Category: 104-76-7

Ananiadou, Antonela; Papamokos, George; Steinhart, Martin; Floudas, George published the artcile< Effect of confinement on the dynamics of 1-propanol and other monohydroxy alcohols>, HPLC of Formula: 104-76-7, the main research area is monohydroxy alc dynamic confinement.

We report the effect of confinement on the dynamics of three monohydroxy alcs. (1-propanol, 2-ethyl-1-hexanol, and 4-methyl-3-heptanol) differing in their chem. structure and, consequently, in the dielec. strength of the “”Debye”” process. D. functional theory calculations in bulk 1-propanol identified both linear and ring-like associations composed of up to five repeat units. The simulation results revealed that the ring structures, with a low dipole moment (∼2 D), are energetically preferred over the linear assemblies with a dipole moment of 2.18 D per repeat unit. Under confinement in nanoporous alumina (in templates with pore diameters ranging from 400 to 20 nm), all dynamic processes were found to speed up irresp. of the mol. architecture. The characteristic freezing temperatures of the α and the Debye-like processes followed the pore size dependence: Ta,D = Tbulka,D – A/d1/2, where d is the pore diameter The characteristic “”freezing”” temperatures for the Debye-like (the slow process for confined 1-propanol is non-Debye) and the α-processes decrease, resp., by 6.5 and 13 K in confined 1-propanol, by 9.5 and 19 K in confined 2-ethyl-1-hexanol, and by 9 and 23 K in confined 4-methyl-3-heptanol within the same 25 nm pores. In 2-ethyl-1-hexanol, confinement reduced the number of linearly associated repeats from approx. heptamers in the bulk to dimers within 25 pores. In addition, the slower process in bulk 2-ethyl-1-hexanol and 4-methyl-3-heptanol, where the signal is dominated by ring-like supramol. assemblies, is clearly non-Debye. The results suggest that the effect of confinement is dominant in the latter assemblies. (c) 2021 American Institute of Physics.

Journal of Chemical Physics published new progress about Alcohols Role: PRP (Properties). 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, HPLC of Formula: 104-76-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Gawas, Sarita D.; Rathod, Virendra K. published the artcile< Ultrasound assisted green synthesis of 2-ethylhexyl stearate: a cosmetic bio-lubricant>, Computed Properties of 104-76-7, the main research area is 2-ethylhexyl stearate; bio-lubricant; cosmetics; lipase; ultrasound.

The 2-ethylhexyl stearate is used as a bio-lubricant in various cosmetic products. The present study is focused on the biocatalyzed esterification of 2-ethylhexanol and stearic acid to form 2-ethylhexyl stearate catalyzed by Fermase CALB 10000 in the presence of ultrasound treatment. The maximum conversion (95.87%) was obtained at molar ratio of 2-ethylhexanol to stearic acid 2:1, enzyme amount of 2 % (weight/weight), power 80 W, duty cycle 50 % and temperature 50°C in comparatively short reaction time (3 h) in the presence of Fermase as a catalyst. At optimum conditions, it is observed that in the presence of ultrasound; the reaction time minimizes up to 4 h as compared to mech. stirring method (7 h). The physiochem. properties for the 2-ethylhexyl palmitate were also evaluated.

Journal of Oleo Science published new progress about 104-76-7. 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, Computed Properties of 104-76-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Rahimi, Atyeh; Nojavan, Saeed published the artcile< Electromembrane extraction of verapamil and riluzole from urine and wastewater samples using a mixture of organic solvents as a supported liquid membrane: Study on electric current variations>, Name: 2-Ethylhexan-1-ol, the main research area is electromembrane extraction verapamil riluzole urine wastewater sample; organic solvent mixture supported liquid membrane elec current effect; electromembrane extraction; riluzole; urine; verapamil; wastewater.

The application of a mixture of organic solvents as a supported liquid membrane for improving the efficiency of the electromembrane extraction procedure was studied. The extraction process was followed by HPLC anal. of two model drugs (verapamil and riluzole). In this research, four organic solvents, including 1-heptanol, 1-octanol, 2-nitrophenyl octyl ether, and 2-Et hexanol, were selected as model solvents and different binary mixtures (volume/volume 2:1, 1:1 and 1:2) were used as the supported liquid membrane. The mixture of 2-Et hexanol and 1-otanol (volume/volume, 2:1) improved the extraction efficiency of model drugs by 1.5 to 12 times. Extraction efficiency is greatly influenced by the level of elec. current. For various mixtures of organic solvents, the elec. current fluctuated between 50 and 2500 μA, and the highest extraction efficiencies were obtained with low and stable elec. currents. Finally, the optimized extraction condition was validated and applied for the determination of model drugs in urine and wastewater samples.

