Results 251 to 260 of about 226,875 (303)

Dissociation constants of carboxymethyloxysuccinic acid

Talanta, 1974
The dissociation constants of carboxymethyloxysuccinic acid (CMOS) have been measured at 25 degrees and an ionic strength of 0.1M in sodium perchlorate. The values found were: pK(1) = 2.52, pK(2) = 3.77 and pK(3) = 5.00. CMOS is thus seen to be rather stronger than its isomer citric acid.
C E, Rodriguez, C D, Devine
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The dissociation constant of ammonium nitrate and its dependence on temperature, relative humidity and particle size [PDF]

Atmospheric Environment Part A General Topics, 1993
The dissociation constant of NH4NO3(c, IV) is determined from the evaluation of literature data from a variety of sources. Three different methods of calculation using five independent data sets lead to accurate values of the dissociation constant; these
Mozurkewich, M.
exaly   +1 more source

Dissociation constants of arsenazo III

Talanta, 1986
Commercial samples of Arsenazo III were found to be appreciably impure even after purification as the barium salt. Chromatography on silica gel followed by crystallization yielded a pure sample of the ethanol solvate of the free acid. The dissociation constants of the acid were determined potentiometrically at 25 degrees and I = 0.1 (NaClO(4)).
I, Nemcová, B, Metal, J, Podlaha
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Dissociation constants and structure of ergothioneine

Analytical Biochemistry, 1964
Abstract The structure of ergothioneine was studied from the dependence of ultraviolet spectra on pH and H0. This and the correlation with some model compounds strongly suggests that ergothioneine exists in the form of a dipolar betaine.
B, STANOVNIK, M, TISLER
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Acid Dissociation Constants of Phenylalkanolamines

Journal of Pharmaceutical Sciences, 1962
The acid dissociation constants of phenylephrine, synephrine, and tyramine were investigated by the new spectrophotometric method of Edsall. Epinephrine was studied by a titration and complexation method. It is concluded from analysis of the spectral data that the phenolic function is a stronger acid than the alkylammonium group.
S, RIEGELMAN, L A, STRAIT, E Z, FISCHER
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Degeneracy and Dissociation Constants

Nature, 1940
THE importance of degeneracy in enhancing the stability of radicals such as triphenylmethyl has been emphasized by many authors; for example, Pauling and Wheland1, Ingold2, etc. This being so, it is strange that no relations have been suggested between complexity of degeneracy (which we may define in terms of the number of possible resonating ...
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Dissociation Constants of Polyethyleneamines. II. The Dissociation Constants of Tetraethylenepentamine

The Journal of Physical Chemistry, 1957
Hans B. Jonassen, Fred W. Frey, Anneke Schaafsma   +2 more
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Dissociation constants of some organic acids

Talanta, 1984
Dissociation constants of di(nonylphenyl)dithiophosphoric acid, di(nonylphenyl)phosphoric acid and 9-phenyltetracosansulphuric acid, determined by two methods, are reported.
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Apparent Dissociation Constants of Haloaralkylamines

Journal of Medicinal and Pharmaceutical Chemistry, 1962
S L, SHAPIRO, E S, ISAACS, V, BANDURCO, L, FREEDMAN   +3 more
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Dissociation‐Induced Deformation of Hydrate‐Bearing Silty Sand During Depressurization Under Constant Effective Stress

Geophysical Research Letters, 2021
C F Wei, Jiazuo Zhou, Rongtao Yan
exaly