Tag: 200-300

On December 31, 2021, Pack, Eun Chul; Lee, Kyung Youn; Jung, Jin Seop; Jang, Dae Yong; Kim, Hyung Soo; Koo, Ye Ji; Lee, Ho Geon; Kim, Young Soon; Lim, Kyung Min; Lee, Seung Ha; Choi, Dal Woong published an article.Application In Synthesis of 2,4-Di-tert-butylphenol The title of the article was Determination of the migration of plastic additives and non-intentionally added substances into food simulants and the assessment of health risks from convenience food packaging. And the article contained the following:

Convenience foods are currently popular among busy, modern consumers. However, the migration of plastics additives and non-intentionally added substances (NIAS) from packaging materials has raised concern about the potential health risks. The migration of nine compounds, including additives (butylated hydroxytoluene and 2,2,4-trimethyl-1,3-pentanediol diisobutyrate), and NIAS that originated from additives degradation products (phenol, 2-ethyl-1-hexanol, acetophenone, 4-propylbenzaldehyde, 2,6-di-tert-butylbenzoquinone, 2,4-di-tert-butylphenol, and methyl-3-(3,5-ditertbutyl-4-hydroxyphenyl)) from convenience food packaging was evaluated in migration tests employing food simulants under real-life consumption and worst-case scenario conditions. Their migration level in the food simulants was quantified by gas chromatog.-mass spectrometry. Most of the compounds had a low frequency of detection and the detected compounds varied depending on the individual samples, regardless of the packaging materials. The worst-case migration tests showed that repetitive microwave heating considerably accelerated the migration and degradation of the additives due to polymer swelling, although a single microwave heating had little effect on the migration. Risk assessment confirmed that the current level of exposure of Korean consumers to the substances from convenience food packaging is unlikely to pose a health risk, even in the worst-case scenario. The experimental process involved the reaction of 2,4-Di-tert-butylphenol(cas: 96-76-4).Application In Synthesis of 2,4-Di-tert-butylphenol

The Article related to plastic additive non intentionally added substance food packaging, Food and Feed Chemistry: Packaging, Preservation, and Processing and other aspects.Application In Synthesis of 2,4-Di-tert-butylphenol

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On September 1, 2022, Shibuya, Hiromasa; Suk Choi, Yeong; Choi, Taejin; Yun, Sungyoung; Moon, Juhee; Matsuo, Yutaka published an article.Quality Control of 2,4-Di-tert-butylphenol The title of the article was Synthesis of n-type [60]Fullerene Derivatives with Sterically Bulky tert-Butyl Groups for Vacuum Deposition Processes. And the article contained the following:

The thermal stability of [60]fullerene derivatives I (R1 = 4-fluorophenyl, 3,5-difluorophenyl; R2 = H, Me), II (R3 = H, t-Bu; R4 = H; R3R4 = -CH=CH-CH=CH-; R5 = H, Ph, t-Bu) with various bulky substituents for thermal evaporation under vacuum by means of thermogravimetric anal. under reduced and normal pressure was investigate. The sterically bulky groups such as tert-Bu groups of [60]fullerene derivatives I, and II lowered the vacuum deposition temp were founded. Also, isothermal thermogravimetric anal. was performed to examine the long-term thermal stability of the designed compounds under heating conditions. Furthermore, the UV-Vis absorption patterns of the deposited films were investigated. Absorption in the blue wavelength range, which was attributed to intermol. HOMO-LUMO transitions among the MOs of adjacent [60]fullerenes I and II was dramatically modified. These results were associated with the prevention of aggregation among neighboring [60]fullerene by the sterically bulky groups. This concept could contribute to expanding the use of evaporable [60]fullerene derivatives I and II in organic thin-film electronics research fields. The experimental process involved the reaction of 2,4-Di-tert-butylphenol(cas: 96-76-4).Quality Control of 2,4-Di-tert-butylphenol

The Article related to fullerene preparation sterically bulky tertbutyl group vacuum deposition process, fullerene, evaporable fullerene derivatives, organic electronics, organic photodiode, Heterocyclic Compounds (One Hetero Atom): Areno- and Diarenofurans and other aspects.Quality Control of 2,4-Di-tert-butylphenol

