Category: esters-buliding-blocks

Arnold, Robert J. published the artcileAssessing the impact of corn variety and Texas terroir on flavor and alcohol yield in new-make bourbon whiskey, Name: Ethyl nonanoate, the main research area is corn bourbon whiskey flavor alc yield Texas.

The whiskey industry is dominated by whiskey styles with recipes that contain corn as the primary grain. However, little research has been conducted to investigate whiskey specific distinctions arising from different corn varieties and growing environments (i.e. terroir). Further, no studies have investigated the aroma or flavor impacts of different varieties and terroirs. Here, three different commodity yellow dent hybrid corn varieties were grown on different farms in Texas, spanning from the Texas Panhandle to the Mexico-United States border. Using novel small-batch mashing techniques, a newly developed new-make (i.e. unaged whiskey, immediate byproduct of distillation) bourbon sensory lexicon, a trained sensory panel, high-performance liquid chromatog., and gas chromatog.-mass spectrometry/olfactometry (GC-MS/O), we report for the first time a method for evaluating sample effects on alc. yield and flavor in new-make bourbon whiskey. We discover that variety, terroir and their interactions, previously ignored, can substantially affect valuable sensory aspects of whiskey, suggesting the importance of scientifically evaluating corn genetics and agronomy for developing better whiskey. Excitingly, our data suggest milled corn with higher levels of benzadehyde, readily measured by GC-MS/O, correlates with improved sensory aspects of distillate, which must be expensively evaluated using a trained human sensory panel.

PLoS One published new progress about Density. 123-29-5 belongs to class esters-buliding-blocks, name is Ethyl nonanoate, and the molecular formula is C11H22O2, Name: Ethyl nonanoate.

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

Zhao, Guanjia published the artcileThermophysical properties of fatty acid methyl and ethyl esters, HPLC of Formula: 106-32-1, the main research area is fatty acid methyl ethyl ester thermophys property.

In present study, surface light scattering (SLS) was used for the simultaneous determination of liquid surface tension and kinematic viscosity of twelve fatty acid esters, including six Me esters (FAMEs) and six Et esters (FAEEs). The SLS apparatus was firstly checked with a reference fluid n-dodecane, and a good agreement of our data from SLS with those from literatures could be found. By utilizing this apparatus, both properties were investigated in the temperature ranges between (298 and 448) K for all substances with an exception of Me myristate and Et myristate covering the temperatures between (323 and 448) K due to their high m.ps. Addnl., the liquid d. and refractive index were determined by an Anton Paar U-tube densimeter between (293 and 453) K and a refractometer from (278 to 358) K, resp. The surface tension and viscosity data obtained from the SLS experiment were fitted to the van der Waals type and the reciprocal temperature-dependent polynomial equations, resp. The quadric and linear functions were adopted to correlate the d. and refractive index data, resp. This work improves the data situation for these fatty acid esters especially at elevated temperatures and provides necessary data and models for the crucial thermophys. properties in connection with the design and optimization of the injection system of an internal combustion engine (ICE).

Journal of Chemical Thermodynamics published new progress about Density. 106-32-1 belongs to class esters-buliding-blocks, name is Ethyl octanoate, and the molecular formula is C10H20O2, HPLC of Formula: 106-32-1.

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

Zhao, Guanjia published the artcileThermophysical properties of fatty acid methyl and ethyl esters, Recommanded Product: Methyl octanoate, the main research area is fatty acid methyl ethyl ester thermophys property.

In present study, surface light scattering (SLS) was used for the simultaneous determination of liquid surface tension and kinematic viscosity of twelve fatty acid esters, including six Me esters (FAMEs) and six Et esters (FAEEs). The SLS apparatus was firstly checked with a reference fluid n-dodecane, and a good agreement of our data from SLS with those from literatures could be found. By utilizing this apparatus, both properties were investigated in the temperature ranges between (298 and 448) K for all substances with an exception of Me myristate and Et myristate covering the temperatures between (323 and 448) K due to their high m.ps. Addnl., the liquid d. and refractive index were determined by an Anton Paar U-tube densimeter between (293 and 453) K and a refractometer from (278 to 358) K, resp. The surface tension and viscosity data obtained from the SLS experiment were fitted to the van der Waals type and the reciprocal temperature-dependent polynomial equations, resp. The quadric and linear functions were adopted to correlate the d. and refractive index data, resp. This work improves the data situation for these fatty acid esters especially at elevated temperatures and provides necessary data and models for the crucial thermophys. properties in connection with the design and optimization of the injection system of an internal combustion engine (ICE).

Journal of Chemical Thermodynamics published new progress about Density. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Recommanded Product: Methyl octanoate.

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

Zhao, Guanjia published the artcileThermophysical properties of fatty acid methyl and ethyl esters, Product Details of C11H22O2, the main research area is fatty acid methyl ethyl ester thermophys property.