Journal of Separation Science published new progress about Electric current. 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, Name: 2-Ethylhexan-1-ol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Chaintreau, Alain; Keller, Urs; Zellner, Barbara; Nguy, Kelly; Leocata, Sabine; Begnaud, Frederic published the artcile< From the representativeness of sampled odors to an olfactive camera>, SDS of cas: 104-76-7, the main research area is odor static trap headspace olfactive camera; aroma; fragrance; odor; olfactive camera; quantitation; representativeness; static-and-trapped headspace.

Although representativeness is often a prerequisite when sampling odors, the methods used have never been assessed from the anal. and sensory perspective simultaneously. We validate several critical innovations in the methods used to sample odors, starting with a previously developed static-and-trapped headspace (S&T-HS) cell, to minimize sorptive biases and allow for thermodesorption of trapped odors. The addition of a desorption oven allows for restoration and testing of odors sampled by not only S&T-HS but also other techniques (solid-phase microextraction, headspace sorptive extraction, purge-and-trap headspace). The S&T-HS cell exhibits satisfactory representativeness, much higher than the three other techniques. This allows, for the first time, a proposal to use this technol. as an olfactive camera to capture and restore an odor. The method was tested on a sample of a complex fresh ashtray odor.

Journal of Agricultural and Food Chemistry published new progress about Odor and Odorous substances. 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, SDS of cas: 104-76-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Armylisas, Abu Hassan N.; Fauzi, Siti H. M.; Mohd, Noor K.; Yeong, Shoot K.; Zainab, Idris; Azwadi, Che Sidik N. published the artcile< Excellent Properties of Dimer Fatty Acid Esters as Biolubricant Produced by Catalyst- and Solvent-Free Esterification>, Formula: C8H18O, the main research area is dimer fatty acid ester biolubricant catalyst solvent free esterification.

Currently most technologies available to produce esters require acid or base catalysts for esterification or transesterification reactions. Production of dimerate esters (DE) exhibiting potential as a biolubricant for low temperature applications using catalyst- and solvent-free approaches is presented in this article. Hydrogenated C36 dimer acid and alc. are reacted under the following conditions: dimer acid/alc. (1:4.5 molar ratio), 150-200 °C, 24 h, 3Å mol. sieve (15% weight/weight). The performances of four DE species-dibutyl, dihexyl, di-(2-ethylhexyl), and dioctyl dimerate-as lubricant base stocks are evaluated by kinematic viscosity, viscosity index, cloud and pour point (cold flow properties) as well as oxidative stability, and compared with com. synthetic lubricant base stock and DE, Radialube 7121. High viscosity indexes ranging between 129 and 138 are observed for the synthesized DEs, which are comparable with two com. base stock, polyalpha olefin (PAO), and polyolester (POE). Significantly low pour point, less than -42 °C, is observed for di-(2-ethylhexyl) dimerate attributed to the branching of the side chain. The DEs are categorized as ISO VG 68 based on their viscosity according to ISO 3448 classification and show potential as biolubricant with high viscosity index and excellent cold flow properties. Practical Applications: DFAE obtained have high potential to be used as lubricant base stock for equipment and machinery operating at extremely low temperature

European Journal of Lipid Science and Technology published new progress about Cloud point. 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, Formula: C8H18O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Wakayama, Takanari; Ito, Yuki; Miyake, Mio; Nomasa, Karin; Sakai, Kiyoshi; Oya, Naoko; Sato, Hirotaka; Ohno, Hiroyuki; Kamijima, Michihiro published the artcile< Inhalation exposure to 2-ethyl-1-hexanol causes hepatomegaly and transient lipid accumulation without induction of peroxisome proliferator-activated receptor alpha in mice.>, SDS of cas: 104-76-7, the main research area is 2-Ethyl-1-hexanol; Hepatic enlargement; Inhalation exposure; Lipid droplet; Peroxisome proliferator-activated receptor alpha (PPARα); Volatile organic compound (VOC).

