Category: 140-66-9

Category: alcohols-buliding-blocks《Development of β-cyclodextrin crosslinked citric acid encapsulated in polypropylene membrane protected-μ-solid-phase extraction device for enhancing the separation and preconcentration of endocrine disruptor compounds》 was published in 2022. The authors were Hafiz Rozaini, Muhammad Nur’;Saad, Bahruddin;Lim, Jun Wei;Yahaya, Noorfatimah;Ramachandran, Muggundha Raoov;Kiatkittipong, Worapon;Mohamad, Mardawani;Chan, Yi Jing;Goh, Pei Sean;Shaharun, Maizatul Shima, and the article was included in《Chemosphere》. The author mentioned the following in the article:

Endocrine disruptor compounds (EDCs) such as plasticisers, surfactants, pharmaceutical products, personal care products and pesticides are frequently released into the environmental waters. Therefore, a sensitive and environmentally friendly method is entailed to quantify these compounds at their trace level concentrations This study encapsulated the β-cyclodextrin crosslinked with citric acid in a polypropylene membrane protected-μ-solid phase extraction (BCD-CA μ-SPE) device for preconcg. the EDCs (triclosan, triclocarban, 2-phenylphenol, 4-tert-octylphenols and bisphenol A) in real water samples before the anal. by high-performance liquid chromatog. FT-IR and TGA results indicated that BCD-CA was successfully synthesized with the formation of ester linkage (1078.33 cm^-1) and O-H stretching from carboxylic acid (3434.70 cm^-1) with higher thermal stability as compared with native CD with the remaining weight above 72.1% at 500°C. Several critical parameters such as the sorbent loading, type and amount of salts, extraction time, sample volume, sample pH, type and volume of desorption solvents and desorption time were sequentially optimized and statistically validated. Under the optimum condition, the use of BCD-CA μ-SPE device had manifested good linearity (0.5-500μg L^-1) with the determination of the coefficient range of 0.9807-0.9979. The p-values for the F-test and t-test (6.60 x 10^-8 – 1.77 x 10^-5) were lesser than 0.05 and low detection limits ranging from 0.27 to 0.84μg L^-1 for all studied EDCs. The developed technique was also successfully applied for EDC analyses in four distinct real water samples, namely, wastewater, river water, tap water and mineral water, with good EDCs recoveries (80.2%-99.9%), low relative standard deviations (0.1%-3.8%, n = 3) with enrichment factor ranging from 9 to 82 folds. These results signified the potential of the BCD-CA μ-SPE device as an efficient, sensitive, and environmentally friendly approach for analyzing EDCs. And 4-tert-Octylphenol (cas: 140-66-9) was used in the research process.

4-tert-Octylphenol(cas: 140-66-9) is a common environmental pollutant showing weak estrogenic effects.Category: alcohols-buliding-blocks It has been shown to cause harm to vertebrate male reproductive systems.

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Synthetic Route of C14H22O《Occurrence and Fate of Triclosan and Triclocarban in Selected Wastewater Systems across Durban Metropolis, KwaZulu-Natal, South Africa》 was published in 2022. The authors were Bakare, Babatunde Femi;Adeyinka, Gbadebo Clement, and the article was included in《International Journal of Environmental Research and Public Health》. The author mentioned the following in the article:

Triclosan (TCS) and triclocarban (TCC) are antimicrobial agents that have been used in personal care and consumer products in the past decades. In this study, influent, effluent, and sludge samples collected in selected wastewater treatment plants across the Durban metropolis were qual. and quant. investigated. It was revealed that the concentration of TCS ranged from 1.906 to 73.462μg/L, from 1.732 to 6.980μg/L, and from 0.138 to 2.455μg/kg in influent, effluent, and sludge samples, resp. The concentrations of TCC were found to be between 0.320 and 45.261μg/L, <LOQ-1.103μg/L, and from 0.107 to 8.827μg/kg in the influent, effluent, and sludge samples, resp. Higher concentrations of TCS as compared with TCC were observed in the aqueous samples. However, the concentrations of TCC in the sludge samples were significantly higher than the level of TCS. More water solubility of TCS could be responsible for the observed trend in the influent and effluent samples, while the trend observed in the sludge could be due to the more hydrophobicity character of TCC. The results of this study indicated that substantial amounts of TCS and TCC are been removed during the treatment process which could be a major reason for the decline in the levels recorded in the effluent samples, therefore, reducing the amount of the TCS and TCC that would eventually end up in the surface rivers. Qual. analyses of the samples indicated the presence of caffeine, tert-butylhydroquinone, chloroxylenol, phenol, 4-(1,1,3,3-tetra-Me butyl), and dimethyl-bisphenol A. Further investigative ecol. risk assessment studies are crucial due to the potential threat the contaminants may pose to aquatic lives and humans. And 4-tert-Octylphenol (cas: 140-66-9) was used in the research process.

