Tag: 200-300

High pressure viscosity behaviour of tris(2-ethylhexyl) trimellitate up to 150 MPa was written by Lineira del Rio, Jose M.;Guimarey, Maria J. G.;Comunas, Maria J. P.;Fernandez, Josefa. And the article was included in Journal of Chemical Thermodynamics in 2019.COA of Formula: C15H22O2 The following contents are mentioned in the article:

This article presents a study on the viscous behavior at high pressure of a synthetic oil, tris(2-ethylhexyl) trimellitate. This fluid is being recommended as potential industrial reference material for high viscosity-high pressure measurements. Here we report new exptl. viscosity values for TOTM at temperatures from 278.15 K to 373.15 K and at pressures to 150 MPa with a maximum viscosity of 2570 mPa s. The measurements have been performed using a high pressure falling-body apparatus and a Couette rotational viscometer. The exptl. values obtained in this work are included in the database of a multinational project used recently to develop a reference correlation for TOTM. The universal viscosity-pressure coefficient of this fluid has been evaluated and compared with other oils, finding that it is close to the literature values of mineral oils. Moreover, we perform an anal. of the dependency of viscosity on pressure and temperature based on the d. scaling concept. This study involved multiple reactions and reactants, such as 2-Ethylhexyl benzoate (cas: 5444-75-7COA of Formula: C15H22O2).

2-Ethylhexyl benzoate (cas: 5444-75-7) 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. COA of Formula: C15H22O2

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

Preparation and characterization of β-cyclodextrin nanosponges and study on enhancing the solubility of insoluble nicosulfuron was written by Liu, Xiaofang;Li, Wei;Xuan, Guangshan. And the article was included in IOP Conference Series: Materials Science and Engineering in 2020.Safety of Diphenyl carbonate The following contents are mentioned in the article:

Nicosulfuron (NSF) is a water-insoluble and unstable sulfonylurea herbicide, which is mainly used in the treatment of stems and leaves after the corn seedling stage. Nanosponges (NS) have more interaction sites and higher drug encapsulation capabilities. In this paper, three kinds of β-cyclodextrin nanosponges (CDNS) were prepared by crosslinking β-cyclodextrin with di-Ph carbonate (DPC), pyromellitic dianhydride (PMDA) and epichlorohydrin (EP), resp. The NSF-loaded CDNS were characterized by TEM, FTIR, DSC, TGA and XRD. The solubility, stability and biol. activity of NSF were studied. The results showed NSFEP-CDNS could significantly enhance the solubility of NSF. In vitro release test, the cumulative release of NSF-EP-CDNS was 90.11%. Compared with pure NSF and NSF oil suspension, NSF-EP-CDNS had the strongest inhibitory effect on acetolactate synthase (ALS). In conclusion, CDNS have beneficial effects on the solubility, stability and biol. activity of NSF. This study involved multiple reactions and reactants, such as Diphenyl carbonate (cas: 102-09-0Safety of Diphenyl carbonate).

Diphenyl carbonate (cas: 102-09-0) 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. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.Safety of Diphenyl carbonate

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

Sex pheromone of the sugarcane shoot borer, Tetramoera schistaceana Snellen (Lepidoptera:Tortricidae:Olethreutinae). Isolation and identification was written by Kinjo, Mieko;Nagamine, Masaaki;Sugie, Hajime;Tamaki, Yoshio. And the article was included in Nippon Oyo Dobutsu Konchu Gakkaishi in 1996.COA of Formula: C14H24O2 The following contents are mentioned in the article:

The structure of the sex pheromone of the most important sugarcane pest, sugarcane shoot borer, T. schistaceana was determined to establish an integrated method of controlling this pest. The sex pheromone was extracted from the abdominal tips of virgin females. Using laboratory bioassay in a small flight tunnel, 2 active components of the sex pheromone were isolated. The major and minor components were identified as (Z)-9-dodecenyl acetate and (E)-9,11-dodecadienyl acetate, resp. The major component alone had no attractivity but a mixture of the 2 components showed strong activity in sugarcane fields. The sex pheromone of T. schistaceana was determined to be a 100:1 mixture of (Z)-9-dodecenyl acetate and (E)-9,11-dodecadienyl acetate. The synergist increasing the attractivity of the sex pheromone was (E)-7,9-decadienyl acetate. The best formulation for the sex attractant was a mixture of the 2 pheromone components and the synergist at a ratio of 1000:10:1. This study involved multiple reactions and reactants, such as (E)-Dodeca-9,11-dien-1-yl acetate (cas: 50767-78-7COA of Formula: C14H24O2).

(E)-Dodeca-9,11-dien-1-yl acetate (cas: 50767-78-7) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.COA of Formula: C14H24O2

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

Chemical substitution in processes for inherently safer design: pros and cons was written by Khan, Easir A.;Syeda, Sultana R.. And the article was included in Pure and Applied Chemistry in 2022.Synthetic Route of C13H10O3 The following contents are mentioned in the article:

The aim of chem. substitution is to replace hazardous chems. with a less hazardous alternative in a certain product or process to make it safer for human health and the environment. While a lot has been done by researchers, industries and regulatory bodies on chem. substitution for safer products, very little has been reported in the field of safer processes. On the other hand, chem. substitution is one of the core principles of inherently safer design, a concept frequently used in the chem. industry for the prevention of major accidents. This work presents an anal. of implementing chem. substitution methodol. for safer processes through inherently safer design. Chem. industries, nowadays, are frequently asked to phase out hazardous chems. from their processes. This paper provides an insight into the issues and practicability of chem. substitution in processes with the help of case studies and a review of the existing frameworks of inherently safer design. This study involved multiple reactions and reactants, such as Diphenyl carbonate (cas: 102-09-0Synthetic Route of C13H10O3).

Diphenyl carbonate (cas: 102-09-0) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.Synthetic Route of C13H10O3

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

Determination of double-bond position in diunsaturated compounds by mass spectrometry of dimethyl disulfide derivatives was written by Vincent, Marco;Guglielmetti, Gianfranco;Cassani, Giorgio;Tonini, Cristina. And the article was included in Analytical Chemistry in 1987.Related Products of 50767-78-7 The following contents are mentioned in the article:

A method for determining the double-bond location in 24 diunsatd. compounds was examined The diene system is reacted with Me₂S₂ and a stoichiometric amount of iodine in CS₂ (or without solvent). The derivatization leads to either linear or cyclic polythioethers, depending on the number of CH₂ groups separating the 2 double bonds. The mass spectra of the derivatization products show fragmentation which is strongly influenced by the sulfurated groups introduced, so that the original position of the double bonds is easily deduced. Only conjugated dienes give derivatives with scarcely meaningful mass spectra. The derivatization has a moderate anti stereoselectivity when cyclic polythioethers are obtained, since several diastereomers can be distinguished by gas chromatog. No conclusive statement is possible about the stereochem. of the derivatization leading to linear polythioethers, where a different reaction mechanism is observed This study involved multiple reactions and reactants, such as (E)-Dodeca-9,11-dien-1-yl acetate (cas: 50767-78-7Related Products of 50767-78-7).

(E)-Dodeca-9,11-dien-1-yl acetate (cas: 50767-78-7) 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. 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.Related Products of 50767-78-7

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

Qualitative and semi-quantitative analysis of specific aroma in Ampelopsis grossedentata based on HS-SPME/GC-MS was written by Shen, Dong;Shen, Qiang;Pan, Ke;Zheng, Wen-jia. And the article was included in Guizhou Nongye Kexue in 2010.Synthetic Route of C15H22O2 The following contents are mentioned in the article:

The specific aroma components of Ampelopsis grossedentata were qual. and semi-quant. analyzed by HS-SPME/GC-MS based on optimization of sample dosage, extraction temperature, extraction time, balanced time and desorption time to provide theor. basis for further development of Ampelopsis grossedentata. The results showed that the optimum HS-SPME conditions were 0.5 g sample dosage, 50°C, 50 min extraction time, 10 min balanced time, 2.5 min absorption time. The specific aroma components were nonanal, decanal, cis-geranylacetone, 6,10,14-trimethyl-2-pentadecanone, di-Et phthalate, phthalic acid, diisobutyl ester, 2,6-bis(1,1-dimethylethyl)-4-methyl-phenol, 2,4-bis(1,1-dimethylethyl)-phenol, β-ionone, 1,1,3-trimethyl-3-phenyl-indane and (R)-5,6,7,7a-tetrahydro-4,4,7a-trimethyl-2(4H)-benzofuranone. The HS-SPME/GC-MS with less sample dosage, reliability, simplicity and rapidity can be used in qual. and semi-quant. anal. of Ampelopsis grossedentata specific aroma components. This study involved multiple reactions and reactants, such as 2-Ethylhexyl benzoate (cas: 5444-75-7Synthetic Route of C15H22O2).

2-Ethylhexyl benzoate (cas: 5444-75-7) 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. 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.Synthetic Route of C15H22O2

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

Sex pheromones of two noctuid moths was written by Nesbitt, Brenda F.;Beevor, P. S.;Cole, R. A.;Lester, R.;Poppi, R. G.. And the article was included in Nature (London), New Biology in 1973.Synthetic Route of C14H24O2 The following contents are mentioned in the article:

The attractant scent in Diparopsis castanea consisted of 1-dodecyl acetate (I), trans-9-decen-1-yl acetate (II), 11-dodecen-1-yl acetate (III), and trans-9,11-dodecadien-1-yl acetate (IV). Electroantennogram responses of the male moths were in the order: IV ≫ II > III ≫ I. In laboratory trap tests, only IV was slightly attractive at low loadings. The addition of 20-30% III greatly enhanced the attractiveness of IV. The female Spodoptera littoralis sex scent consisted of 1-tetradecyl acetate (V), cis-9-tetradecen-1-yl acetate (VI), trans-11-tetradecen-1-yl acetate (VII), and cis-9,trans-11-tetradecadien-1-yl acetate (VIII). Electroantennogram responses of the male moths were in the order: VIII > VI ≫ VII > V. In laboratory trap testing, the natural proportions of V, VI, VII, and VIII were attractive. Brushes of the male S. littoralis located near the abdominal tip contained VIII. S. littoralis females gave electroantennogram responses to V, VI, VII, and VIII. This study involved multiple reactions and reactants, such as (E)-Dodeca-9,11-dien-1-yl acetate (cas: 50767-78-7Synthetic Route of C14H24O2).

(E)-Dodeca-9,11-dien-1-yl acetate (cas: 50767-78-7) 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.Synthetic Route of C14H24O2

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

The effects of alpha irradiation on the optical reflectivity of composite polymers was written by Chavan, Vivek;Kulkarni, Atul;Lee, Sang-Deok;Kanade, Vinit;Lee, Dongmok;Kim, Hyeong-U.;Kim, Do Yoon;Kim, Taesung;Bhoraskar, Sudha;Bhoraskar, V. N.;Hong, Seung-Woo. And the article was included in Radiation Physics and Chemistry in 2022.Safety of 1,1,1,3,3,3-Hexafluoroisopropylmethacrylate The following contents are mentioned in the article:

This paper reports an increase in the optical reflectivity of two kinds of copolymers used in contact lenses, with different proportions of silicon and fluorine derivatives, when irradiated with 4.1 MeV alpha particles from an 241Am source. The fiber-optic reflectance technique showed that the lens with a higher proportion of silicon and fluorine content and a lower proportion of methyl-methacrylate is more susceptible to alpha radiation. XPS and Raman spectroscopy have revealed the formation of silicon oxide and carbide species as a result of chain scission and recombination in the 20μm thick irradiated regions of lens materials. It is presumed that the high (260 eV/nm) linear energy transfer of alpha particles in polymers creates trapped gas ”Bubbles”’, and the observed increase in the optical reflectivity with increased irradiation time is explained on the basis of diffuse reflectance caused by the scattering of light from the hard surfaces of these ”Bubbles”. This study involved multiple reactions and reactants, such as 1,1,1,3,3,3-Hexafluoroisopropylmethacrylate (cas: 3063-94-3Safety of 1,1,1,3,3,3-Hexafluoroisopropylmethacrylate).

1,1,1,3,3,3-Hexafluoroisopropylmethacrylate (cas: 3063-94-3) 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. 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.Safety of 1,1,1,3,3,3-Hexafluoroisopropylmethacrylate

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

Quick determination with gas chromatography-mass spectrometry on 15 aromatic-nitro-components and phthalates in air of workplace was written by Chen, Jian-gang;Tan, Ai-jun;Zhang, Cai-hong;Huang, Hui-tao. And the article was included in Zhongguo Zhiye Yixue in 2008.Product Details of 5444-75-7 The following contents are mentioned in the article:

The objective of this paper is to establish the method for rapid determination of 15 kinds of aromatic nitro compounds and phthalate esters in the workplace air. Various target mixtures in air collected by silicone tube and DB-35ms separation column and gas chromatog.-mass spectrometry are used in the determination and anal. of compounds after desorption by methanol. The results showed that all composition are completely separated, at the same time, qual. determination is performed. Fifteen kinds of mixture shows good linear relationship in certain concentration range, correlation coefficient (r) ≥ 0.990 0. The min. detection limit is far lower than the dosage level of occupational chem. poisoning position, desorption efficiency of 15 kinds of mixture is 92-97%. It was concluded that this method has high selectivity, sensitivity and accuracy, which can satisfy the rapid qual. and quant. determination of 15 kinds of nitro compounds and phthalate esters mixture in the workplace air. This study involved multiple reactions and reactants, such as 2-Ethylhexyl benzoate (cas: 5444-75-7Product Details of 5444-75-7).

2-Ethylhexyl benzoate (cas: 5444-75-7) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. 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.Product Details of 5444-75-7

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

All-organic polymer blend dielectrics of poly(arylene ether urea) and polyimide: Toward high energy density and high temperature applications was written by Ahmad, Aftab;Tong, Hui;Fan, Tao;Xu, Ju. And the article was included in Journal of Polymer Science (Hoboken, NJ, United States) in 2021.Synthetic Route of C13H10O3 The following contents are mentioned in the article:

The development of high-performance dielec. films with high energy d. and temperature stability is extremely desired for modern electronics and power systems. Herein, a simple and low-cost approach is proposed to fabricate all-organic blend films prepared from poly(arylene ether urea) (PEEU) and polyimide (PI) via solution casting and thermal imidization process. The incorporation of PEEU in PI matrix significantly improved dielec. breakdown strength and dielec. constant of PI. More precisely, blend film with 15 weight% PEEU exhibited highest energy d. 5.14 J/cm3 at 495.65 MV/m, with enhanced dielec. constant of 4.73 and very low dissipation factor of 0.299%. Furthermore, the dielec. properties of the PEEU/PI blend displayed wonderful temperature stability in the range of – 50-+ 250°C, and great frequency stability between 10 and 106 Hz. The blend film also exhibited excellent heat resistance and presented valuable potential in thin film capacitors for high voltage d.c. system. This study involved multiple reactions and reactants, such as Diphenyl carbonate (cas: 102-09-0Synthetic Route of C13H10O3).

Diphenyl carbonate (cas: 102-09-0) 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. 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. Synthetic Route of C13H10O3

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