Category: 110-42-9

Singh, Randolph R. published the artcileExpanded coverage of non-targeted LC-HRMS using atmospheric pressure chemical ionization: a case study with ENTACT mixtures, HPLC of Formula: 110-42-9, the main research area is liquid chromatog HRMS atm pressure chem ionization ENTACT; Atmospheric pressure chemical ionization (APCI); EPA’s Non-Targeted Analysis Collaborative Trial (ENTACT); Electrospray ionization (ESI); High-resolution mass spectrometry (HRMS); Non-targeted analysis (NTA).

Non-targeted anal. (NTA) is a rapidly evolving anal. technique with numerous opportunities to improve and expand instrumental and data anal. methods. NTA was performed on eight synthetic mixtures containing 1264 unique chem. substances from the U. S. Environmental Protection Agency’s Non-Targeted Anal. Collaborative Trial (ENTACT). These mixtures were analyzed by atm. pressure chem. ionization (APCI) and electrospray ionization (ESI) using both pos. and neg. polarities for a total of four modes. Out of the 1264 ENTACT chem. substances, 1116 were detected in at least one ionization mode, 185 chems. were detected using all four ionization modes, whereas 148 were not detected. Forty-four chems. were detected only by APCI, and 181 were detected only by ESI. Mol. descriptors and physicochem. properties were used to assess which ionization type was preferred for a given compound One ToxPrint substructure (naphthalene group) is enriched in compounds only detected using APCI, and eight ToxPrints (e.g., several alc. moieties) were enriched in compounds only detected using ESI. Examination of physicochem. parameters for ENTACT chems. suggests that those with higher aqueous solubility preferentially ionized by ESI-. While ESI typically detects a larger number of compounds, APCI offers chromatograms with less background, fewer coelutions, and addnl. chem. space coverage, suggesting both should be considered for broader coverage in future NTA research.

Analytical and Bioanalytical Chemistry published new progress about Atmospheric pressure chemical ionization mass spectrometry. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, HPLC of Formula: 110-42-9.

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

Tang, Bo published the artcileA β-cyclodextrin covalent organic framework used as a chiral stationary phase for chiral separation in gas chromatography, Product Details of C11H22O2, the main research area is cyclodextrin covalent organic framework chiral stationary phase gas chromatog.

Chiral covalent organic frameworks (CCOFs) featuring chirality, stability, and good porosity have attracted a considerable amount of attention due to their important applications, such as asym. catalysis, chiral separation, and chiral recognition. In this study, a β-cyclodextrin (β-CD) covalent organic framework (β-CD-COF) diluted with polysiloxane OV-1701 was explored as a novel chiral stationary phase (CSP) for gas chromatog. (GC) separation of racemates. The β-CD-COF coated capillary column had excellent selectivity, not only for the separation of linear alkanes, linear alcs., fatty acid Me esters mixture, the Grob mixture and positional isomers, but also for the resolution of chiral compounds, including chiral alcs., aldehydes, ethers, and amino acid derivatives In addition, the β-CD-COF-coated capillary column presented good repeatability and reproducibility. This work indicated the great potential of the CCOFs coated capillary column for the chromatog. separation of enantiomers.

Chinese Chemical Letters published new progress about Alcohols, chiral Role: ANT (Analyte), ANST (Analytical Study). 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

Gaida, Meriem published the artcileModeling approaches for temperature-programmed gas chromatographic retention times under vacuum outlet conditions, Name: Methyl decanoate, the main research area is modeling approach temperature programmed gas chromatog retention time vacuum; Mass spectrometer detector; Method development and optimization; Retention equation; Thermodynamic modeling.

This contribution evaluates the performance of two predictive approaches in calculating temperature-programmed gas chromatog. retention times under vacuum outlet conditions. In the first approach, the predictions are performed according to a thermodn.-based model, while in the second approach the predictions are conducted by using the temperature-programmed retention time equation. These modeling approaches were evaluated on 47 test compounds belonging to different chem. classes, under different exptl. conditions, namely, two modes of gas flow regulation (i.e., constant inlet pressure and constant flow rate), and different temperature programs (i.e., 7°C/min, 5°C/min, and 3°C/min). Both modeling approaches gave satisfactory results and were able to accurately predict the elution profiles of the studied test compounds The thermodn.-based model provided more satisfying results under constant flow rate mode, with average modeling errors of 0.43%, 0.33%, and 0.15% across all the studied temperature programs. Nevertheless, under constant inlet pressure mode, lower modeling errors were achieved when using the temperature-programmed retention time equation, with average modeling errors of 0.18%, 0.18%, and 0.31% across the used temperature programs.

Journal of Chromatography A published new progress about Alkanes Role: ANT (Analyte), ANST (Analytical Study) (C7-C30). 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Name: Methyl decanoate.

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

Abdulagatov, Ilmutdin M. published the artcileIsochoric heat capacity, phase transition and derived key thermodynamic properties of methyl decanoate, Formula: C11H22O2, the main research area is methyl decanoate isochoric heat capacity phase transition thermodn property.

In the present work single – and two-phase isochoric heat capacity (CV) and liquids-gas phase transition temperature (TS) and d. (ρS) of Me decanoate as component of biodiesel derived from coconut oil or babassu oil have been studied. The 15 liquid and vapor isochores between (152 and 834) kg·m-3 at temperatures from (300 to 463) K and at pressures up to 16 MPa were determined using high-temperature and high-pressure nearly constant-volume adiabatic calorimeter. For each exptl. isochores the measurements were conducted in the two-phase region in the immediate vicinity of the phase-transition temperatures (TS) to precisely determine the phase boundary d., one-phase and two-phase isochoric heat capacities (ρS,CV1, and CV2) using isochoric heat -capacity discontinuity behavior technique. For ten liquid isochores, the TSwas exptl. determined usingCVdiscontinuity method (irregular behavior of CV). For vapor (152.09 and 204.55) kg·m-3 and near-critical (235.13 and 300.83) kg·m-3 isochores we have never reached isochoric heat-capacity discontinuity temperatures TSdue to thermal decomposition of the Me decanoate at high temperatures (above 473 K). The measured CV2 as a function of sp. volume (V) along the various isotherms (below 473 K) were used to accurately estimate the values of the second temperature derivatives of chem. potential and vapor-pressure using theor. based Yang-Yang relation. The contributions of the vapor-pressure and the chem. potential to the measured total two-phase CV2 of Me decanoate were estimated The measured CV2ρS, and TS were used for determination many key thermodn. properties of Me decanoate along the saturation curve as well as the critical property data (TC=669.5 ± 5 K andρC = 287 ± 5 kg·m-3).

Fuel published new progress about Babassu oil Role: NUU (Other Use, Unclassified), USES (Uses). 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Formula: C11H22O2.

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

Balachandran, S. published the artcileEnhancement of aqueous solubility and extraction of lauric acid using hydrotropes and its interaction studies by COSMO-RS model, Related Products of esters-buliding-blocks, the main research area is enhancement aqueous solubility extraction lauric acid hydrotrope.

In this study, conductor like screening model for real solvents was used to analyze the ability of hydrogen bond donor, hydrogen bond acceptor and electron affinity of all the studied species such as water, lauric acid (LA), sodium benzoate (SB), sodium salicylate (SS), nicotinamide (NI), and urea (UA). Further, the different hydrotropes solutions were prepared with different concentrations (0-3.0 mol/L) in order to analyze the solubility of lauric acid at different temperatures (303-313 K). Subsequently, hydrotropes based extraction of lauric acid from cold press coconut oil (CPCO) and com.-grade edible coconut oil (CGECO) was conducted at 313 K and 0.1 MPa. GC-MS anal. has been carried out on cold press coconut oil, com. grade edible coconut oil and hydrotropically extracted samples to characterize the different fatty acid compounds present in it. It was observed that the sodium benzoate hydrotrope solution extracted samples has lauric acid as a significant component in the GC-MS spectra when compared to the extracted samples of sodium salicylate hydrotrope solution

Journal of Dispersion Science and Technology published new progress about Coconut oil Role: NUU (Other Use, Unclassified), USES (Uses). 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Related Products of esters-buliding-blocks.

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

Chakraborty, Soumi published the artcileRedox-active ligand based Mn(I)-catalyst for hydrosilylative ester reduction, SDS of cas: 110-42-9, the main research area is manganese phenalenyl preparation redox active catalyst; ester hydrosilylation polymethylhydrosiloxane manganese catalyst; alc preparation.

Herein a Mn(I) catalyst bearing a redox-active phenalenyl-based ligand is reported for the efficient hydrosilylation of esters to alcs. using polymethylhydrosiloxane as the inexpensive silane source under mild conditions. Mechanistic investigations suggest a strong ligand-metal cooperation where a ligand-based single electron transfer (SET) process initiates the reaction through Si-H bond activation.

Chemical Communications (Cambridge, United Kingdom) published new progress about Alcohols Role: SPN (Synthetic Preparation), PREP (Preparation). 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, SDS of cas: 110-42-9.

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

Wang, Xin published the artcileSystematic study of the material, structure and lacquering techniques of lacquered wooden coffins from the Eastern Regius Tombs of the Qing Dynasty, China, Product Details of C11H22O2, the main research area is mercury sulfide lacquered wooden coffin lacquering pigment.

This paper presents a series of detailed anal. results from lacquered wooden coffins of Emperor Qianlong’s concubines (Huixian, Shujia) and second empress (Wulanala) excavated from the Eastern Regius Tombs of the Qing Dynasty, China. The anal. is focused on the materials used in the lacquered wooden coffins, specifically investigating the pigments, lacquers, organic additives and lacquering techniques using digital microscopy, SEM-EDS, XRD, micro-Raman spectroscopy, FT-IR and THM-Py-GC/MS. The results demonstrate that the mineral pigments were mainly HgS, As2S3, the golden area in the lacquer film layers mainly contained elements Au and Ag, the lacquer ash layers mainly included several layers of stucco and fiber layers arranged alternately, the lacquer sap was urushi, and heat-bodied tung oil was also present in the lacquer. Furthermore, several kinds of lacquering techniques, which demonstrated traditional Chinese lacquering and the rigid hierarchy of funerals in feudal dynasties, are also identified in this investigation.

Microchemical Journal published new progress about Attenuated-total-reflectance Fourier-transform IR spectroscopy. 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

He, Yongrui published the artcileSeparation performance of a new triptycene-based stationary phase with polyethylene glycol units and its application to analysis of the essential oil of Osmanthus fragrans Lour, SDS of cas: 110-42-9, the main research area is Osmanthu essential oil gase chromatog stationary phase triptycene PEG; Essential oil; Gas chromatography; Operational temperature range; Structural and positional isomers; Triptycene-based stationary phase.

This work presents a new triptycene-based stationary phase (TP-PEG) combining the three-dimensional (3D) triptycene (TP) framework with polyethylene glycol (PEG) moieties for gas chromatog. (GC) separations Its statically coated capillary column showed high column efficiency of 5263 plates/m determined by naphthalene at 120°C. Its Rohrschneider-McReynolds constants and Abraham solvation system constants were measured to characterize its polarity and mol. interactions with analytes of different types. As evidenced, the TP-PEG column showed high-resolution performance for the isomers of anilines, phenols, halobenzenes and alkanes with distinct advantages over the PEG columns, particularly those critical isomers such as 3,5-/2,3-xylidine (R = 2.94), m-/p-chlorotoluene (R = 1.92), p-/m-cresol (R = 1.89), 2,2-dimethylbutane/2-methylpentane (R = 1.51), 2,2,3-trimethylbutane /2,3-dimethyl pentane (R = 1.74) and 2,3-dimethylpentane/n-heptane (R = 1.92). In addition, it exhibited good column repeatability and reproducibility with the relative standard deviation (RSD) values of 0.02%-0.09% for run-to-run, 0.13%-0.22% for day-to-day and 2.7%-4.1% for column-to-column, resp., and a wide operational temperature range (30°C-280°C) . Its application to GC-MS anal. of the essential oil of Osmanthus fragrans has proven its good potential for practical anal. of complex samples.

Journal of Chromatography A published new progress about Alkanes Role: PUR (Purification or Recovery), PREP (Preparation). 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, SDS of cas: 110-42-9.

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

Wei, Duo published the artcileManganese and rhenium-catalyzed selective reduction of esters to aldehydes with hydrosilanes, Quality Control of 110-42-9, the main research area is aldehyde preparation photochem; carboxylic ester reduction manganese rhenium catalyst; triethylsilane carboxylic ester hydrosilylation; alkyl silyl acetal preparation chemoselective photochem.

The selective reduction of esters RC(O)OR1 [R = (4-chlorophenyl)methyl, naphthalen-2-ylmethyl, nonyl, etc.; R1 = Me, Et] to aldehydes RC(O)H (I), via the formation of stable alkyl silyl acetals RCH(OSi(C2H5)3)OR1 (II), for the first time, was achieved with both manganese, -Mn2(CO)10- and rhenium -Re2(CO)10- catalysts in the presence of triethylsilane as reductant. These two methods provide a direct access to a large variety of aliphatic and aromatic alkyl silyl acetals II and to the corresponding aldehydes I upon hydrolysis. The reactions proceeded in excellent yields and high selectivity at room temperature under photo-irradiation conditions (LED, 365 nm, 40 W, 9 h).

Chemical Communications (Cambridge, United Kingdom) published new progress about Acetals Role: SPN (Synthetic Preparation), PREP (Preparation) (silyl). 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Quality Control of 110-42-9.

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

Al-Gharibeh, Elyasa published the artcileOxidation kinetics of methyl decanoate in a motored engine, Computed Properties of 110-42-9, the main research area is methyl decanoate motored engine oxidation kinetics.

Low-temperature oxidation of Me decanoate was exptl. investigated in a motored engine. The engine was operated in a premixed mode at a fixed speed of 700 rpm and an intake temperature of 125°C. Compression ratio was varied between 5.5 and 9.0 for an equivalence ratio of 0.25. The study analyzes heat release and stable species concentrations in the oxidation products at each studied compression ratio. A gas chromatograph-mass spectrometer was used to identify and quantify the composition of the exhaust gas. More than sixty stable intermediate species were detected. Quant. concentration measurements were carried out for selected alkenes, aldehydes, ketones, ethers, and alcs. A Fourier transform IR spectrometer was used to detect and quantify carbon monoxide and dioxide. The oxidation process shares features in common with alkane oxidation, with differences related to Me ester intermediates formation specific to Me decanoate oxidation Specifically, the unsaturated ester Me prop-2-enoate was generated in considerable amounts The heat release and speciation trends show two-stage ignition and neg. temperature coefficient features. The exptl. data are also compared to numerical results calculated based on an existing reaction mechanism for Me decanoate.

Fuel published new progress about Acetoxymethyl esters Role: NUU (Other Use, Unclassified), USES (Uses). 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Computed Properties of 110-42-9.

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