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Showing 1 to 20 of 258 for “"chloroform"”.
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Chloroform anaesthesia
As far back as 1796 a group of Dutch chemists produced a dense oily liquid. This was probably ethylene dichloride (CH2C1)2 and it was known as Dutch liquid or chloric ether, remaining for many years a chemical curiosity. Professor Benjamin Silliman, in his Yale College Elements of Chemistry, dated …
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The vapor-liquid equilibrium and related properties of ethanol, chloroform mixtures
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1937.
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A study of the vapour phase pyrolysis and alkaline hydrolysis of chloroform
The decomposition of chloroform at 510˚C was investigated in a continuous flow system, using nitrogen as the carrier gas. The main products of the reaction were hydrogen chloride, tetrachloroethylene, pentachloroethane and hexachloroethane; hydrogen and chlorine could not be detected. Neither the …
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Formation of Chloroform and Other Chlorinated Byproducts by the Chlorination of Antibacterial Products
… 2,4-dichlorophenol, 2,4,6-trichlorophenol, and chloroform. The daughter product yields were found to be highly variable and were dependent on the antimicrobial product investigated, the free chlorine to triclosan ratio, and the temperature at which the study was conducted. Lowering the …
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An assessment of a liquid-liquid extraction procedure for the gas chromatographic analysis of chloroform in algal media
… factors which might alter the analysis of chloroform in aqueous samples by the liquid-liquid extraction (LLE) method developed by Glaze at North Texas State University. A Bendix gas chromatograph (GC) was used. The factors examined were the effect of the ionic strength of the sample on the …
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Hydrogen bonding and solvation dynamics of n-methylacetamide in denatured water (D₂O) or denatured chloroform (CDCl₃) from nonlinear spectroscopy
Hydrogen bonding between N-methylacetamide (NMA) and different solvents (D₂O or CDCl₃) was studied by using two-dimensional infrared spectroscopy to probe the frequency fluctuations of the amide I mode of the solvated NMA. An iterative fitting approach was used to extract a correlation function …
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Changes in Pancreatic and Jejunal Histopatholgy and Serum IFN-γ, TNF-α Levels in Type 1 Diabetes: Role of Chloroform Methanol Soluble Gliadin Proteins
Chloroform methanol (CM) soluble extract of a cereal-based diet has been suggested to induce type 1 diabetes in an experimental animal model of type 1 diabetes. However, the individual constituent of this extract responsible for the disease induction and its disease pathogenesis mechanism remained …
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Trihalomethane formation potential of algal extracellular products and biomass
… products excretion into the medium and of the chloroform produced after chlorination. Similar studies of cell suspensions were conducted. The study also included an analysis of the chloroform yields from chlorinated reservoir sediments and pure compounds known to be algal extracellular …
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Nuclear magnetic resonance studies of molecular interactions and structures
… of benzene and cyclohexane to which either chloroform or deutero-chloroform has been added. The effect of the added polar molecule on the liquid structure has been studied using spin-lattice relaxation time, 1H chemical shift, and nuclear Overhauser effect measurements. The main purpose of …
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A study of the kinetic and thermodynamic properties of carbon acids in methanol
… methoxide-catalyzed hydrogentritium exchange of chloroform, iodoform, 9-phenylfluorene and indene were determined in methanol at various temperatures. The second-order rate constants obtained from these studies were shown to be the rate constants for removal of a triton. The activation parameters …
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Trihalomethane-forming potential of algal extracellular products and biomass
… were analyzed for total organic carbon and chloroform produced after chlorination. Pure solutions of representative algal extracellular metabolites were analyzed in a similar manner. The highest-yielding (chloroform-carbon per total organic carbon) compounds were released during the late …
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Chemosensory properties of different Ulva extracts and their effects on Tripneustes gratilla
… crude extracts of Ulva (Methanolic, Ethanolic, Chloroform and Chloroform-Methanol extracts) were tested by pair-wise chemosensory trials in a Y shaped maze. Urchins were significantly deterred by both the Chloroform and Chloroform- Methanol extracts as well as the solvent controls and artificial …
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Investigation into DNA recovered from human teeth for forensic applications
… quality for generating a DNA profile. The phenol-chloroform DNA extraction method has demonstrated improved, yet inconsistent results, when used on hard tissues. Therefore, this study assessed DNA recovery from 52 human control teeth from three deceased individuals, using an optimised …
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Inkjet printing polymerized pcda as a means of serialization
… Apple smart phone. Usage of purified PCDA in a chloroform solution shows to provide clearly printed Q-R codes which could be read by the application, which proves that the difference in color does not affect the capability of the code to be read. A comparison of the reflection of each color to …
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The Mechanisms, Products, and Kinetics of Triclosan-Free Chlorine Reactions
… 2,4-dichlorophenol, 2,4,6-trichlorophenol, and chloroform formed under excess free chlorine conditions. The majority of the chloroform formed during the reactions does not form via 2,4-dichlorophenol and 2,4,6-trichlorophenol oxidation. Therefore, the majority of chloroform is likely formed via …
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In vitro anti-platelet aggregation activity of the extracts of bulbine natalensis
… was extracted sequentially using hexane, chloroform, ethyl acetate, methanol, and water. The chloroform extract had the highest yield of 0.20%. Phytochemical screening revealed the presence of anthraquinones, cardiac glycosides, saponins, tannins, flavonoids and alkaloids. The hexane …
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