2-Ethyl-1-hexanol (2EH) is a volatile organic compound known to cause sick building syndrome. However, 2EH-induced hepatotoxicity has been mainly evaluated in experiments orally administering 2EH as a metabolite of di(2-ethylhexyl) phthalate. To evaluate the hepatotoxicity risk of 2EH as an indoor air pollutant, we exposed 10-wk-old male ICR mice to 2EH by inhalation for 8 h/d, 5 d/wk for 3 months (0, 20, 60, or 150 ppm) or 6 months (0, 0.5, 10, or 100 ppm). In both experiments, relative liver weights significantly increased in the highest exposure groups. The 3-month exposure increased histopathological lipid droplets in the liver in a dose-dependent manner, hepatic triglyceride at all exposure levels, hepatic phospholipid at 150 ppm, and microsomal triglyceride transfer protein at 60 and 150 ppm; however, these changes were not observed following the 6-month of exposure. Following the 3-month exposure, alanine transaminase and peroxisomal bifunctional proteins, known markers of liver injury and peroxisome proliferation, respectively, remained unaltered. Therefore, in the present study, the inhalation concentration range of 2EH induced a toxic hypertrophic change, revealing a limited role of peroxisome proliferator-activated receptor alpha (PPARα). The liver weights may have presumably increased via a mechanism independent of PPARα activation.

Industrial health published new progress about 104-76-7. 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, SDS of cas: 104-76-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Talik, Agnieszka; Tarnacka, Magdalena; Geppert-Rybczynska, Monika; Hachula, Barbara; Bernat, Roksana; Chrzanowska, Agnieszka; Kaminski, Kamil; Paluch, Marian published the artcile< Are hydrogen supramolecular structures being suppressed upon nanoscale confinement? The case of monohydroxy alcohols>, Recommanded Product: 2-Ethylhexan-1-ol, the main research area is monohydroxy alc silica alumina nanopore nanoconfinement; Confinement; Dielectric spectroscopy; Hydrogen bonds; Infrared spectroscopy; Interfacial energy; Monohydroxy alcohols; Self-assembly; Surface effects; Surface tension.

In this paper, the mol. dynamics, H-bonding pattern and wettability of the primary and secondary monohydroxyalcs., 2-ethyl-1-hexanol (2E1H), 2-ethyl-1-butanol (2E1B) and 5-methyl-3-heptanol (5M3H) infiltrated into native and functionalized silica and alumina pores having pore diameters, d = 4 nm and d = 10 nm, have been studied with the use of Broadband Dielec. (BDS) and Fourier Transform IR (FTIR) spectroscopies, as well as contact angle measurements. We found significant differences in the behavior of alcs. forming chain- (2E1H, 2E1B) or micelle-like (5M3H) supramol. structures despite of their similarities in the wettability and interfacial energy. It turned out that nanoassocs. as well as H-bonds are more or less affected by the confinement dependently on the chem. structure and alc. order. Moreover, a peculiar behavior of the self-assemblies at the interface was noted in the latter material (5M3H). Finally, it was found that irresp. to the sample, type of pores, functionalization, the temperature evolution of Debye relaxation times, τD, of the confined systems deviates from the bulk behavior always at similar τD due to vitrification of the interfacial layer. This finding is a clear indication that unexpectedly dynamics (mobility) of the supramol. structures close to the hydrophilic and hydrophobic surfaces is similar in each system.

Journal of Colloid and Interface Science published new progress about Contact angle. 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, Recommanded Product: 2-Ethylhexan-1-ol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Melchiorre, Massimo; Cucciolito, Maria Elena; Di Serio, Martino; Ruffo, Francesco; Tarallo, Oreste; Trifuoggi, Marco; Esposito, Roberto published the artcile< Homogeneous Catalysis and Heterogeneous Recycling: A Simple Zn(II) Catalyst for Green Fatty Acid Esterification>, HPLC of Formula: 104-76-7, the main research area is green fatty acid esterification homogeneous catalysis heterogeneous recycling; zinc catalyzed esterification fatty acid alc polyol.

This work describes the use of simple zinc(II) salts (ZnCl2, ZnCO3, Zn(OAc)2, ZnO, Zn(ClO4)2, Zn(TfO)2, and Zn(BF4)2) as effective catalysts for the esterification of fatty acids with long-chain alcs. and simple polyols through a homogeneous system that allows the gradual and selective removal of water. The results show that the catalytic activity depends on the nature of the counterion: the most effective are the salts with poorly coordinating anions (perchlorate and triflate) or containing basic Bronsted anions (oxide, acetate, and carbonate). However, only with the latter is it possible to fully recover the catalyst at the end of each run, which is easily filtered in the form of zinc carboxylate, given its insolubility in the ester produced. In this way, it is possible to recycle the catalyst numerous times, without any loss of activity. This beneficial prerogative couples the efficiency of the homogeneous catalysis with the advantage of the heterogeneous catalysis. The process is, therefore, truly sustainable, given its high efficiency, low energy consumption, ease of purification, and the absence of auxiliary substances and byproducts.

ACS Sustainable Chemistry & Engineering published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, HPLC of Formula: 104-76-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Hu, Yingying; Zhang, Lang; Liu, Qian; Wang, Yan; Chen, Qian; Kong, Baohua published the artcile< The potential correlation between bacterial diversity and the characteristic volatile flavour of traditional dry sausages from Northeast China>, Synthetic Route of 104-76-7, the main research area is sausage alc ketone terpene flavor Lactobacillus Weissella Northeast China; Bacterial community; HS-SPME-GC-MS; High-throughput sequencing; Traditional dry sausages; Volatile compounds.

The objective of this study was to explore the correlation between bacterial communities and volatile compounds in traditional dry sausages from different regions in Northeast China. The bacterial community structure of dry sausages from five different regions as determined by high-throughput sequencing technol. demonstrated that Firmicutes and Proteobacteria were the predominant phyla; Lactobacillus, Staphylococcus, Leuconostoc, Lactococcus and Weissella were the predominant genera; and Staphylococcus xylosus, Lactobacillus sakei, Weissella hellenica, Leuconostoc citreum, Lactococcus raffinolactis and Lactobacillus plantarum were the predominant species. Meanwhile, a total of 120 volatile compounds were detected in sausages from five different regions and mainly included alcs., acids, aldehydes, ketones, esters and terpenes. Furthermore, the potential correlations between the core bacteria and major volatile compounds (64) were explored based on Spearman’s correlation anal. Pos. correlations were found between W. hellenica, Lb. sakei, Lactococcus lactis, Lactobacillus alimentarius, Lb. plantarum and carboxylic acids and alcs. Lc. lactis, Lb. alimentarius and Lb. plantarum were associated with the production of most esters, aldehydes and ketones. This study provides a deep insight into the relationship between the bacterial community and the volatile flavor profile of dry sausages, which may be helpful for the production of fermented dry sausages.

Food Microbiology published new progress about Acidobacteria. 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, Synthetic Route of 104-76-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Larina, Olga V.; Valihura, Karina V.; Kyriienko, Pavlo I.; Vlasenko, Nina V.; Balakin, Dmytro Yu.; Khalakhan, Ivan; Cendak, Tomaz; Soloviev, Sergiy O.; Orlyk, Svitlana M. published the artcile< Successive vapour phase Guerbet condensation of ethanol and 1-butanol over Mg-Al oxide catalysts in a flow reactor>, HPLC of Formula: 104-76-7, the main research area is ethanol butanol Guerbet condensation magnesium aluminum oxide hydrotalcite catalyst.

The successive vapor phase condensation of ethanol and 1-butanol (via Guerbet reaction) in a flow reactor under atm. pressure was studied over catalytic Mg-Al oxide compositions Wherein the vapor phase condensation of 1-butanol to 2-ethyl-1-hexanol in flow has been investigated for the first time. The acid/base capacity ratio, which is determined by the Mg/Al ratio, is an important characteristic for the activity and selectivity of Mg-Al oxide catalysts in the abovementioned processes. The carbon chain length of the reacting alcs., an arrangement of surface active sites and other steric factors also have an impact on Guerbet condensation in the vapor phase. High productivity of Mg-Al oxide system to the Guerbet alcs.: 1-butanol – 25 g/(Lcat·h), 2-ethyl-1-hexanol – 19 g/(Lcat·h), has been achieved. The results have shown a prospect of successive conversion realization: (1) ethanol → 1-butanol; (2) 1-butanol → 2-ethyl-1-hexanol for the production of 2-ethyl-1-hexanol from ethanol.

Applied Catalysis, A: General published new progress about Acidity. 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, HPLC of Formula: 104-76-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts