Category: 6197-30-4

On February 1, 2022, Yang, Lyu; Zhong, Fuyong; Tang, Zhenwu; He, Ying; Han, Xue published an article.Product Details of 6197-30-4 The title of the article was Bioaccumulation and trophic transfer of organic ultraviolet absorbents in the food web of a freshwater lake: Implications for risk estimation. And the article contained the following:

Organic UV absorbents (UVAs) are increasingly reported in environmental matrixes and organisms. However, available information on the bioaccumulation of UVAs in freshwater species is insufficient and their trophodynamics in lake food webs remain unknown. We measured the concentrations of twelve UVAs in the wild species from Lake Chaohu. Except for UV-320 not detected, the other UVAs were prevalent in the study species and their total concentrations were in the range of 5.44-131 ng/g dry weight, which were comparable to the concentrations reported in other waters. Compound and species-specific accumulations of UVAs in the organisms were observed In the lake, the log-transformed concentrations of 4-Me benzylidene camphor, octyl p-dimethylaminobenzoate, UV-326, and UV-327 related significantly to the trophic levels of species sep. The calculated trophic magnification factors (TMFs) of the four UVAs were 3.79, implying trophic magnification, and 0.18, 0.40 and 0.58, suggesting trophic dilution, resp. These suggested that the magnification potential and the associated risks of individual UVAs in freshwater lake differed. To our knowledge, this is the first report of these TMFs in lake food webs. However, more investigation is needed to characterize their trophodynamic behaviors in lakes because food web characteristics likely affect trophic transfer of these chems. The experimental process involved the reaction of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate(cas: 6197-30-4).Product Details of 6197-30-4

The Article related to organic uv absorbent freshwater lake bioaccumulation behavior, aquatic species, bioaccumulation, freshwater lake, organic ultraviolet absorbents, trophodynamic behaviors, Water: Analysis and other aspects.Product Details of 6197-30-4

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

On June 30, 2020, Yan, Saihong; Liang, Mengmeng; Chen, Rui; Hong, Xiangsheng; Zha, Jinmiao published an article.Synthetic Route of 6197-30-4 The title of the article was Reproductive toxicity and estrogen activity in Japanese medaka (Oryzias latipes) exposed to environmentally relevant concentrations of octocrylene. And the article contained the following:

The growing use of octocrylene in sunscreens has posed a great threat to aquatic organisms. In the present study, to assess its reproductive toxicity and mechanism, paired Japanese medaka (Oryzias latipes) (F0) were exposed to OC at nominal concentrations of 5, 50, and 500μg/L for 28 d. Significant increases were observed in the gonadosomatic index and hepatosomatic index of F0 medaka at 500μg/L OC (p < 0.05) without significant differences in fecundity. Significant increases in the percent of mature oocytes were observed at 5 and 500μg/L OC, in which contrary to the percent of spermatozoa (p < 0.05). The plasma sex hormones and vitellogenin levels significantly increased in males at all treatments and in females at 50 and 500μg/L OC (p < 0.05). In addition, the levels of fshβ and lhβ in the brains and the levels of fshr, lhr and cyp17α in the gonads were significantly upregulated in males at all treatments (p < 0.05), in line with those of ar, erα, erβ and cyp19β in the brains of male and female. The upregulation of vtg in male and female livers was observed only at 500μg/L OC and upregulation of star and hsd3β was observed in testis at all treatments (p < 0.05). Continued exposure to OC significantly induced increases in the time to hatching, morphol. abnormality rates, and cumulative death rates of F1 embryos, inconsistent with body length of F1 larvae (p < 0.05). The experimental process involved the reaction of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate(cas: 6197-30-4).Synthetic Route of 6197-30-4

The Article related to oryzias reproductive toxicity estrogen octocrylene, embryonic development, endocrine disrupting, histopathology, japanese medaka (oryzias latipes), octocrylene, Toxicology: Other and other aspects.Synthetic Route of 6197-30-4

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

On October 31, 2020, Mille, Tiphaine; Soulier, Laurent; Caill-Milly, Nathalie; Cresson, Pierre; Morandeau, Gilles; Monperrus, Mathilde published an article.Application In Synthesis of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate The title of the article was Differential micropollutants bioaccumulation in European hake and their parasites Anisakis sp.. And the article contained the following:

Organisms are exposed to various stressors including parasites and micropollutants. Their combined effects are hard to predict. This study assessed the trophic relationship, micropollutants bioaccumulation and infection degree in a host-parasite couple. Carbon and nitrogen isotopic ratios were determined in hake Merluccius merluccius muscle and in its parasite Anisakis sp.. Concentrations of both priority (mercury species and polychlorinated biphenyls congeners) and emerging (musks and sunscreens) micropollutants were also measured for the parasite and its host, to detect potential transfer of contaminants between the two species. The results showed partial trophic interaction between the parasite and its host, in accordance with the Anisakis sp. life encysted in hake viscera cavity. PCB transfer between the two species may result from some lipids uptake by the parasite, while no relation occurred for the two other contaminants. Finally, a pos. correlation was found between the number of Anisakis sp. larvae and the methylmercury contamination for hake, emphasizing the assumption that the contamination level in methylmercury can weaken immune system of the host enough to affect parasite infection degree. 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 merluccius anisakis mercury polychlorinated biphenyl micropollutant bioaccumulation, emerging contaminants, mercury, nematode, pcb, parasite-host system, Toxicology: Other and other aspects.Application In Synthesis of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate

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

On January 1, 2020, Rodriguez-Escales, P.; Sanchez-Vila, X. published an article.COA of Formula: C24H27NO2 The title of the article was Modeling the fate of UV filters in subsurface: Co-metabolic degradation and the role of biomass in sorption processes. And the article contained the following:

UV filters (UVFs) are emerging organic compounds found in most water systems. They are constituents of personal care products, as well as industrial ones. The concentration of UVFs in the water bodies in space and time is mostly determined by degradation and sorption, both processes being determinant of their bioavailability and toxicity to ecosystems and humans. UVFs are a wide group of compounds, with different sorption behavior expected depending on the individual chem. properties (pKa,Koc,Kow). The goal of this work is framed in the context of improving our understanding of the sorption processes of UVFs occurring in the aquifer; i.e., to evaluate the role of biomass growth, solid organic matter (SOM) and redox conditions in the characterization of sorption of a set of UVFs. We constructed a conceptual and a numerical model to evaluate the fate of selected UV filters, focused on both sorption and degradation The models were validated with published data by Liu et al. (2013), consisting in a suite of batch experiments evaluating the fate of a cocktail of UVs under different redox conditions. The compounds evaluated included ionic UV filters (Benzophenone-3; 2-(3-t-butyl-2-hydroxy-5-methylphenyl)5-chloro-benzotriazole; 2-(2′-hydroxy-5′-octylphenyl)-benzotriazole) and neutral ones (octyl 4-methoxycinnamatte; and octocrylene). The experimental process involved the reaction of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate(cas: 6197-30-4).COA of Formula: C24H27NO2

The Article related to sorption filter metabolic degradation biomass growth solid organic matter, benzophenone, biomass, co-metabolic degradation, numerical modeling, sorption, uv filters, Water: Analysis and other aspects.COA of Formula: C24H27NO2

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

On June 15, 2022, Wang, Wenting; Lee, In-Seok; Oh, Jeong-Eun published an article.Recommanded Product: 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate The title of the article was Specific-accumulation and trophic transfer of UV filters and stabilizers in marine food web. And the article contained the following:

The occurrence and distribution of benzotriazole UV stabilizers (BUVs) and UV filters in marine environments (sediment and seawater) and 20 biota species in the South Korea were investigated to assess their transfer through the marine food web. The total concentrations in the seawater samples were 4.73-8.60 ng/L for BUVs and 1.20-4.88 ng/L for UV filters; while, the total concentrations in the sediment samples were 0.581-6.62 ng/g dw for BUVs and 1.05-6.79 ng/g dw for UV filters, resp. The total concentrations of BUVs and UV filters were a little higher in benthic invertebrates (BUVs: 131 ng/g lipid weight [lw], UV filters: 41.7 ng/g lw) than fish (BUVs: 99.2 ng/g lw, UV filters: 28.0 ng/g lw) but there were no statistical differences (Mann-Whitney U test, p > 0.05). UV-326 was dominant (fish: 37.9%, benthic invertebrate: 48.7%) of the total BUVs. While, benzophenone-3 (fish: 34.1%, benthic invertebrate: 40.8%) and ethylhexyl methoxy cinnamate (fish: 41.0%, benthic invertebrate: 37.8%) were the dominant UV filters. The bioaccumulation factor and trophic magnification factor indicated that UV-326 can both bioaccumulate and biomagnify (bioaccumulation factor >5000 and biota-sediment accumulation and trophic magnification factors >1). Several other BUVs were found to be able to either bioaccumulate (UV-320, UV-P, UV-329, and UV-234) or biomagnify (UV-327 and UV-928). Most of the analyzed UV filters were found not to be likely to bioaccumulate. The experimental process involved the reaction of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate(cas: 6197-30-4).Recommanded Product: 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate

The Article related to marine food web trophic transfer filter stabilizer, benzotriazole uv stabilizer, biomagnification, edi, marine environment, uv filter, Water: Water Pollution and other aspects.Recommanded Product: 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate

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

On November 15, 2021, Guo, Qiaorong; Wei, Dongbin; Wang, Feipeng; Chen, Miao; Du, Yuguo published an article.Formula: C24H27NO2 The title of the article was A novel risk score-based prioritization method for pollutants in reclaimed water. And the article contained the following:

Wastewater reclamation and reuse is a sustainable solution for alleviating the scarcity of water resources. However, the potential risks resulting from the residual pollutants in reclaimed water are of concern. Identifying of priority pollutants would be a practical approach for the management and scientific evaluation of risks associated with reclaimed water reuse. In this study, a novel risk score-based method is proposed for prioritizing residual pollutants in reclaimed water. First, target the specific applications and possible scenarios of reclaimed water as well as recognize the potential receptors and exposure pathways. Second, determine exposure and effect parameters, and assign values to every parameter. Third, calculate the total exposure score and effect score for each pollutant using a weighted method, then calculate the risk score by multiplying total exposure score and effect score, and rank all pollutants based on their risk scores from high to low. Fourth, recommend a priority pollutants list for reclaimed water reuse. To demonstrate the procedure and validate the method, a case study on groundwater recharge with reclaimed water was conducted. In the case study, EE2 and E2, which have also been listed in other recent water quality standards, were identified as priority pollutants. The case study illustrated sufficient reliability, great discrimination and feasibility of the method. The five exposure parameters and seven effect parameters in this method can objectively evaluate the potential risk of pollutants and identify priority pollutants for the specific application of reclaimed water. This application-oriented and risk-based prioritization method is easy to understand and simple to operate in practice. This study fills existing gaps by proffering a novel prioritization method to identify priority pollutants in reclaimed water for an accurate evaluation and safety management of recycled wastewater. The experimental process involved the reaction of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate(cas: 6197-30-4).Formula: C24H27NO2

The Article related to prioritization method bioaccumulation reclaimed water, adverse effect, exposure, priority pollutants, risk score, wastewater reclamation, Water: Water Pollution and other aspects.Formula: C24H27NO2

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

On August 1, 2022, Cadena-Aizaga, M. Isabel; Montesdeoca-Esponda, Sarah; Pino, Angelo Santana-Del; Sosa-Ferrera, Zoraida; Santana-Rodriguez, Jose Juan published an article.Synthetic Route of 6197-30-4 The title of the article was Assessment of anthropogenic pollution by UV filters using macrophytes as bioindicators. And the article contained the following:

Marine environment pollution has increased in recent decades as a result of anthropogenic activities. Macrophytes can assimilate the compounds dissolved in the water and respond to changes in surround conditions, for that, they can be used as bioindicators of pollution in aquatic environments. Currently organic UV filters have shown ever-increasing in pollution levels in marine ecosystems. The anthropogenic pollution produced by eight organic UV filters in coastal macrophytes was studied. A microwave-assisted extraction (MAE), followed by ultrahigh-performance liquid chromatog. with tandem mass spectrometry (UHPLC-MS/MS) was applied to 76 macrophyte (seaweeds and seagrass) samples from three different beaches on the Gran Canaria Island (Spain), collected for 6 mo. All studied UV filters were found with different detection frequencies from 16% to 100% in macrophyte samples. Octocrylene (OC) was detected in all the analyzed samples throughout the sampling period. The highest concentration, 19,369 ng·g-1 dry weight (dw), was for this compound in the seagrass Cymodocea nodosa. The bioconcentration ratio was determined for several seaweed groups (red, brown, green). Different bioconcentration grades were obtained. Those above 1000 indicated significant accumulation, which increases the possibility of chronic effects on seaweed and at upper tropic levels. The experimental process involved the reaction of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate(cas: 6197-30-4).Synthetic Route of 6197-30-4

The Article related to macrophyte bioindicator uv filter anthropogenic pollution, anthropogenic contamination, macrophytes, microwave-assisted extraction, organic uv filters, Water: Water Pollution and other aspects.Synthetic Route of 6197-30-4

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

On March 31, 2022, Downs, C. A.; Bishop, Elizabeth; Diaz-Cruz, M. Silvia; Haghshenas, S. Abbas; Stien, Didier; Rodrigues, Alice M. S.; Woodley, Cheryl M.; Sunyer-Caldu, Adria; Doust, Shadan Nasseri; Espero, William; Ward, Gene; Farhangmehr, Aref; Tabatabaee Samimi, S. Maryam; Risk, Michael J.; Lebaron, Philippe; DiNardo, Joseph C. published an article.Application In Synthesis of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate The title of the article was Oxybenzone contamination from sunscreen pollution and its ecological threat to Hanauma Bay, Oahu, Hawaii, U.S.A.. And the article contained the following:

Hanauma Bay is a 101-acre bay created by the partial collapse of a volcanic cone and once supported a vibrant coral reef system. It is the most popular swimming area in the Hawaiian Islands and has been reported to have averaged between 2.8 and 3.5 million visitors a year between the 1980s and the 2010s, with visitors averaging between 3000-4000 a day and peaking around 10,000-13,000 per day. Concentrations of oxybenzone and other common UV filters were measured in subsurface water samples and in sands from the beach-shower areas in Hanauma Bay. Results demonstrate that beach showers also can be a source of sunscreen environmental contamination. Hydrodynamic modeling indicates that oxybenzone contamination within Hanauma Bay’s waters could be retained between 14 and 50 h from a single release event period. Focusing on only oxybenzone, two different Hazard and Risk Assessment analyses were conducted to determine the danger of oxybenzone to Hanauma Bay’s coral reef system. Results indicate that oxybenzone contamination poses a significant threat to the wildlife of Hanauma Bay. To recover Hanauma Bay’s natural resources to a healthy condition and to satisfactorily conserve its coral reef and sea grass habitats, effective tourism management policies need to be implemented that mitigate the threat of sunscreen pollution. 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 oxybenzone contamination sunscreen pollution ecol threat hanauma bay, coral, hanauma bay, hydrodynamic modelling, oxybenzone, risk assessment, sunscreen, Water: Water Pollution and other aspects.Application In Synthesis of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate

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

On July 31, 2021, Santana-Viera, Sergio; Montesdeoca-Esponda, Sarah; Sosa-Ferrera, Zoraida; Santana-Rodriguez, Jose Juan published an article.Recommanded Product: 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate The title of the article was UV filters and UV stabilisers adsorbed in microplastic debris from beach sand. And the article contained the following:

Microplastics (MPs) in oceans adsorb different types of pollutants, which can neg. impact the food chain. The extensive use of personal care products (PCPs) has led to their ubiquitous environmental presence, and their partition between plastic matrixes and surroundings is determined by their physico-chem. characteristics and environmental conditions. This work develops and applies a methodol. to determine 12 UV filters (UVFs) and UV stabilizers (UVSs) in MPs collected in beach sand. The analyzes were carried out by ultrasound-assisted extraction and ultrahigh-performance liquid chromatog. with tandem mass spectrometry detection. The validated procedure was applied to MPs samples taken in sand samples from 13 beaches on the Canary Islands (Spain). The results showed the presence of 10 UV filters and UV stabilizers at concentrations between 1 and 4031 ng·g-1, where octocrylene was the most frequently found. The target analytes were present in all the sampling beaches. The experimental process involved the reaction of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate(cas: 6197-30-4).Recommanded Product: 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate

The Article related to uv filter stabilizer microplastic beach sand adsorption pollution vector, adsorption, beach sand, microplastics, pollution vector, uv filters and stabilisers, Water: Water Pollution and other aspects.Recommanded Product: 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate

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

On November 30, 2020, Juksu, Kanokthip; Liu, You-Sheng; Zhao, Jian-Liang; Yao, Li; Sarin, Charoon; Sreesai, Siranee; Klomjek, Pantip; Traitangwong, Atsadang; Ying, Guang-Guo published an article.COA of Formula: C24H27NO2 The title of the article was Emerging contaminants in aquatic environments and coastal waters affected by urban wastewater discharge in Thailand: An ecological risk perspective. And the article contained the following:

Emerging contaminants such as synthetic musks and UV-filters as ingredients personal care products were widely used in human daily life in Thailand. The occurrence and fate of four synthetic musks and nine UV-filters were investigated in eight full-scale sewage treatment plants (STPs) and their receiving aquatic environments in Bangkok and Pattaya, Thailand. All target compounds were detected in every single sample from STPs and surface water with magnitude from ng/L to μg/L. HHCB-lactone and HMS were found as the predominant musk and UV filter in influent and effluent of STPs, resp. HHCB-lactone was also found with the highest concentration up to 79501 ng/g (dw) in the sludge. Low removal efficiency range from -37% (HHCB-lactone) to 58% (AHTN) were found for four musks in the STPs. The total emission of Σ4musks and Σ9UV-filters were estimated to be up to 16.7 mg/person/day and 0.28 mg/person/day by the STPs. Three synthetic musks and seven UV-filters were detected in fish from the receiving river. Concentration and emission of musks and UV filters found in this study from Thailand were much higher than those reported in many other countries worldwide. The preliminary ecol. risk assessment showed that Musk xylene, 4-MBC and OC may pose high risk to aquatic organisms in the riverine and estuarine environment in Thailand. The experimental process involved the reaction of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate(cas: 6197-30-4).COA of Formula: C24H27NO2

The Article related to contaminant wastewater coastal water ecol risk assessment thailand, receiving environment, risk assessment, sewage treatment plant, synthetic musk, uv-filter, Water: Water Pollution and other aspects.COA of Formula: C24H27NO2

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