Chemistry is an experimental science, Category: bromides-buliding-blocks, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 14660-52-7, Name is Ethyl 5-bromovalerate, molecular formula is C7H13BrO2, belongs to bromides-buliding-blocks compound. In a document, author is Banipal, Parampaul K..
Physicochemical and spectral evaluation of the interactional behavior of nicotinic acid (vitamin B-3) with mixed [sodium deoxycholate (bile salt) plus cetyltrimethylammonium bromide] surfactants
Aggregation behavior of anionic bio-surfactant; sodium deoxycholate (SDC) and cationic surfactant; cetyltrimethylammonium bromide (CTAB) and their mixtures at different mole fractions, alpha(SDC) = (0.90026, 0.88416, and 0.69438) has been examined in water as well as in aqueous solutions of nicotinic acid at (298.15, 308.15, and 318.15) K by employing various techniques such as conductivity, density, sound velocity, UV-visible spectroscopy, and dynamic light scattering (DLS) studies. From the critical micelle concentration (CMC) and the degree of ionization (alpha) of micelle, thermodynamic parameters {standard Gibbs free energy (), enthalpy (), and entropy () of micellization} have been evaluated and analyzed for surfactants studied in water and in (1, 2, and 3) x 10(-4) mol kg(-1) nicotinic acid((aq)) solutions at (298.15, 308.15, and 318.15) K. The CMC values for both the pure and mixed (SDC + CTAB) surfactants were found to increase with increase in concentration of nicotinic acid. The partial specific volume (phi(v)), isentropic compressibility (kappa(s)), and partial specific isentropic compressibility (phi(kappa)) were estimated from density and speed of sound data. UV-vis absorption spectra of 1 x 10(-4) mol kg(-1) nicotinic acid((aq)) solutions were also recorded in presence of surfactants studied at alpha(SDC) = (0.90026, 0.88416, 0.69438) and T = 298.15 K. Hydrodynamic diameters (D-h) of micellar aggregates for both pure and mixed surfactants were analyzed through the DLS studies performed at 298.15 K. The results from all the studies suggest the supremacy of both hydrophobic and electrostatic interactions between the nicotinic acid and the mixed micellar aggregates. [GRAPHICS] .
Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 14660-52-7, in my other articles. Category: bromides-buliding-blocks.