4-tert-Octylphenol(cas: 140-66-9) has been used as a reference standard for the determination of the analyte in water samples using ultra-high-performance liquid chromatography/tandem mass spectrometry (UHPLC/MS/MS).Synthetic Route of C14H22O

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Ruzickova, Jana;Raclavska, Helena;Safar, Michal;Kucbel, Marek;Svedova, Barbora;Raclavsky, Konstantin;Juchelkova, Dagmar;Scala, Fabrizio;Kantor, Pavel published 《Environmental risks related to organic compounds from the combustion of paper briquettes in domestic boilers》 in 2021. The article was appeared in 《Journal of Hazardous Materials》. They have made some progress in their research.SDS of cas: 140-66-9 The article mentions the following:

Environmental risks connected with the combustion of paper/cardboard briquettes are still not sufficiently known. This paper aims to bring attention to the risks related to the utilization of paper briquettes in local boilers and to characterize these risks by means of the identification of organic compounds in deposits from exhaust flues. The identification of the chem. compounds was performed by pyrolysis gas chromatog. with mass spectrometric detection. Paper/cardboard briquettes contain 119 compounds of biogenic origin derived from major biomass components and 53 additives. Additives are used both for improving the properties of paper and in printing inks. By burning the paper briquettes, the same 53 compounds from the additive group were caught in the deposits from the flue gas pathway, occurring in the range of 1-10% of the concentration of individual compounds (additives) contained in the input fuel. Compounds that are very stable during the combustion process have an enrichment factor (EF) > 30, which corresponded to approx. 3% of the additive capture in deposits. The highest values were found for plasticisers (phthalates). Many of the primary organic compounds contained in the input raw material do not decompose during combustion and can have adverse effects on human health. The experimental procedure involved many compounds, such as 4-tert-Octylphenol (cas: 140-66-9) .

4-tert-Octylphenol(cas: 140-66-9) has been used as a reference standard for the determination of the analyte in water samples using ultra-high-performance liquid chromatography/tandem mass spectrometry (UHPLC/MS/MS).SDS of cas: 140-66-9

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Kawashima, Yukio;Onishi, Yuta;Tatarazako, Norihisa;Yamamoto, Hirotaka;Koshio, Masaaki;Oka, Tomohiro;Horie, Yoshifumi;Watanabe, Haruna;Nakamoto, Takashi;Yamamoto, Jun;Ishikawa, Hidenori;Sato, Tomomi;Yamazaki, Kunihiko;Iguchi, Taisen published 《Summary of 17 chemicals evaluated by OECD TG229 using Japanese Medaka, Oryzias latipes in EXTEND 2016》 in 2022. The article was appeared in 《Journal of Applied Toxicology》. They have made some progress in their research.Computed Properties of C14H22O The article mentions the following:

In June 2016, the Ministry of the Environment of Japan announced a program ”EXTEND2016” on the implementation of testing and assessment for endocrine active chems., consisting of a two-tiered strategy. The aim of the Tier 1 screening and the Tier 2 testing is to identify the impacts on the endocrine system and to characterize the adverse effects to aquatic animals by endocrine disrupting chems. detected in the aquatic environment in Japan. For the consistent assessment of the effects on reproduction associated with estrogenic, anti-estrogenic, androgenic, and/or anti-androgenic activities of chems. throughout Tier 1 screening to Tier 2 testing, a unified test species, Japanese medaka (Oryzias latipes), has been used. For Tier 1 screening, the in vivo Fish Short-Term Reproduction Assay (OECD test guideline Number 229) was conducted for 17 chems. that were nominated based on the results of environmental monitoring, existing knowledge obtained from a literature survey, and pos. results in reporter gene assays using the estrogen receptor of Japanese medaka. In the 17 assays using Japanese medaka, adverse effects on reproduction (i.e., reduction in fecundity and/or fertility) were suggested for 10 chems., and a significant increase of hepatic vitellogenin in males, indicating estrogenic (estrogen receptor agonistic) potency, was found for eight chems. at the concentrations in which no overt toxicity was observed Based on these results, and the frequency and the concentrations detected in the Japanese environment, estrone, 4-nonylphenol (branched isomers), 4-tert-octylphenol, tri-Ph phosphate, and bisphenol A were considered as high priority candidate substances for the Tier 2 testing. And 4-tert-Octylphenol (cas: 140-66-9) was used in the research process.

4-tert-Octylphenol(cas: 140-66-9) is a common environmental pollutant showing weak estrogenic effects.Computed Properties of C14H22O It has been shown to cause harm to vertebrate male reproductive systems.

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HPLC of Formula: 140-66-9《Supramolecular confinement and photoluminescence enhancements of a conjugated polymer by hydrogen bonding in solid films》 was published in 2022. The authors were Liu, Yen-Hui;Huang, Cheng-Chung;Cheng, Chih-Chia;Yang, Arnold C.-M., and the article was included in《Materials Chemistry and Physics》. The author mentioned the following in the article:

Massive photoluminescence (PL) enhancements and blue shifts in solid films of a conjugated polymer (CP) were observed when supramol. confinement took effect under intermol. hydrogen bonding (HB) stabilized via paired diluent interactions. By blending a HB donor diluent of 4-octylphenol into poly [2-(thiophen-3-yl)-Et acetate], a CP with HB acceptor side-groups, the PL emissions and blue shift surged at a threshold diluent fraction (ϕd) corresponding to ~0.5 diluent mol. per CP monomers, attributed to mol. confinement by the hydrogen bonding. The confinement culminated, with the PL enhancements and blue shift achieving ~12 folds and ~40 nm resp., at ϕd ~1.5 diluent per monomer when almost all CP side-groups had formed supramol. bonding; thereafter it plateaued as the excess diluent precipitated into crystalline 2nd phase. It is inferred that restriction of CP motions under supramol. confinements can rigidify the backbones to lead to reduced self-trapping and enhanced PL, while at the same time the incurred modification of chain conformations disrupts conjugation lengths and gives rise to large blue shifts. To complete the study, the researchers used 4-tert-Octylphenol (cas: 140-66-9) .

4-tert-Octylphenol(cas: 140-66-9) is a common environmental pollutant showing weak estrogenic effects.HPLC of Formula: 140-66-9 It has been shown to cause harm to vertebrate male reproductive systems.

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Recommanded Product: 4-tert-OctylphenolIn 2021, Tang, Shuqin;Chen, Yukun;Song, Guixian;Liu, Xiaotu;Shi, Yumeng;Xie, Qitong;Chen, Da published 《A Cocktail of Industrial Chemicals in Lipstick and Nail Polish: Profiles and Health Implications》. 《Environmental Science & Technology Letters》published the findings. The article contains the following contents:

Beauty products contain various industrial chems. to increase their functionality and appearance. The frequent use of beauty products may increase human exposure to industrial chems., but to date, their chem. components remain poorly characterized. Our work characterized the chem. components in lipstick and nail polish by screening for a total of 231 chems. from seven categories, including organophosphate esters (OPEs), phthalate esters (PAEs), non-PAE plasticizers, bisphenol analogs, parabens, UV stabilizers, and antioxidants. Their total concentrations ranged from 38.9 to 3810 μg/g (median of 193 μg/g) and from 18.6 to 1910 μg/g (307 μg/g) in lipstick (n = 34) and nail polish (n = 15), resp. The chem. compositions differed between lipstick and nail polish, but non-PAE plasticizers generally dominated over other groups of chems. A number of emerging plasticizers, OPEs, and UV stabilizers have rarely been reported in personal care products or environmental samples but were found at very high levels in beauty products, raising concern about their environmental release and human exposure risk. Although the employment of a hazard quotient approach suggested low health risks for exposure to industrial chems. from the use of beauty products, potential mixture effects from the chem. cocktail and occupational exposure to beauty products should not be overlooked. The experimental procedure involved many compounds, such as 4-tert-Octylphenol (cas: 140-66-9) .

4-tert-Octylphenol(cas: 140-66-9) is a common environmental pollutant showing weak estrogenic effects.Recommanded Product: 4-tert-Octylphenol It has been shown to cause harm to vertebrate male reproductive systems.

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Today I want to share an article with you. The article is 《Performance evaluation of ceramic membrane bioreactor: effect of operational parameters on micropollutant removal and membrane fouling》,you can find this article in 《Environmental Science and Pollution Research》. The following contents are mentioned:

This paper presents the removal of nine potential endocrine disruptors including pesticides, pharmaceuticals and industrial chems. using a submerged membrane bioreactor (MBR) system. Two lab-scale submerged MBRs having ceramic membranes were operated at three different sludge retention times (SRT: 15, 45, 90 days) and two hydraulic retention times (HRT: 12, 6 h) and the effects of SRT and HRT on both micropollutant removal and membrane fouling were investigated. While the effect of SRT and HRT change was observed on the removal of atrazine, fluoxetine, penconazole, no significant change was detected for the other micropollutants studied. It was determined that physicochem. properties such as distribution coefficient (LogD) and hydrophobicity of micropollutants are also effective on the removal efficiency of micropollutants. High removal efficiencies (≥ 97.5%) were observed for hydrophobic pollutants (logD > 3.2) except for penconazole (72.1%) and for hydrophilic pollutants (logD < 3.2) except for atrazine (42.5%). Membrane fouling was significantly affected by different operational parameters applied, with the slowest fouling occurring at 45 days of SRT and 12 h of HRT. However, micropollutant addition did not have a significant effect on membrane fouling. It has been shown that the simultaneous and effective treatment performance for micropollutants makes the membrane bioreactor system a promising wastewater treatment process. To complete the study, the researchers used 4-tert-Octylphenol (cas: 140-66-9) .

4-tert-Octylphenol(cas: 140-66-9) is a common environmental pollutant showing weak estrogenic effects.Application In Synthesis of 4-tert-Octylphenol It has been shown to cause harm to vertebrate male reproductive systems.

Reference:
Alcohol – Wikipedia,
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Today I want to share an article with you. The article is 《Performance evaluation of ceramic membrane bioreactor: effect of operational parameters on micropollutant removal and membrane fouling》,you can find this article in 《Environmental Science and Pollution Research》. The following contents are mentioned:

This paper presents the removal of nine potential endocrine disruptors including pesticides, pharmaceuticals and industrial chems. using a submerged membrane bioreactor (MBR) system. Two lab-scale submerged MBRs having ceramic membranes were operated at three different sludge retention times (SRT: 15, 45, 90 days) and two hydraulic retention times (HRT: 12, 6 h) and the effects of SRT and HRT on both micropollutant removal and membrane fouling were investigated. While the effect of SRT and HRT change was observed on the removal of atrazine, fluoxetine, penconazole, no significant change was detected for the other micropollutants studied. It was determined that physicochem. properties such as distribution coefficient (LogD) and hydrophobicity of micropollutants are also effective on the removal efficiency of micropollutants. High removal efficiencies (≥ 97.5%) were observed for hydrophobic pollutants (logD > 3.2) except for penconazole (72.1%) and for hydrophilic pollutants (logD < 3.2) except for atrazine (42.5%). Membrane fouling was significantly affected by different operational parameters applied, with the slowest fouling occurring at 45 days of SRT and 12 h of HRT. However, micropollutant addition did not have a significant effect on membrane fouling. It has been shown that the simultaneous and effective treatment performance for micropollutants makes the membrane bioreactor system a promising wastewater treatment process. To complete the study, the researchers used 4-tert-Octylphenol (cas: 140-66-9) .

4-tert-Octylphenol(cas: 140-66-9) is a common environmental pollutant showing weak estrogenic effects.Application In Synthesis of 4-tert-Octylphenol It has been shown to cause harm to vertebrate male reproductive systems.

Reference:
Alcohol – Wikipedia,
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Giamaki, Despoina;Dindini, Konstantina;Samanidou, Victoria F.;Touraki, Maria published 《Simultaneous Quantification of Bisphenol-A and 4-Tert-Octylphenol in the Live Aquaculture Feed Artemia franciscana and in Its Culture Medium Using HPLC-DAD》 in 2022. The article was appeared in 《Methods and Protocols》. They have made some progress in their research.COA of Formula: C14H22O The article mentions the following:

Aquaculture, a mass supplier of seafood, relies on plastic materials that may contain the endocrine disruptors bisphenol-A (BPA) and tert-octylphenol (t-OCT). These pollutants present toxicity to Artemia, the live aquaculture feed, and are transferred through it to the larval stages of the cultured organisms. The purpose of this work is the development and validation of an anal. method to determine BPA and t-OCT in Artemia and their culture medium, using n-octylphenol as the internal standard Extraction of the samples was performed with H2O/TFA (0.08%)-methanol (3:1), followed by SPE. Anal. was performed in a Nucleosil column with mobile phases A (95:5, volume/volume, 0.1% TFA in H2O:CH3CN) and B (5:95, volume/volume, 0.08% TFA in H2O:CH3CN). Calibration curves were constructed in the range of concentrations expected following a 24 h administration of BPA (10 μg/mL) or t-OCT (0.5 μg/mL), below their resp. LC50. At the end of exposure to the pollutants, their total levels appeared reduced by about 32% for BPA and 35% for t-OCT, and this reduction could not be accounted for by photodegradation (9-19%). The developed method was validated in terms of linearity, accuracy, and precision, demonstrating the uptake of BPA and t-OCT in Artemia. And 4-tert-Octylphenol (cas: 140-66-9) was used in the research process.

4-tert-Octylphenol(cas: 140-66-9) is a common environmental pollutant showing weak estrogenic effects.COA of Formula: C14H22O It has been shown to cause harm to vertebrate male reproductive systems.

Reference:
Alcohol – Wikipedia,
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Islam, Rafiquel;Melvin, Steven D.;Kit Yu, Richard Man;O’Connor, Wayne A.;Anh Tran, Thi Kim;Andrew-Priestley, Megan;Leusch, Frederic D. L.;MacFarlane, Geoff R. published 《Estrogenic mixtures induce alterations in lipidomic profiles in the gonads of female oysters》. The research results were published in《Chemosphere》 in 2022.Computed Properties of C14H22O The article conveys some information:

This study aimed to reveal possible alterations to lipidomic profiles in Sydney rock oysters, Saccostrea glomerata, exposed to estrogenic mixtures (i.e., estrone, E1; 17β-estradiol, E2; estriol, E3; 17α-ethinylestradiol, EE2; bisphenol A, BPA; 4-t-octylphenol, 4-t-OP; and 4-nonylphenol, 4-NP) at “low” and “high” concentrations, typical of those detected in Australian and global receiving waters. A seven-day acute exposure window exhibited significantly lower abundances of many non-polar metabolites in digestive gland, gills, and gonads. Overall, there was a strong effect of the carrier solvent ethanol (despite a low exposure of 0.0002%), with all solvent containing treatments exhibiting lower abundances of lipidic metabolites, especially in the gill and digestive gland. No significant changes of the lipidome were exhibited in the male gonad by estrogenic exposure. However, in the female gonad, significant reductions of phospholipids and phosphatidylcholine were associated with exposure to high estrogenic mixtures We hypothesise that the decreases in these phospholipids in the female gonad may be attributable to (1) lower algal consumption and thus lower uptake of lipidic building blocks; (2) a reduction of available substrates for phospholipid and phosphatidylcholine synthesis; and/or (3) induction of reactive oxygen species via estrogen metabolism, which may cause lipid peroxidation and lower abundance of phospholipids. The experimental procedure involved many compounds, such as 4-tert-Octylphenol (cas: 140-66-9) .

4-tert-Octylphenol(cas: 140-66-9) has been used as a reference standard for the determination of the analyte in water samples using ultra-high-performance liquid chromatography/tandem mass spectrometry (UHPLC/MS/MS).Computed Properties of C14H22O

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