Category: 1731-94-8

Prediction of Collision Cross Section Values: Application to Non-Intentionally Added Substance Identification in Food Contact Materials was written by Song, Xue-Chao;Dreolin, Nicola;Damiani, Tito;Canellas, Elena;Nerin, Cristina. And the article was included in Journal of Agricultural and Food Chemistry in 2022.Reference of 1731-94-8 The following contents are mentioned in the article:

The synthetic chems. in food contact materials can migrate into food and endanger human health. In this study, the traveling wave collision cross section in nitrogen values of more than 400 chems. in food contact materials were exptl. derived by traveling wave ion mobility spectrometry. A support vector machine-based collision cross section (CCS) prediction model was developed based on CCS values of food contact chems. and a series of mol. descriptors. More than 92% of protonated and 81% of sodiated adducts showed a relative deviation below 5%. Median relative errors for protonated and sodiated mols. were 1.50 and 1.82%, resp. The model was then applied to the structural annotation of oligomers migrating from polyamide adhesives. The identification confidence of 11 oligomers was improved by the direct comparison of the exptl. data with the predicted CCS values. Finally, the challenges and opportunities of current machine-learning models on CCS prediction were also discussed. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Reference of 1731-94-8).

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Reference of 1731-94-8

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

Experimental and correlational study of isobaric molar heat capacities of fatty acid esters: Ethyl nonanoate and ethyl dodecanoate was written by Liu, Xiangyang;Zhu, Chenyang;Yang, Feng;Su, Chao;He, Maogang. And the article was included in Fluid Phase Equilibria in 2019.Electric Literature of C20H40O2 The following contents are mentioned in the article:

An exptl. study on the isobaric molar heat capacities of Et nonanoate and Et dodecanoate was performed at temperatures between 303 K and 393 K and at pressures between 0.1 MPa and 25.2 MPa. An increase of isobaric molar heat capacity with temperature increase was observed, and temperature was found to have a greater effect on isobaric molar heat capacity than pressure. Then the isobaric molar heat capacity data of 18 saturated fatty acid Me and Et esters in literature were selected, to get a general correlation for the isobaric molar heat capacity of saturated fatty acid alkyl esters. The average absolute relative deviation and the maximum deviation of the present correlation from exptl. data are lower than 0.70% and 3.82%, resp. At last, to test the predictive ability of the proposed correlation, the heat capacities of Et nonanoate and Et dodecanoate were calculated The average absolute relative deviation and the maximum deviation from our exptl. results are 0.88% and 2.10%, resp. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Electric Literature of C20H40O2).

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Electric Literature of C20H40O2

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

Production of bio-oil from algal biomass and its upgradation to biodiesel using CaO-based heterogeneous catalysts was written by Malpani, M.;Varma, A. K.;Mondal, P.. And the article was included in International Journal of Green Energy in 2016.COA of Formula: C20H40O2 The following contents are mentioned in the article:

The present article deals with the production of bio-oil from algal biomass as well as the preparation and characterization of noble CaO-based heterogeneous catalyst for upgradation of bio-oil to biodiesel. The bio-oil has been extracted from algal biomass using hexane as solvent in soxhlet apparatus and upgraded to biodiesel by transesterification using noble CaO-based heterogeneous catalysts. Catalyst with TiO₂:CaO molar ratio of 0.25 and calcination temperature of 700°C has been found to be most suitable among all the catalysts developed. Characterization of the catalysts has been done by using X-ray diffraction (XRD), scanning electron microscope (SEM), and thermo-gravimetric anal. (TGA). The input–output model has been developed to correlate exptl. and predicted value of biodiesel yield. Optimization of process parameters has been done using response surface methodol. Various properties and elemental composition of algal bio-oil and biodiesel have been determined and compared with biodiesel. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8COA of Formula: C20H40O2).

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.COA of Formula: C20H40O2

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

Extraction of extracellular lipids from chemoautotrophic bacteria Serratia sp. ISTD04 for production of biodiesel was written by Bharti, Randhir K.;Srivastava, Shaili;Thakur, Indu Shekhar. And the article was included in Bioresource Technology in 2014.Application of 1731-94-8 The following contents are mentioned in the article:

A CO₂ sequestering bacterial strain, Serratia sp. ISTD04, that produces a significant amount of extracellular lipids was isolated from marble mine rocks. ¹⁴C labeling anal. revealed that the rate of assimilation of CO₂ by the strain is 0.756 × 10^-9 μmol CO₂ fixed cell^-1 h^-1. It was found to produce 466 mg/l of extracellular lipid which was characterized using ¹H NMR. After transesterification of lipids, the total saturated and unsaturated FAME was found to be 51% and 49% resp. The major FAME contained in the biodiesel were palmitic acid Me ester (C16:0), oleic acid Me ester (C18:1) and 10-nonadecenoic acid Me ester (C19:1). Biodiesel produced by Serratia sp. ISTD04 is balanced in terms of FAME composition of good quality. It also contained higher proportion of oleic acid (35%) which makes it suitable for utilization in existing engines. Thus, the strain can be harnessed com. to sequester CO₂ into biodiesel. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Application of 1731-94-8).

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.Application of 1731-94-8

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

Conversion of lipids from wet microalgae into biodiesel using sulfonated graphene oxide catalysts was written by Cheng, Jun;Qiu, Yi;Zhang, Jie;Huang, Rui;Yang, Weijuan;Fan, Zhentao. And the article was included in Bioresource Technology in 2017.Recommanded Product: Methyl nonadecanoate The following contents are mentioned in the article:

Four solid acid catalysts including graphene oxide (GO), sulfonated graphene oxide (SGO), sulfonated graphene (SG), and sulfonated active carbon (SAC) were used to convert lipids in wet microalgae into biodiesel. The physiochem. properties of the catalysts were characterized with scanning electron microscope, X-ray diffraction, and thermogravimetric anal. SGO provided the highest conversion efficiency (84.6% of sulfuric acid) of lipids to fatty acid Me esters (FAME). Whereas SAC converted few lipids into FAME. Fourier transform IR spectroscopy, XPS, and elemental anal. revealed that much higher hydrophilic hydroxyl content in SGO catalyst resulted in a considerable higher conversion efficiency of lipids to FAME than that (48.6%) catalyzed by SG, although SO₃H groups (0.44 mmol/g) in SGO were less than those (1.69 mmol/g) in SG. Given its higher SO₃H group content than GO (0.38 mmol/g), SGO had higher conversion efficiency than GO (73.1%), when they had similar hydrophilic hydroxyl contents. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Recommanded Product: Methyl nonadecanoate).

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.Recommanded Product: Methyl nonadecanoate

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

A comparison study of extraction methods for bio-liquid via hydrothermal carbonization of food waste was written by Bang, YeJin;Choi, Minseon;Bae, Sunyoung. And the article was included in Analytical Science & Technology in 2018.Formula: C20H40O2 The following contents are mentioned in the article:

The hydrothermal carbonization method has received great attention because of the conversion process from biomass. The reaction produces various products in hydrochar, bio-liquid, and gas. Even though its yield cannot be ignored in amount, it is difficult to find research papers on bio-liquid generated from the hydrothermal carbonization reaction of biomass. In particular, the heterogeneity of feedstock composition may make the characterization of bio-liquid different and difficult. In this study, bio-liquid from the hydrothermal carbonization reaction of food wastes at 230 °C for 4 h was investigated. Among various products, fatty acid Me esters were analyzed using two different extraction methods: liquid-liquid extraction and column chromatog. Different elutions with various solvents enabled us to categorize the various components. The eluents and fractions obtained from two different extraction methods were analyzed by gas chromatog. with a mass spectrometer (GC/MS). The composition of the bio-liquid in each fraction was characterized, and seven fatty acid Me esters were identified using the library installed in GC/MS device. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Formula: C20H40O2).

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Formula: C20H40O2

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

Synthesis and characterization of Ca/SBA-15 solid base catalyst and its application in biodiesel production via waste cooking oil was written by Hou, Qian-fen;Zhang, Qian-qian;Guo, Hua-rong;Li, Ling. And the article was included in Huaxue Yu Shengwu Gongcheng in 2015.Computed Properties of C20H40O2 The following contents are mentioned in the article:

Ca/SBA-15 Solid base catalyst was prepared by sol-gel method, using tetra-Et orthosilicate as silicon source, calcium acetate as calcium source and P123 as template agent. The related physicochem. properties of the catalyst were characterized by XRD, FTIR, TEM and N₂ adsorption-desorption isotherms. Then it was used in the transesterification reaction of waste cooking oil and methanol to produce biodiesel. Results showed that, catalyst 0.2Ca/SBA-15-700 with Ca/Si molar ratio of 0.2, calcined at 700°C exhibited the best catalytic activity, which could well maintain the original two-dimensional hexagonal order mesoporous structure and had a BET sp. surface area of 406.7 m²·g^-1. The yield of biodiesel could reach 94.7% under the optimum conditions of methanol/oil molar ratio of 12, catalyst dosage of 5%, reaction temperature of 65°C and reaction time of 7 h in N₂ atmosphere. After being washed and dried, the catalyst could be directly reutilized in the next circle without reactivation. After the fifth circle, the catalytic activity decreased but the yield of biodiesel was still above 86%. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Computed Properties of C20H40O2).

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.Computed Properties of C20H40O2

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

Chemical modification of montan resin by peracetic acid and agricultural application of its modified products was written by Zhang, Hui-Fen;Qin, Hao;Li, Bao-Cai;Qin, Yi;Wang, Huan-Hong;Zhang, Bing;Zhang, Mi. And the article was included in Journal of the Air & Waste Management Association in 2020.Product Details of 1731-94-8 The following contents are mentioned in the article:

This study attempted to chem. modify MR using the oxidation of peracetic acid, resulting that the MR hydrophilicity was significantly improved, and a water-soluble product (WSP) was obtained. The optimized oxidation conditions of MR, including the reaction temperature (X1), reaction time (X2), weight ratio of oxidant and montan resin (X3), and oxidant concentration (X4), were determined using single-factor experiments and response surface anal. The modification degree was evaluated using elemental and oil-water partition coefficient analyses, IR (IR) spectroscopy, and gas chromatog.-mass spectrometry (GC-MS), revealing that the oil-water partition coefficient of the modified product decreased and that the number of chem. constituents with oxygen-containing functional groups clearly increased after modification. Furthermore, the WSP was tested its effects on germination and seedling growth of the wheat seed. Compared with the control group, the WSP showed a promoting effect on the growth and germination of wheat. The WSP concentrations of 600 mg·L-1 and 300 mg·L-1 had the most substantial effect on the root and seedling growth of wheat, resp. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Product Details of 1731-94-8).

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.Product Details of 1731-94-8

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

Long-chain syn-1-phenylalkane-1,3-diyl diacetates, related phenylalkane derivatives, and sec-alcohols, all possessing dominantly iso-branched chain termini, and 2/3-methyl-branched fatty acids from Primula veris L. (Primulaceae) wax was written by Radulovic, Niko S.;Zivkovic Stosic, Milena Z.. And the article was included in Phytochemistry (Elsevier) in 2021.Computed Properties of C20H40O2 The following contents are mentioned in the article:

Herein, the results of the first study of non-flavonoid constituents of aboveground surface-wax washings of Primula veris L. (Primulaceae) are presented. Chromatog. of the washings yielded a minor fraction composed of n-, iso-, and anteiso-series of long-chained syn-1-phenylalkane-1,3-diyl diacetates, 3-oxo-1-phenylalkan-1-yl acetates, 1-phenylalkane-1,3-diones, 1-hydroxy-1-phenylalkan-3-ones, sec-alcs. (2- to 10-alkanols), and n-, iso-, anteiso-, 2-methylalkanoic and 3-methylalkanoic acids; 118 of these constituents represent up to now unreported natural compounds The structural/stereochem. elucidation was accomplished by the synthesis of authentic standards, derivatization reactions, the use of gas chromatog. retention data and detailed 1D and 2D-NMR analyses of the obtained complex chromatog. fraction. Primula veris produces unusually high amounts of branched long-chained metabolites (>60%) except for the fatty acids where the percentage of branched isomers is comparable to the ones with n-chains. Noteworthy is the fact that long-chained α- and β-Me substituted fatty acids were detected herein for the first time in the kingdom Plantae. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Computed Properties of C20H40O2).

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Polyesters are important plastics, with monomers linked by ester moieties. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.Computed Properties of C20H40O2

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

Generating biocrude from partially defatted Cryptococcus curvatus yeast residues through catalytic hydrothermal liquefaction was written by Bi, Zheting;Zhang, Ji;Zhu, Zeying;Liang, Yanna;Wiltowski, Tomasz. And the article was included in Applied Energy in 2018.Recommanded Product: 1731-94-8 The following contents are mentioned in the article:

Research and development on hydrothermal liquefaction (HTL) of wet microbial biomass have been on a dramatic rise. Although microalgae have been the main feedstocks, investigations of HTL of yeast species were few, not to mention yeast biomass cultivated on cellulosic hydrolyzates. In this study, six catalysts were tested regarding their effects on yields of biocrude and biochar from partially defatted Cryptococcus curvatus. Among the six, K₂CO₃ at 350 and 300°C and KOH at 350⁰C led to the highest yield of biocrude, 68.9%, 63.9% and 67.0%, resp. These biocrudes had low content of sulfur and nitrogen but high HHVs in the range of 36.9 and 39.0MJ/kg. The biocrudes from the top three running conditions were dominated by fatty acids and fatty acid esters based on GC/MS identification. The corresponding aqueous phase samples contained high concentrations of fatty acids among all that were identifiable. The successful HTL of the partially defatted yeast cell residues promises a platform where lignocellulosic sugars can be converted to biodiesel from yeast cell lipids and biocrude from the remaining yeast cells. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Recommanded Product: 1731-94-8).

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.Recommanded Product: 1731-94-8

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