In present study, surface light scattering (SLS) was used for the simultaneous determination of liquid surface tension and kinematic viscosity of twelve fatty acid esters, including six Me esters (FAMEs) and six Et esters (FAEEs). The SLS apparatus was firstly checked with a reference fluid n-dodecane, and a good agreement of our data from SLS with those from literatures could be found. By utilizing this apparatus, both properties were investigated in the temperature ranges between (298 and 448) K for all substances with an exception of Me myristate and Et myristate covering the temperatures between (323 and 448) K due to their high m.ps. Addnl., the liquid d. and refractive index were determined by an Anton Paar U-tube densimeter between (293 and 453) K and a refractometer from (278 to 358) K, resp. The surface tension and viscosity data obtained from the SLS experiment were fitted to the van der Waals type and the reciprocal temperature-dependent polynomial equations, resp. The quadric and linear functions were adopted to correlate the d. and refractive index data, resp. This work improves the data situation for these fatty acid esters especially at elevated temperatures and provides necessary data and models for the crucial thermophys. properties in connection with the design and optimization of the injection system of an internal combustion engine (ICE).

Journal of Chemical Thermodynamics published new progress about Density. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Product Details of C11H22O2.

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

Ozeren, Husamettin D. published the artcileIn Silico Screening of Green Plasticizers for Poly(vinyl chloride), Computed Properties of 539-88-8, the main research area is polyvinyl chloride green plasticizer simulation property.

Phthalate derivative plasticizers used in poly(vinyl chloride) (PVC) processing have been a subject of concern because of their possible toxicity. Hence, there is a growing interest toward new, nontoxic, “”green”” plasticizers. In this work, the performances of biobased plasticizers including esters of succinic, levulinic, oleic, and adipic acids were compared in reference to the conventional plasticizer bis(2-ethylhexyl) phthalate (aka dioctyl phthalate or DOP). For this purpose, mol. dynamics (MD) simulations were used to determine polymer/plasticizer interactions and to predict thermomech. properties of polymer mixtures The variation of glass temperatures (Tg) of the systems was investigated, and the stabilities of the polymer/plasticizer mixtures were compared through the Flory-Huggins solubility parameter. The mech. properties were investigated through nonequilibrium MD simulations. Young’s modulus and yield strength values were predicted through stress-strain curves. The results suggest that succinic acid derivatives have the potential to replace phthalate derivatives due to their good solubility in PVC and their effectiveness in reducing the Tg.

Macromolecules (Washington, DC, United States) published new progress about Density. 539-88-8 belongs to class esters-buliding-blocks, name is Ethyl 4-oxopentanoate, and the molecular formula is C7H12O3, Computed Properties of 539-88-8.

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

Wang, Xiaojie published the artcileVolumetric properties of n-hexadecane/ethyl octanoate mixtures from 293.15 K to 363.15 K and pressures up to 60 MPa, Synthetic Route of 106-32-1, the main research area is ethyl octanoate hexadecane density vapor pressure.

The densities of pure Et octanoate and n-hexadecane/ethyl octanoate mixtures were measured from 293.15 K to 363.15 K and up to 60 MPa using U-shape vibrating-tube densimeter. The results were correlated as Tait equation, the excess molar volumes, isothermal compressibilities, and isobaric thermal expansivities of the mixtures were calculated and analyzed. In addition, the parameters in the PC-SAFT equation for Et octanoate were obtained based on the high-pressure densities obtained in this work and the vapor pressure in the literatures. The densities of the mixtures were predicted by PC-SAFT equation, the absolute average deviations between the exptl. results and those calculated were less than 0.52%.

Journal of Chemical Thermodynamics published new progress about Density. 106-32-1 belongs to class esters-buliding-blocks, name is Ethyl octanoate, and the molecular formula is C10H20O2, Synthetic Route of 106-32-1.

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

Xue, Sa published the artcileGeneral models for prediction densities and viscosities of saturated and unsaturated fatty acid esters, Application of Ethyl nonanoate, the main research area is saturated unsaturated fatty acid ester prediction density.

Biodiesel is a very promising renewable energy, whose properties are determined by fatty acid esters in it. The work aims to develop prediction models based on their mol. structure to estimate the d. and viscosity of saturated and unsaturated fatty acid esters in a wide range of temperature and pressure. Densities and viscosities of Et hexanoate and Et nonanoate were measured from 313.15 K to 363.15 K and at pressures up to 15 MPa to get more exptl. data. The effect of temperature, pressure and mol. structure on d. and viscosity based on the exptl. data in this work and collected from literature found an interesting phenomenon that densities decrease with the increasing carbon atoms number in the chain of the saturated fatty acid esters at low temperature, but there is an opposite trend at high temperature Two models derived from the Tait equation were proposed for densities with the average absolute relative deviation of 0.15% for saturated fatty acid Me esters (FAMEs), 0.13% for saturates fatty acid Et esters (FAEEs), 0.17% for unsaturated FAMEs, 0.06% for unsaturated FAEEs, resp. For viscosity, two models based on the Andrade-Tait model were proposed with the average absolute relative deviation of 1.49% for saturated FAMEs, 0.92% for saturated FAEEs, 4.54% for unsaturated FAMEs and 2.15% for unsaturated FAEEs, resp.

Journal of Molecular Liquids published new progress about Density. 123-29-5 belongs to class esters-buliding-blocks, name is Ethyl nonanoate, and the molecular formula is C11H22O2, Application of Ethyl nonanoate.

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

Wang, Xiaojie published the artcileLiquid viscosities of ethyl caprylate and ethyl caprate at elevated temperatures and pressures, Safety of Ethyl octanoate, the main research area is ethyl caprylate caprate viscosity temperature pressure.

In this work, the high-pressure liquid viscosities of Et caprylate and Et caprate were measured at the temperatures from 303 K to 362 K and pressures up to 30 MPa. The measurements were carried out based the falling-cylinder viscosity measurement system which was established in our laboratory The combined expanded relative uncertainty of the present measurement was <0.03 with a confidence level of 0.95. The high-pressure viscosity values were correlated with Andrade-Tait equation. The average relative deviation between exptl. data and calculated results from Andrade-Tait equation for Et caprylate and Et caprate was 0.38% and 0.73%, resp. The maximum relative deviation was 1.32% and 1.96%, resp. Journal of Molecular Liquids published new progress about Density. 106-32-1 belongs to class esters-buliding-blocks, name is Ethyl octanoate, and the molecular formula is C10H20O2, Safety of Ethyl octanoate.

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

Wang, Xiaojie published the artcileLiquid viscosities for methyl hexanoate, methyl heptanoate, methyl caprylate, and methyl nonanoate at high pressures, Formula: C9H18O2, the main research area is methyl hexanoate heptanoate caprylate nonanoate liquid viscosity.

The exptl. measurements for liquid viscosities of four fatty acid Me esters, including Me hexanoate, Me heptanoate, Me caprylate, and Me nonanoate, were carried out with a falling-cylinder viscometer. For the present measurement, the temperature ranges were from 292 K to 362 K and the pressure was reached to 30 MPa. The combined expanded relative uncertainty of the viscosity measurements was within 0.03 with 0.95 confidence level. The viscosity data for each studied esters were correlated by Andrade-Tait equation, and the average absolute relative deviation between the exptl. data and calculated values is 0.31%, 0.44%, 0.38%, and 0.25% for Me hexanoate, Me heptanoate, Me caprylate, and Me nonanoate, resp. The maximum absolute relative deviation is 1.09%, 1.28%, 1.28%, and 0.75%.

Journal of Chemical Thermodynamics published new progress about Density. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Formula: C9H18O2.

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

Liu, Yixuan published the artcileCatalytic Stereoselective Conversion of Biomass-Derived 4′-Methoxypropiophenone to Trans-Anethole with a Bifunctional and Recyclable Hf-Based Polymeric Nanocatalyst, Application In Synthesis of 539-88-8, the main research area is methoxypropiophenone transanethole hafnium polymeric nanocatalyst catalytic stereoselective conversion; bifunctional catalysis; biomass conversion; dehydration; transfer hydrogenation; unconventional MOFs/polymeric materials.

Anethole (AN) is widely used as an odor cleaner in daily necessities, and can also be applied in the fields of food additives, drug synthesis, natural preservatives, and polymeric materials′ preparation Considering environmental and economic benefits, the use of biomass raw materials with non-precious metal catalysts to prepare high-value fine chems. is a very promising route. Here, we developed an acid-base bifunctional polymeric material (PhP-Hf (1:1.5)) composed of hafnium and phenylphosphonate in a molar ratio of 1:1.5 for catalytic conversion of biomass-derived 4′-methoxypropiophenone (4-MOPP) to AN via cascade Meerwein-Pondorf-Verley (MPV) reduction and dehydration reactions in a single pot. Compared with the traditional catalytic systems that use high-pressure hydrogen as a hydrogen donor, alc. can be used as a safer and more convenient hydrogen source and solvent. Among the tested alcs., 2-pentanol was found to be the best candidate in terms of pronounced selectivity. A high AN yield of 98.1% at 99.8% 4-MOPP conversion (TOF: 8.5 h-1) could be achieved over PhP-Hf (1:1.5) at 220 °C for 2 h. Further exploration of the reaction mechanism revealed that the acid and base sites of PhP-Hf (1:1.5) catalyst synergistically promote the MPV reduction step, while the Bronsted acid species significantly contribute to the subsequent dehydration step. In addition, the PhP-Hf polymeric nanocatalyst can be recycled at least five times, showing great potential in the catalytic conversion of biomass.

Polymers (Basel, Switzerland) published new progress about Biomass. 539-88-8 belongs to class esters-buliding-blocks, name is Ethyl 4-oxopentanoate, and the molecular formula is C7H12O3, Application In Synthesis of 539-88-8.

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