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Showing 1 to 13 of 13 for “"butyl acetate"”.
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An attempt to relate the surface tension to the concentration and the degree of polymerization of nitrocellulose dissolved in n-butyl acetate
… of nitrocellulose solutions of normal butyl acetate as determined by the Du Nouy method. It should be noted that no great precision is present in the recorded data. A slight change in surface tension due to a difference in the degree of polymerization could easily be more than offset by …
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Heterologous expression of alcohol acetyltransferase genes in Escherichia coli and Clostridium acetobutylicum for the production of esters
… genes in Escherichia coli and Clostridium acetobutylicum for the production of the esters isoamyl acetate, butyl acetate and butyl butyrate. Isoamyl acetate, butyl acetate and butyl butyrate are esters that confer a fruity aroma and taste to the materials in which they are found. AATases are a …
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Simultaneous Degradation of Toxic and Volatile Substrates by Two Phase Partitioning Bioreactor Systems: Performance Characterization and Rational Polymer Selection
… in the simultaneous degradation of phenol and butyl acetate, two substrates known for their relatively high levels of toxicity and volatility, respectively. The solid-liquid TPPB, using 2 polymers selected heuristically, showed an improvement of 40 and 54 % in phenol degradation rates compared …
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Correlation of the distribution curve with the dispersion curve of cellulose nitrate
… may be obtained over a 1ow frequency range in h-butyl acetate. The parallel resistance method is used for capacitance measurements is a nickel cell. Comparison of the distribution curve and the dispersion curve above a distinct similarity between the two curves. A relationship of the log …
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Dielectric dispersion of ethyl cellulose solutions
… determination of molecular weight of cellulose acetate in solution. The applicability of the dielectric dispersion method to other cellulosics was the next step in the development of this new procedure. Ethyl celluloee fractions were refractionated by a fractional precipitation procedure in …
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A study of various nucleophiles in aromatic SRN1 reactions
… 2-benzyl-4,4-dimethyl-2-oxazoline, ethyl phenylacetate, t-butyl acetate, N,N-dimethylacetamide and dimethyl methylphosphonate underwent reactions with both 2-bromopyridine and iodobenzene in an S<sub>R</sub><sub>N</sub>1 manner to give yields of good substitution products. The …
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Scope and stereochemistry of carbon-carbon bond formation via addition of carbon nucleophiles to nitrones
… reagents and the silyl ketene acetal of t-butyl acetate. However, similar additions of carbon nucleophiles to 4-t-butyl-2,3,4,5-tetrahydropyridine N-oxide afforded only the trans isomer from axial addition in moderate yields (60-68%). The stereoselectivity in these endocyclic nitrone …
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Estudio analítico de compuestos volátiles en vino: caracterización quimiométrica de distintas denominaciones de origen
… to 12 compounds present in wine: 3-methyl-butyl acetate (A3M1B), 3-methyl-1-butanol (3M1B), ethyl hexanoate (HE), hexanol (1H), ethyl octanoate (OE), diethyl succinate (SD), phenyl ethyl acetate (AFE), hexanoic acid (AH), geraniol (G), phenyl ethyl alcohol (2FE), octanoic acid (AO), …
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Characterization of the Plant CXE Carboxylesterase Family
… II enzymes preferring short acyl chain esters (acetate to butyrate), while the two clade lV enzymes prefer mid to longer acyl chain esters (heptanoate to laurate). A large number of volatile esters commonly found in plants can be hydrolyzed by these CXEs. Substrates utilized range from simple …
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Automatic Generation of Chemical Kinetic Models for Biofuel Oxidation and Pyrolysis
… applied to model less-studied biofuels, such as butyl acetate isomers and tetramethylethylene. By incorporating key kinetic parameters from literature and quantum chemical calculations, along with iteratively refined thermochemistry, the developed models demonstrate strong predictive …
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Formation of Copper-Salivary Component Complexes and Its Effect on Sensory Perception
… headspace concentration of volatiles (hexanal, butyl acetate, 2-heptanone, and ethyl hexanoate, 0.5 microL/L each) at pH 6.5, but no change in volatility was observed at pH 7.0. At pH 7.5, presence of copper in the artificial saliva decreased headspace volatile concentration. Effect of copper on …
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Multiphase, Multicomponent Systems: Divalent Ionic Surfactant Phases and Single-Particle Engineering of Protein and Polymer Glasses
… rates of NaCl solutions into octanol and butyl acetate up to the point of NaCl crystallization. The dehydration of protein solutions (lysozyme or bovine serum albumin) results in glassified microbeads with less than a monolayer of water coverage per protein molecule, which can be …
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Association Between Smoking, Chemical Exposure and Hearing Loss in an Occupational Setting
Objective: Twenty-two million Americans or roughly 8% of the population are hearing impaired. This affects more than just the ability for one to hear. In the last three decades, younger Americans have shown a sharp increase in hearing impairment. Hearing loss affects social and emotional well being …