory; Mueller, Jochen F. published an article.Application In Synthesis of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate The title of the article was The presence of selected UV filters in a freshwater recreational reservoir and fate in controlled experiments. And the article contained the following:

UV filters present in sunscreen and other cosmetics are directly released into the environment during aquatic recreational activities. The extent to which the wide range of UV filters pose a risk to the environment remains unclear. This study investigated the occurrence and dissipation of selected organic UV filters at a recreational site (Enoggera Reservoir, Queensland, Australia) over 12 h. Furthermore, different possible degradation processes were investigated in a controlled off-site experiment with surface water exposed to natural light. Half-lives were estimated for ten UV filters. In Enoggera Reservoir, seven UV filters were detected, of which the most prevalent were octocrylene, avobenzone (BMDBM) and enzacamene (4-MBC). Summed concentrations of the seven UV filters ranged from 7330 ng L-1 at 13:00 h to 2550 ng L-1 at 21:00 h. In the degradation experiment, four UV filters showed no significant change over time. The fate of these compounds in the environment is likely to be mainly influenced by dispersion. Half-lives of the remaining UV filters were 6.6 h for amiloxate (IMC), 20 h for benzophenone 1, 23 h for octinoxate (EHMC), 30 h for 3-benzylidene camphor, 34 h for 4-MBC and 140 h for dioxybenzone (BP8). The degree of susceptibility to photodegradation and biodegradation was generally consistent within a structural class. The fate and half-lives of UV filters are variable and should be considered on a per site basis when assessing environmental risk. The experimental process involved the reaction of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate(cas: 6197-30-4).Application In Synthesis of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate

The Article related to uv filter freshwater photodegradation biodegradation, degradation, environmental half-life, personal care products, sunscreen agents, Water: Water Purification (Including Treatment For Industrial Uses) and other aspects.Application In Synthesis of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On December 15, 2020, Ho, Wai-Kit; Law, Japhet Cheuk-Fung; Zhang, Tong; Leung, Kelvin Sze-Yin published an article.SDS of cas: 6197-30-4 The title of the article was Effects of Weathering on the Sorption Behavior and Toxicity of Polystyrene Microplastics in Multi-solute Systems. And the article contained the following:

Recent studies have demonstrated that weathering modifies the physicochem. properties and sorption behavior of microplastics (MPs). However, little is known about the effects of such weathering on the simultaneous sorption by MPs of different organic pollutants in multi-solute systems. In this study, the role of cosolute properties in the formation of solute multilayers with a hydrophobic primary solute (4-MBC) on pristine and various weathered polystyrene MPs (PSMPs) was examined Three weathered PSMPs were studied namely, UV-irradiated PS (UV-PS), microbially degraded PS (MD-NPS), and UV-irradiated PS with subsequent microbial degradation (MD-UV-PS). The weathered PSMPs generally exhibited higher degree of oxygenated functionalities with less surface hydrophobicity than pristine particles. Our findings showed that the formation of solute multilayers with hydrophobic cosolutes was drastically suppressed in UV-PS due to more severe competition at hydrophobic sorption sites. Nevertheless, hydrophilic cosolutes contributed to solute multilayer formation with 4-MBC on PSMPs after UV irradiation, probably due to the stronger sorption of hydrophilic compounds to the oxidized surfaces of these particles via enhanced H-bonding. Strikingly, the sorption of 4-MBC by MD-UV-PS was notably enhanced when hydrophobic cosolutes were present. The observed synergistic sorption indicates that adhered biofilms and/or organic matter on MD-UV-PS could sorb the hydrophobic cosolute mols., and eventually promote sorption of 4-MBC. Our further toxicity tests revealed that such solute multilayers formed on PSMPs inhibited microalgal growth. These results suggest that the fate and biol. effects of MP-mediated chem. exposure could be strongly affected by weathering processes and coexistence of multiple organic contaminants in natural environments. The experimental process involved the reaction of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate(cas: 6197-30-4).SDS of cas: 6197-30-4

The Article related to polystyrene microplastic weathering sorption multi solute system, algal toxicity, microplastic, multi-solute system, organic uv filter, sorption, weathering, Water: Water Purification (Including Treatment For Industrial Uses) and other aspects.SDS of cas: 6197-30-4

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On May 1, 2022, Cadena-Aizaga, M. Isabel; Montesdeoca-Esponda, Sarah; Sosa-Ferrera, Zoraida; Santana-Rodriguez, Jose Juan published an article.Formula: C24H27NO2 The title of the article was Occurrence and environmental hazard of organic UV filters in seawater and wastewater from Gran Canaria Island (Canary Islands, Spain). And the article contained the following:

Organic UV filters are used in personal care products, but they are also added to industrial products and are constantly released to the environment. This study analyses the occurrence of 8 widely used organic UV filters in seawater from three beaches on the Gran Canaria Island (Spain) and in three wastewater treatment plants (WWTPs) by taking samples from influents and effluents. It also discusses the target compounds’ post-treatment removal efficiencies. Sampling was carried out for 6 mo and analytes were extracted by solid phase extraction with Sep-pak C18 cartridges. They were determined by ultra-high performance liquid chromatog. coupled to mass spectrometry in tandem. The potential environmental hazard associated with the found concentrations was also assessed for marine organisms. Different target compounds were detected on the analyzed beaches and in the wastewater. Benzophenone-3 (BP3) was the most recurrent compound in the seawater samples (frequency detection of 83%) and also in wastewater influents and effluents (measured in all the samples). However, the highest concentrations for seawater (172μg L-1) and influent wastewater (208μg L-1) corresponded to octocrylene, while methylene bis-benzotriazolyltetramethylbutylphenol was the compound most concentrated in secondary treatment effluent (34.0μg L-1) and BP3 in tertiary treatment effluent (8.07μg L-1). All the analyzed samples showed that at least one target UV filter was present. Regarding the removal efficiencies of these compounds in the studied WWTPs, consistent differences between the target compounds were observed in influent concentration terms, where the average removal rates were higher than 50% for most of the compounds Conventional treatment is unable to completely remove many studied compounds, while tertiary treatment acts as an addnl. elimination for some of them. An environmental hazard quotient above 1 was found for octocrylene, benzophenone-3 and 4-methylbenzylidene camphor, which indicates a potential high hazard for living species if these compounds are present. The experimental process involved the reaction of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate(cas: 6197-30-4).Formula: C24H27NO2

The Article related to environmental hazard organic uv filters seawater wastewater, environmental hazard assessment, organic ultraviolet filters, seawater, solid phase extraction, wastewater, Water: Water Purification (Including Treatment For Industrial Uses) and other aspects.Formula: C24H27NO2

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Lotz, Florian; Gerbig, Stefanie; Lotze, Christian; Spengler, Bernhard; Schulz, Sabine published an article in 2020, the title of the article was Autarkic desorption electrospray ionization source for on-site analysis of consumer goods.Reference of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate And the article contains the following content:

A general-purpose desorption electrospray ionization (DESI) source is presented which is not bound to the laboratory site. It allows autarkic operation for a few hours and can be connected to different types of (autarkic or non-autarkic) mass spectrometers via an atm.-pressure interface. Tech. characteristics are described as well as results from direct surface anal. of consumer goods such as plastics, fruit peels or pills, or from living objects such as human skin, demonstrating the detection of various target compounds such as plasticizers, pesticides, drugs, or sun blockers. Quant. anal. is demonstrated for phthalates in plastics. The geometry of the sample, the sample table and the sprayer were modified and characterized for optimization of the method. The autarkic ion source has a total size of 48.4 × 27.0 × 18.0 cm (l x w x h) and a total mass of 7 kg. The source delivers 5.5 bar pressurized air and an adjustable solvent flow rate down to 1.5μl min-1 for the DESI sprayer. A rechargeable 25.6 V battery allows autarkic runtimes of more than 3.5 h. Source optimization and characterization was done on an orbital trapping mass spectrometer. Connected to a portable mass spectrometer, the developed device makes DESI suitable for on-site analyses in e.g. consumer protection, border control or homeland security. The experimental process involved the reaction of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate(cas: 6197-30-4).Reference of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate

The Article related to autarkic desorption electrospray ionization mass spectrometry consumer product drug, Apparatus and Plant Equipment: Instrumentation and Control Apparatus and other aspects.Reference of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On March 1, 2021, Fagervold, S. K.; Rohee, C.; Rodrigues, A. M. S.; Stien, D.; Lebaron, P. published an article.Electric Literature of 6197-30-4 The title of the article was Efficient degradation of the organic UV filter benzophenone-3 by Sphingomonas wittichii strain BP14P isolated from WWTP sludge. And the article contained the following:

Benzophenone-3 (BP3) is a widely used organic UV filter present in many environmental compartments. One way BP3 is released into the environment is through effluents from wastewater treatment plants (WWTPs). These plants are possible sources for degradation activity and WWTP sludge may potentially degrade BP3. Our goal was to identify any BP3 degrading microorganism(s) in WWTP sludge and to investigate whether the degradation was co-metabolic. Initial WWTP sludge microcosms spiked with BP3 showed 100% degradation after 20 days. Multiple transfers of these microcosms, while maintaining a strong selective pressure for BP3 degradation capabilities, resulted in the dominance of one bacterial strain. This strain was identified as Sphingomonas wittichii BP14P and was subsequently isolated. It was shown to degrade BP3 in a growth dependent manner. Strain BP14P utilized BP3 as the sole energy and carbon source and completely degraded BP3 after 7 days in minimal media. We tested the capability of BP14P to degrade nine other UV filters, but the degradation ability seemed to be restricted to BP3. However, whether this specificity is due to the lack of degradation genes, cellular transport or low bioavailability of the other UV filters remained unclear. The efficient degradation of BP3 by a group of bacteria well known for their potential for xenobiotic degradation is an important step forward for a complete risk assessment of the long-term environmental impact of BP3. The experimental process involved the reaction of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate(cas: 6197-30-4).Electric Literature of 6197-30-4

The Article related to benzophenone3 uv filter sphingomonas wittichii degradation wastewater treatment plant, bp3 degradation, growth-dependent, sphingomonas wittichii, sunscreens, Waste Treatment and Disposal: Biological Treatment Of Aqueous Wastes and other aspects.Electric Literature of 6197-30-4

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On October 20, 2020, Pegoraro, Cesar N.; Harner, Tom; Su, Ky; Ahrens, Lutz published an article.Safety of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate The title of the article was Occurrence and gas-particle partitioning of organic UV-filters in urban air. And the article contained the following:

A retrospective anal. of a comprehensive series of high-volume air samples (n = 70) collected during 2010-2011 in Toronto (Canada) was performed. Seven UV compounds were analyzed by gas chromatog.-tandem mass spectrometry (GC-MS/MS) with sum of concentrations (gas + particle phase) ranging from 80 to 2030 pg/m3. Homosalate (HMS) was the most prevalent organic UV-filter in air (47% of the total concentration), followed by 2-ethylhexyl salicylate (EHS, ~29%), E- and Z-2-ethylhexyl 4-methoxycinnamate (EHMC, ~17%). Ambient air (gas + particle phase) concentrations of organic UV-filters showed a strong seasonality, with peak levels during the summer. An anal. of Clausius-Clapeyron slopes indicated that much of the ambient burden of organic UV-filters are explained by volatilization from terrestrial and aquatic surfaces and supplemented with human activities and use of lotions and sunscreens, containing organic UV-filters, in addition to its use in plastics, textiles, paints, and pesticides. The results showed that organic UV-filters exist mainly in the gas phase with some exceptions, for instance, octocrylene (OCR), which was associated with both gas and particle phases, and avobenzone (AVB), which was predominantly in the particle phase. Lastly, this study revealed the need for basic phys. chem. property data for organic UV-filters, including information on transformation rates and products, for better evaluating their environmental fate and effects. The experimental process involved the reaction of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate(cas: 6197-30-4).Safety of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate

The Article related to occurrence gas particle partitioning organic uv filter urban air, Air Pollution and Industrial Hygiene: Air Pollutants and Air Pollution and other aspects.Safety of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On March 31, 2022, An, Di; Xing, Xiangyang; Tang, Zhenwu; Li, Yonghong; Sun, Jiazheng published an article.Computed Properties of 6197-30-4 The title of the article was Concentrations, distribution and potential health risks of organic ultraviolet absorbents in street dust from Tianjin, a megacity in northern China. And the article contained the following:

The distribution of organic UV absorbers (OUVAs) in outdoor dust remains poorly understood, especially in megacities. We measured the concentrations of 11 OUVAs in street dust from Tianjin, China, by a gas chromatog.-mass spectrometry, and found total concentrations in the range of 10.3-129 ng/g. These OUVAs were prevalent in the study street dust, but their concentrations were much lower than those in indoor dust reported in other areas previously. Benzophenone and octocrylene were the dominant OUVAs, representing medians of 15.5% and 13.1% of total OUVA concentrations, resp. Total concentrations of dust OUVAs in the industrial area were higher than the residential, cultural and new urban areas. Source assessment indicated that the OUVAs likely originated mainly from the manufacture and consumption of cosmetics and personal care products, and some may have been from the production and use of OUVA-containing consumer products. The calculated non-carcinogenic risks of OUVAs in street dust were low. Our results further confirmed that the OUVAs were prevalent in the environment, provide useful information for understanding potential risks of these chems. and developing risk management strategies. Further studies are needed to investigate the occurrence, environmental behaviors and potential risks of these emerging contaminants in outdoor environment. The experimental process involved the reaction of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate(cas: 6197-30-4).Computed Properties of 6197-30-4

The Article related to organic uv absorbent street dust health risk air pollution, distribution, health risks, organic ultraviolet absorbers (ouvas), sources, street dust, Air Pollution and Industrial Hygiene: Air Pollutants and Air Pollution and other aspects.Computed Properties of 6197-30-4

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics