The Partial Molal Volume of Acetic Acid in Sodium Acetate and in Sodium Chloride Solutions1

1948 ◽  
Vol 70 (2) ◽  
pp. 462-465 ◽  
Author(s):  
Henry E. Wirth
Keyword(s):  
Acetic Acid ◽  
Sodium Chloride ◽  
Sodium Acetate ◽  
Partial Molal Volume ◽  
Molal Volume

scholarly journals Study of Physical Properties for Sodium acetate with Water and Water - Acetone mixtures at Different Temperatures

2017 ◽  
Vol 27 (4) ◽  
Author(s):  
Ahmed Mohammed Abbas ◽  
Zainab Wajdi Ahmed ◽  
Alaa Fadhil Sulaiman ◽  
Issam AbdalKreem AbdalLatif
Keyword(s):  
Sodium Acetate ◽  
Apparent Molal Volume ◽  
Viscosity Data ◽  
Partial Molal Volume ◽  
Molal Volume ◽  
Solvent Interactions ◽  
Acetone Water ◽  
Thermodynamic Activation Parameter ◽  
Different Temperatures ◽  
Apparent Molal Compressibility

In this study binary and ternary solutions are prepared by using the sodium acetate concentrations (0.1, 0.125, 0.2, 0.25, 0.4, 0.5, 0.8, 1 M) in water and acetone –water mixtures .The important parameters such as apparent molal volume, the partial molal volume transfer,  apparent  molal compressibility, free energy of activation of viscous flow and thermodynamic activation parameter (enthalpy and entropy) determined of sodium acetate in water , 20%, 40% ,60% and 80% V/V acetone –water mixtures at 298.15K, 303.15K, and 308.15K from density and viscosity measurements espectively. The limiting apparent molal volumes and experimental slopes were derived from the Masson equation, have been interpreted in terms of solute–solvent and solute–solute interactions  respectively. The viscosity data were analyzed using theJones–Dole equation and the derived parameter B - coefficient has also been interpreted in terms of solute–solvent interactions in the solutions. 

scholarly journals Viscometric study of chitosan solutions in acetic acid/sodium acetate and acetic acid/sodium chloride

2015 ◽  
Vol 133 ◽  
pp. 245-250 ◽  
Author(s):  
Cristiane N. Costa ◽  
Viviane G. Teixeira ◽  
Marcia C. Delpech ◽  
Josefa Virginia S. Souza ◽  
Marcos A.S. Costa
Keyword(s):  
Acetic Acid ◽  
Sodium Chloride ◽  
Sodium Acetate ◽  
Viscometric Study

ROLE OF CALCIUM IN THE RELEASE OF VASOPRESSIN AND OXYTOCIN FROM POSTERIOR PITUITARY PROTEIN

1965 ◽  
Vol 50 (3) ◽  
pp. 357-364 ◽  
Author(s):  
N. A. Thorn
Keyword(s):  
Acetic Acid ◽  
Sodium Chloride ◽  
Calcium Ions ◽  
Magnesium Chloride ◽  
Sodium Acetate ◽  
Blood Stream ◽  
Posterior Pituitary ◽  
Sodium Acetate Buffer ◽  
Protein Solution

ABSTRACT Using film dialysis experiments of crude posterior pituitary protein in 0.1 m acetic acid/sodium acetate buffer (pH 5.6) it was demonstrated that addition of calcium in concentrations of 0.2 or 0.5 mm increased the rate of dialysis of vasopressin activity from the film of protein solution. Sodium chloride, magnesium chloride or acetylcholine had no such effect. Calcium in a concentration of 0.2 mm also increased the rate of dialysis of oxytocin activity from the protein solution. The results seem to support the hypothesis that calcium ions function in the excitation-secretion coupling for vasopressin and oxytocin by releasing hormone peptide from its binding to neurophysin within the neurosecretory nerve endings. Thus the hormone becomes free to diffuse into the blood stream.

Thermal Inactivation of Conidia from Aspergillus flavus and Aspergillus parasiticus

1975 ◽  
Vol 38 (12) ◽  
pp. 750-758 ◽  
Author(s):  
M. P. DOYLE ◽  
E. H. MARTH
Keyword(s):  
Acetic Acid ◽  
Sodium Chloride ◽  
Citric Acid ◽  
Thermal Resistance ◽  
Aspergillus Flavus ◽  
Sodium Acetate ◽  
Thermal Inactivation ◽  
Aspergillus Parasiticus ◽  
Ph Values ◽  
Strain Dependent

Conidiospores from one strain of Aspergillus flavus and two of Aspergillus parasiticus were thermally inactivated in menstrua at pH values of 3.5, 4.5, 5.5, and 6.0. These values were obtained with the following buffering systems: sodium acetate and acetic acid, citric acid and Na2HPO4, potassium acid phthalate (KHP)-HCl and KHP-NaOH, and KH2PO4 and NaOH. Heating of conidia in a menstruum adjusted to pH 7.0 with KH2PO4 and NaOH served as the control. Use of the sodium acetate and acetic acid buffering system resulted in an increase in the rate at which conidia were inactivated when the pH was decreased. Use of the citric acid and Na2HPO4 buffering system resulted in increased thermal resistance for the conidia as the pH was decreased; however, the degree of increased thermal resistance was strain dependent. When the KHP-HCl and KHP-NaOH buffers were used, conidia were inactivated more rapidly than in the control at the higher pH values and more slowly than in the control at the lower pH values. An increase in amount of sodium chloride, sucrose, or glucose in the menstruum was accompanied by a decrease in the rate at which conidia were inactivated. Generally, sodium chloride was markedly protective to conidia at aw values of less than 0.94, whereas the sugars were markedly protective at values below 0.95. Greatest protection at these values was afforded by sucrose.

Synthesis and Caracterization of some New 1H-3-aryl-7-etoxycarbonyl-6-methyl-pyrazolo[5,1-c][1,2,4]triazoles

2008 ◽  
Vol 59 (1) ◽  
pp. 41-44
Author(s):  
Maria-Daniela Sofei ◽  
Maria Ilici ◽  
Valentin Badea ◽  
Carol Csunderlik ◽  
Vasile-Nicolae Bercean
Keyword(s):  
Mass Spectrometry ◽  
Acetic Acid ◽  
Nmr Spectroscopy ◽  
Sodium Acetate ◽  
Glacial Acetic Acid ◽  
Ir And Nmr Spectroscopy

The synthesis of 1H-3-aryl-7-ethoxycarbonyl-6-methyl-pyrazolo[5,1-c][1,2,4]triazoles (2) was carried out by cyclization of 1H-5-arylidenehydrazino-4-ethoxycarbonyl-3-methyl-pyrazoles (1) in the presence of bromine using glacial acetic acid as solvent and sodium acetate as base. The new nine obtained compounds were characterized by IR and NMR spectroscopy and mass spectrometry.

Novel Synthesis of 4-Benzylidene-2-((1-phenyl-3,4-dihydroisoquinoline-2(1H)-yl)methyl) oxazol-5(4H)-one Derivatives Using 1,2,3,Tetrahydroisoquinoline and their Antimicrobial Activity

2020 ◽  
Vol 17 (5) ◽  
pp. 396-403
Author(s):  
Nalla Krishna Rao ◽  
Tentu Nageswara Rao ◽  
Botsa Parvatamma ◽  
Y. Prashanthi ◽  
Ravi Kumar Cheedarala
Keyword(s):  
Antimicrobial Activity ◽  
Antibacterial Activity ◽  
Acetic Acid ◽  
Sodium Acetate ◽  
Good Activity ◽  
Activity Profile ◽  
Aryl Aldehydes ◽  
Chemical Structures ◽  
Novel Synthesis ◽  
Target Molecules

Aims: A series of six 4-benzylidene-2-((1-phenyl-3,4-dihydro isoquinoline-2(1H)-yl)methyloxazol- 5(4H)-one derivatives were synthesized by condensation of substituted aryl aldehydes with 2-(2-(1-phenyl-3,4- dihydro isoquinoline-2(1H)-acetamido)acetic acid in the presence of sodium acetate, acetic anhydride and zinc oxide as catalysts. Background: Novel Synthesis of 4-Benzylidene-2-((1-phenyl-3,4-dihy droisoquinoline-2(1H)-yl)methyl)oxazol- 5(4H)-one derivatives using 1,2,3,Tetrahydroisoquinoline and their antimicrobial activity. Objective: The title compounds can be synthesized from 1,2,3,4-tetrahydroisoquinoline. Methods: The target molecules, i.e., 4-benzylidene-2-((1-phenyl-3, 4-dihydro isoquinoline-2(1H)-yl) methyl) oxazol-5(4H)-one derivatives (8a-8f) have been synthesized from 1,2,3,4-tetrahydroisoquinoline which was prepared from benzoic acid in few steps. Results: All the six compounds were evaluated based on advanced spectral data (1H NMR, 13C NMR & LCMS), and the chemical structures of all compounds were determined by elemental analysis. Conclusion: Antibacterial activity of the derivatives was examined for the synthesized compounds and results indicate that compound with bromine substitution has a good activity profile.

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