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On October 16, 2006, Kato, Keisuke; Matsuba, Chie; Kusakabe, Taichi; Takayama, Hiroyuki; Yamamura, Shigeo; Mochida, Tomoyuki; Akita, Hiroyuki; Peganova, Tat’yana A.; Vologdin, Nikolai V.; Gusev, Oleg V. published an article.Category: alcohols-buliding-blocks The title of the article was 2,2′-Isopropylidenebis[(4S,5R)-4,5-di(2-naphthyl)-2-oxazoline] ligand for asymmetric cyclization-carbonylation of meso-2-alkyl-2-propargylcyclohexane-1,3-diols. And the article contained the following:

The oxidative cyclization-carbonylation of meso-2-alkyl-2-propargylcyclohexane-1,3-diols I (R = Me, n-Pr, H2C:CHCH2) mediated by Pd(II) with chiral bisoxazoline (box ligand) afforded bicyclic β-alkoxyacrylates II. Based on a ligand screening, 2,2′-isopropylidenebis[(4S,5R)-4,5-di(2-naphthyl)-2-oxazoline] ligand has been developed. The products II with a chiral quaternary carbon were obtained in 71-100% yields with 85-95% ee. The experimental process involved the reaction of (R)-2-Amino-2-(4-(trifluoromethyl)phenyl)ethanol(cas: 306281-86-7).Category: alcohols-buliding-blocks

The Article related to benzofuran perhydro carboxymethylene asym synthesis, cyclohexanediol propargyl preparation enantioselective cyclization carbonylation oxazoline palladium catalyst, Heterocyclic Compounds (One Hetero Atom): Areno- and Diarenofurans and other aspects.Category: alcohols-buliding-blocks

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On March 15, 2022, Ren, Tianhang; Wang, Yan; Wu, Nan; Qing, Yan; Li, Xingong; Wu, Yiqiang; Liu, Ming published an article.Quality Control of 2,4-Di-tert-butylphenol The title of the article was Degradation of urea-formaldehyde resin residues by a hydrothermal oxidation method into recyclable small molecular organics. And the article contained the following:

Urea-formaldehyde (UF) resin residues and the related product wastes as organic hazardous wastes are difficult to be biodegraded or recycled. In this research, a hydrothermal oxidation method using hydrogen peroxide (H2O2) solution has been developed for the degradation and recycling of UF resin residues. The effects of solution concentration, temperature, and time on the degradation efficiency and products of UF resin residues were studied. Under optimal conditions, i.e., 140°C and 5 wt% H2O2 solution, over 75% of UF resin residues was degraded after 3 h. The degradation efficiency is much higher than that of the traditional hydrothermal treatment or acid hydrolysis method. In addition, results from Fourier transform IR spectroscopy (FTIR), gas chromatog.-mass spectroscopy (GC-MS), NMR spectroscopy (NMR), and X-ray diffraction (XRD) confirmed that H2O2 solution degrades UF resin residues to low mol. compounds, such as alcs., methylal, and amides. This research provides a novel and high-efficient hydrothermal oxidization process for the degradation of UF resin residues, which might be a promising environmentally friendly and low-cost method for the disposal and recycling of industrial UF resin residues. The experimental process involved the reaction of 2,4-Di-tert-butylphenol(cas: 96-76-4).Quality Control of 2,4-Di-tert-butylphenol

The Article related to urea formaldehyde resin hydrothermal oxidation wastewater treatment, harmless disposal, hazardous wastes, hydrogen peroxide, hydrothermal treatment, uf resin, Waste Treatment and Disposal: Chemical Treatment Of Aqueous Wastes and other aspects.Quality Control of 2,4-Di-tert-butylphenol

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On June 15, 2021, Yang, Fan; Xu, Zibo; Huang, Yuandong; Tsang, Daniel C. W.; Ok, Yong Sik; Zhao, Ling; Qiu, Hao; Xu, Xiaoyun; Cao, Xinde published an article.Quality Control of 2,4-Di-tert-butylphenol The title of the article was Stabilization of dissolvable biochar by soil minerals: Release reduction and organo-mineral complexes formation. And the article contained the following:

Biochar has two existing forms in the moist soil environment, free dissolvable biochar (particle size < 0.45μm) and undissolvable particles (particle size > 0.45μm). The release and decomposition of dissolvable biochar from bulk biochar particles is a primary C loss pathway in biochar-amended soils, which would be reduced by their interactions with soil minerals. Most previous studies focused on the effect of feedstock types and pyrolysis conditions on dissolvable biochar stability, while few studies researched the interaction between dissolvable biochar and soil components, for instance the soil minerals, and its effect on the stability of dissolvable biochar. In this study, bentonite and goethite were selected as model soil minerals because of their differences in structure and surface types: neg. charged 2:1 type phyllosilicate (bentonite) and pos. charged crystalline mineral (goethite). Dry-wet cycling was conducted to determine the effect of these two minerals on the release of dissolvable biochar from walnut shell-derived biochar particles. The stability of dissolvable biochar was measured by chem. oxidation and biodegradation Both soil minerals reduced the release of dissolvable biochar by over 34% with the presence of Ca2+. Mechanisms of “Ca2+ bridging”, “ligand exchange” and “van der Waals attraction” contributed to the formation of dissolvable biochar-bentonite complexes, and Ca2+ promoted dissolvable biochar inserting into bentonite interlayer space, expanding D-spacing from 1.25 nm to 1.55 nm. However, “Ca2+ bridging” barely formed on goethite because of charge repulsion, indicating that the dissolvable biochar was bound with goethite mainly by “van der Waals attraction” and “ligand exchange”. Due to organo-mineral complexes formation, the chem. oxidation extent of dissolvable biochar was reduced by 22.8-36.5%, and the biodegradation extent was reduced by 72.7-85.0%, since the soil minerals are more effective to prevent the dissolvable biochar from being biodegraded. This study proved soil minerals and Ca 2+ were beneficial for enhancing biochar stability, these observations assisted in assessing the biochar ability for long-term carbon sequestration. The experimental process involved the reaction of 2,4-Di-tert-butylphenol(cas: 96-76-4).Quality Control of 2,4-Di-tert-butylphenol

The Article related to biochar soil organo mineral complex reduction stabilization, bentonite, biochar stability, ca(2+) bridging, goethite, intercalated sorption, Waste Treatment and Disposal: Chemical Treatment Of Aqueous Wastes and other aspects.Quality Control of 2,4-Di-tert-butylphenol

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On January 1, 2022, Montesantos, Nikolaos; Fini, Mahdi Nikbakht; Muff, Jens; Maschietti, Marco published an article.SDS of cas: 4719-04-4 The title of the article was Proof of concept of hydrothermal oxidation for treatment of triazine-based spent and unspent H2S scavengers from offshore oil and gas production. And the article contained the following:

The feasibility of the hydrothermal oxidation of a wastewater derived from H2S scavenging operations, carried out in a topside offshore oil and gas installation, was demonstrated. The feed characterization showed the presence of mainly unreacted triazine (unspent scavenger), monoethanolamine and dithiazine (spent scavengers). The spent and unspent scavengers (SUS) were subjected to hydrothermal oxidation in a batch reactor at approx. 200°C (low temperature, LT) and 350°C (high temperature, HT), using oxygen in excess. The experiments were performed for six reaction times at each temperature, in the range 3 to 360 min at LT and 1 to 120 min at HT. Diluted SUS (COD around 30 g/kg) was used as reactor feed. The three main compounds of the SUS were not found in any of the oxidation products, which means they are fast converted. COD reductions up to 84% and 98% were obtained at LT and HT, resp. A rate equation of second order with respect to the COD was found suitable to represent the rate of disappearance of COD, with the rate constant at HT approx. 70 times higher than at LT. The extensive anal. carried out on the reaction products showed the presence of C1-C4 carboxylic acids, pyridines and pyrazines as intermediate oxidation products. A clear trend towards complete mineralization of organic nitrogen to ammonium, except for small amounts of nitrate at LT, and of organic sulfur towards sulfate, was observed The experimental process involved the reaction of 2,2′,2”-(1,3,5-Triazinane-1,3,5-triyl)triethanol(cas: 4719-04-4).SDS of cas: 4719-04-4

The Article related to triazine spent hydrogen sulfide scavenger hydrothermal oxidation wastewater treatment, Waste Treatment and Disposal: Chemical Treatment Of Aqueous Wastes and other aspects.SDS of cas: 4719-04-4

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On June 9, 2021, Jiang, Peng; Li, Xue-Wen; Wang, Jin-An; Zhou, Xiao-Long published an article.Name: 2,2′,2”-(1,3,5-Triazinane-1,3,5-triyl)triethanol The title of the article was Kinetic and mechanism studies on the photodegradation of cold-rolling emulsion wastewater by the UV/H2O2 process. And the article contained the following:

The UV/H2O2 process was employed to purify cold-rolling emulsion wastewater (CREW). The degradation of CREW was mainly attributed to the combined UV/H2O2 process and exhibited pseudo-first-order reaction kinetics. The reaction parameters, including the H2O2 dosage, initial pollutant concentration, initial pH, UV intensity, and inorganic anions, were found to influence the removal efficiency of COD (COD) and reaction rates. In addition, the optimal exptl. conditions were determined: H2O2 dosage of 0.2 mol/L, initial pH of 9.13, and UV intensity of 4.0 mW/cm2. The final residual COD concentration decreased from 3573 mg O2/L to 67 mg O2/L, and the treated wastewater complies with the wastewater discharge standards in China (COD concentration of 80 mg O2/L) and can be discharged. Meanwhile, •OH was identified as the primary reactive radical in the process. Sodium dodecyl sulfonate (SDS) and hexahydro-1,3,5-tris(hydroxyethyl)-s-triazine (BK) were selected as representative pollutants in CREW to explore the degradation mechanism. The products generated were identified by liquid chromatog.-mass spectrometry (LC-MS) and gas chromatog.-mass spectrometry (GC-MS). Potential degradation pathways were proposed and discussed. The operational cost is 0.115 USD/L, which was calculated for the best conditions. The experimental process involved the reaction of 2,2′,2”-(1,3,5-Triazinane-1,3,5-triyl)triethanol(cas: 4719-04-4).Name: 2,2′,2”-(1,3,5-Triazinane-1,3,5-triyl)triethanol

The Article related to kinetics photodegradation cold rolling emulsion wastewater uv hydrogen peroxide, Waste Treatment and Disposal: Chemical Treatment Of Aqueous Wastes and other aspects.Name: 2,2′,2”-(1,3,5-Triazinane-1,3,5-triyl)triethanol

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On May 31, 2011, Frenzel, Elrike; Schmidt, Stefan; Niederweis, Michael; Steinhauer, Katrin published an article.COA of Formula: C9H21N3O3 The title of the article was Importance of porins for biocide efficacy against Mycobacterium smegmatis. And the article contained the following:

Mycobacteria are among the microorganisms least susceptible to biocides but cause devastating diseases, such as tuberculosis, and increasingly opportunistic infections. The exceptional resistance of mycobacteria to toxic solutes is due to an unusual outer membrane, which acts as an efficient permeability barrier, in synergy with other resistance mechanisms. Porins are channel-forming proteins in the outer membrane of mycobacteria. The authors used the alamarBlue assay to show that the deletion of Msp porins in isogenic mutants increased the resistance of Mycobacterium smegmatis to isothiazolinones (methylchloroisothiazolinone [MCI]/methylisothiazolinone [MI] and octylisothiazolinone [2-n-octyl-4-isothiazolin-3-one; OIT]), formaldehyde-releasing biocides {hexahydrotriazine [1,3,5-tris (2-hydroxyethyl)-hexahydrotriazine; HHT] and methylenbisoxazolidine [N,N’-methylene-bis-5-(methyloxazolidine); MBO]}, and the lipophilic biocides polyhexamethylene biguanide and octenidine dihydrochloride 2- to 16-fold. Furthermore, the susceptibility of the porin triple mutant against a complex disinfectant was decreased 8-fold compared to wild-type (wt) M. smegmatis. Efficacy testing in the quant. suspension test EN 14348 revealed 100-fold improved survival of the porin mutant in the presence of this biocide. These findings underline the importance of porins for the susceptibility of M. smegmatis to biocides. The experimental process involved the reaction of 2,2′,2”-(1,3,5-Triazinane-1,3,5-triyl)triethanol(cas: 4719-04-4).COA of Formula: C9H21N3O3

The Article related to drug sensitivity mycobacterium porin, Microbial, Algal, and Fungal Biochemistry: Antimicrobial Sensitivity and other aspects.COA of Formula: C9H21N3O3

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On March 31, 2008, Selvaraju, Suresh B.; Khan, Izhar U. H.; Yadav, Jagjit S. published an article.Recommanded Product: 2,2′,2”-(1,3,5-Triazinane-1,3,5-triyl)triethanol The title of the article was Differential biocide susceptibility of the multiple genotypes of Mycobacterium immunogenum. And the article contained the following:

The non-tuberculous mycobacterium Mycobacterium immunogenum colonizes industrial metalworking fluids (MWFs) presumably due to its relative resistance to the currently practiced biocides and has been implicated in occupational respiratory hazards, particularly hypersensitivity pneumonitis. With an aim to understand its inherent biocide susceptibility profile and survival potential in MWF, five different genotypes of this organism, including a reference genotype (700506) and four novel test genotypes (MJY-3, MJY-4, MJY-10 and MJY-12) isolated in our recent study from diverse MWF operations were evaluated. For this, two com. biocide formulations, Grotan (Hexahydro-1,3,5-tris(2-hydroxyethyl)-s-triazine) and Kathon (5-chloro-2-methyl-4-isothiazolin-3-one) currently practiced for the control of microorganisms, including mycobacteria, in MWF operations were tested. Effect of the fluid matrix on the biocide susceptibility was investigated for the synthetic (S) and semi-synthetic (SS) MWF matrixes. In general, the min. inhibitory concentration values were higher for the HCHO-releasing biocide Grotan than the isothiazolone biocide Kathon. All genotypes (except the reference genotype) showed lower susceptibility in SS as compared to S fluid matrix for Grotan. However, in case of Kathon, a greater susceptibility was observed in SS fluid for majority of the test genotypes (MJY-3, 4 and 10). The test genotypes were more resistant than the reference genotype to either biocide in both fluid types. Furthermore, the individual genotypes showed differential biocidal susceptibility, with MJY-10 being the most resistant. These observations emphasize the importance of using the resistant genotypes of M. immunogenum as the test strains for formulation or development and evaluation of existing and novel biocides, for industrial applications. The experimental process involved the reaction of 2,2′,2”-(1,3,5-Triazinane-1,3,5-triyl)triethanol(cas: 4719-04-4).Recommanded Product: 2,2′,2”-(1,3,5-Triazinane-1,3,5-triyl)triethanol

The Article related to bactericide mycobacterium genotype, Microbial, Algal, and Fungal Biochemistry: Antimicrobial Sensitivity and other aspects.Recommanded Product: 2,2′,2”-(1,3,5-Triazinane-1,3,5-triyl)triethanol

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On November 3, 2021, Romero, Iveth; Kucheryavskiy, Sergey; Maschietti, Marco published an article.COA of Formula: C9H21N3O3 The title of the article was Experimental Study of the Aqueous Phase Reaction of Hydrogen Sulfide with MEA-Triazine Using In Situ Raman Spectroscopy. And the article contained the following:

A method for quantitation of bisulfide in the aqueous phase reactions of H2S scavenging with MEA-triazine is proposed. The method is based on time-resolved in situ Raman spectroscopy, thus allowing in situ monitoring of the reactions. The method is applied to obtain the kinetic data of the reactions in batch configuration at room temperature for initial pH values of 9, 10, and 11 and MEA-triazine/bisulfide initial concentration ratios in the range of 0.5-10. The pH increases remarkably during the reactions, causing a substantial decrease in the rate of disappearance of bisulfide. If the system is reacidified, complete depletion of bisulfide can be achieved, evidencing the irreversibility of the scavenging reactions. The results are also supported by a qual. anal. of the trends of the characteristic Raman peaks of MEA-triazine, dithiazine, and monoethanolamine. These trends are in line with the currently accepted reaction scheme, consisting of two scavenging reactions in series. The experimental process involved the reaction of 2,2′,2”-(1,3,5-Triazinane-1,3,5-triyl)triethanol(cas: 4719-04-4).COA of Formula: C9H21N3O3

The Article related to hydrogen sulfide trishydroxyethylhexahydrotriazine mea triazine aqueous reaction kinetics, in situ raman spectroscopy, Physical Organic Chemistry: Other Reactions, Processes, and Spectra and other aspects.COA of Formula: C9H21N3O3

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