Results 161 to 170 of about 612,546 (214)

Some solvent effects on the solvent extraction of 8-quinolinol

Talanta, 1967
The distribution constants of 8-quinolinol between water and a series of substituted aliphatic hydrocarbons, at 25 degrees , are reported. The results are discussed in terms of dielectric constant and solubility parameter of the solvents. For 8-quinolinol, and possibly for its chelates, bromochloromethane, dibromomethane and chloroform seem to be about
H A, Mottola, H, Freiser
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Side Effects, Solvents, and Co‐Solvents

ChemInform, 2005
AbstractFor Abstract see ChemInform Abstract in Full Text.
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Industrial solvents and psychological effects

Clinics in Occupational and Environmental Medicine, 2004
Organic solvents are widely used in industries for cleaning, degreasing, and other processes. The high dose neurotoxicity of occupational solvents is evident, and the existence of residual effects following lower dose exposure remains a focus of interest 30 years after initial reports of behavioral changes in painters from the Scandinavian literature ...
Chuan Fang, Jin, Marc, Haut, Alan, Ducatman   +2 more
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Solvent effects on the stability of A7U7p

Biochemistry, 1985
The thermodynamics of double-helix formation were measured spectrophotometrically for A7U7 in water at 1 M NaCl and for A7U7p in a variety of solvent mixtures and salt. Comparison of the A7U7 results with calorimetric measurements indicates duplex formation involves intermediate states.
D R, Hickey, D H, Turner
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Solvent effects on dinucleotide conformation

Journal of Molecular Biology, 1972
Abstract The effect of the addition of organic solvents and reagents on the absorption, optical rotatory dispersion and circular dichroism of ApA was investigated. The added reagents were dioxane, ethylene glycol, glycerol, dimethylsulfoxide, trimethylphosphate, guanidine hydrochloride, formamide and tetrahydrofuran.
M J, Lowe, J A, Schellman
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THE PHENOMENOLOGICAL THEORY OF SOLVENT EFFECTS IN MIXED SOLVENT SYSTEMS

ChemInform, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
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Effects of Solvents on Acetylcholine Conformation

Nature, 1966
IN earlier communications1–3 we reported the results of our investigations with acetylcholine and related substances. These led us to conclude that the acetyl group is activated primarily by an inductive influence of the quaternary nitrogen. This conclusion was based in large measure on the carbonyl stretching frequencies which were observed for ...
J H, Fellman, T S, Fujita
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Effect of Solvent on Tetrazolium Reaction

Journal of Pharmaceutical Sciences, 1976
The rate of color development of a tetrazolium formazan is shown to be inversely proportional to the dielectric constant of the solvent medium and directly proportional to the hydrogen-bonding capability of solvent mixtures having the same dielectric constant.
R E, Graham, E R, Biehl, C T, Kenner
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Solvents and Solvent Effects in Organic Chemistry

2002
INTRODUCTION SOLUTE-SOLVENT INTERACTIONS Solutions Intermolecular Forces Solvation Preferential Solvation Micellar Solvation (Solubilization) Ionization and Dissociation CLASSIFICATION OF SOLVENTS Classification of Solvents According to Chemical Constitution Classification of Solvents Using Physical Constants Classification of Solvents in Terms of Acid-
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The solvent effect on the α-effect

J. Chem. Soc., Chem. Commun., 1986
The reaction of p-nitrophenyl acetate with butane-2,3-dione monoximate anion as the α-nucleophile, compared with p-chlorophenoxide ion as the normal nucleophile, exhibits a maximum in rate enhancement (‘α-effect’) in dimethyl sulphoxide–water mixtures as the medium composition is varied.
Erwin Buncel, Ik-Hwan Um
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