Exploring the mechanism of hypochlorous acid decomposition in aqueous solutions

2019 ◽  
Vol 21 (35) ◽  
pp. 19342-19348 ◽  
Author(s):  
Michael Busch ◽  
Nina Simic ◽  
Elisabet Ahlberg
Keyword(s):  
Aqueous Solutions ◽  
Hypochlorous Acid ◽  
Acid Decomposition

The fundamental chemistry of hypochlorous acid in water is explored and mechanisms for the decomposition to either chlorate or oxygen are proposed.

Environmental Friendly Surface Treatment of SBS Rubber with Acidified Chloramine T Aqueous Solutions

2007 ◽  
Vol 80 (1) ◽  
pp. 139-158 ◽  
Author(s):  
M. Virtudes Navarro-Bañón ◽  
M. Mercedes Pastor-Blas ◽  
José Miguel Martín-Martínez
Keyword(s):  
Aqueous Solutions ◽  
Surface Treatment ◽  
Hypochlorous Acid ◽  
Surface Modifications ◽  
Adhesion Properties ◽  
Near Surface ◽  
Environmental Friendly ◽  
Water Based ◽  
Rubber Surface ◽  
Chloramine T

Abstract As environmental friendly alternative to the halogenation treatment with trichloro isocyanuric acid solutions in organic solvents (TCI/MEK), in this study a water-based surface treatment for rubber materials based in chloramine T aqueous solutions has been proposed. It was found that the effectiveness of chloramine T (CT) (N-chloro-sodium-p-toluenesulphenamide) as chlorinating agent for rubber depends on the pH of the chlorinating solution. The surface modifications and adhesion in one SBS rubber treated with aqueous solutions of CT has been studied. Acidification of CT aqueous solutions produced the formation of dichloramine T (DCT) and hypochlorous acid (HClO), species which reacted with C = C bonds of the butadiene units. A decrease in the pH of the CT aqueous solutions produced more extended surface modifications and improved adhesion properties in the joints produced with chlorinated SBS rubber and waterborne polyurethane adhesive. T-peel strength values obtained were slightly lower than those obtained for the SBS rubber surface treated with the organic solvent chlorinating system (TCI/MEK). The solvent effect leading to local swelling and therefore to deeper modifications in the rubber near surface properties was not present with water based solutions, and then, the modifications were much more superficial. On the other hand, acidification with hydrochloric acid produces deposition of NaCl crystals on the SBS rubber surface. Thus, acidification of the chloramines T solution with sulfuric acid was preferable.

Hypochlorous acid decomposition in the pH 5-8 region

1992 ◽  
Vol 31 (17) ◽  
pp. 3534-3541 ◽  
Author(s):  
Luke C. Adam ◽  
Istvan Fabian ◽  
Kazunori Suzuki ◽  
Gilbert Gordon
Keyword(s):  
Hypochlorous Acid ◽  
Acid Decomposition

EXPERIMENTS ON THE PHOTOLYSIS OF AQUEOUS SOLUTIONS OF CHLORINE, HYPOCHLOROUS ACID, AND SODIUM HYPOCHLORITE

1949 ◽  
Vol 27b (4) ◽  
pp. 318-331 ◽  
Author(s):  
K. W. Young ◽  
A. J. Allmand
Keyword(s):  
Aqueous Solutions ◽  
Quantum Efficiency ◽  
Sodium Hypochlorite ◽  
Hypochlorous Acid ◽  
Wide Range ◽  
Reaction Schemes

The photodecompositions of aqueous solutions of chlorine, hypochlorous acid, and sodium hypochlorite have been studied under a variety of conditions involving a wide range of pH, with particular attention paid to the quantum efficiency and to the proportions of the products. Reaction schemes are suggested to account for the results.

Voltametric study of chlorine using a rotating gold disc electrode

1988 ◽  
Vol 53 (3) ◽  
pp. 487-496
Author(s):  
Přemysl Beran ◽  
Karel Micka ◽  
Vu Thi Gái
Keyword(s):  
Reaction Mechanism ◽  
Aqueous Solutions ◽  
Hypochlorous Acid ◽  
Acetate Buffer ◽  
Disc Electrode ◽  
Voltammetric Method ◽  
Kinetics Of Hydrolysis ◽  
Kinetics Of ◽  
Hydrolysis Of

The kinetics of hydrolysis of chlorine in acidic aqueous solutions was studied by the voltammetric method using a rotating gold disc electrode. The voltammetric curves consist of two waves, of which the more negative corresponds to reduction of hypochlorous acid and the more positive to reduction of chlorine. The wave of chlorine increases with the concentration of H+ and Cl- ions and has a kinetic character; in acetate buffer (pH 3.6) its behaviour approaches best the theory of kinetic-controlled waves. The corresponding dependences on the concentrations of H+ and Cl- ions, however, show some anomalies suggesting complications in the reaction mechanism.

Gibberellic acid decomposition and its loss of biological activity in aqueous solutions

1996 ◽  
Vol 41 (3) ◽  
pp. 675-679 ◽  
Author(s):  
Francisco J. Pérez ◽  
Andrea Vecchiola ◽  
Manuel Pinto ◽  
Eduardo Agosin
Keyword(s):  
Biological Activity ◽  
Gibberellic Acid ◽  
Aqueous Solutions ◽  
Acid Decomposition

ChemInform Abstract: Hypochlorous Acid Decomposition in the pH 5-8 Region.

ChemInform ◽  
2010 ◽  
Vol 23 (48) ◽  
pp. no-no
Author(s):  
L. C. ADAM ◽  
I. FABIAN ◽  
K. SUZUKI ◽  
G. GORDON
Keyword(s):  
Hypochlorous Acid ◽  
Acid Decomposition

Ultrathin frozen sections of yeast without aldehyde prefixation

1978 ◽  
Vol 36 (2) ◽  
pp. 58-59
Author(s):  
K. J. Böhm ◽  
a. E. Unger
Keyword(s):  
Aqueous Solutions ◽  
Biological Material ◽  
Yeast Cells ◽  
Frozen Sections ◽  
Good Preservation ◽  
Ultrathin Frozen Sections

During the last years it was shown that also by means of cryo-ultra-microtomy a good preservation of substructural details of biological material was possible. However the specimen generally was prefixed in these cases with aldehydes.Preparing ultrathin frozen sections of chemically non-prefixed material commonly was linked up to considerable technical and manual expense and the results were not always satisfying. Furthermore, it seems to be impossible to carry out cytochemical investigations by means of treating sections of unfixed biological material with aqueous solutions.We therefore tried to overcome these difficulties by preparing yeast cells (S. cerevisiae) in the following manner:

Imaging polymers, proteins and dna in aqueous solutions with the atomic force microscope

1989 ◽  
Vol 47 ◽  
pp. 32-33
Author(s):  
S.A.C. Gould ◽  
B. Drake ◽  
C.B. Prater ◽  
A.L. Weisenhorn ◽  
S.M. Lindsay ◽  
...  
Keyword(s):  
Amino Acids ◽  
Dna Sequencing ◽  
Aqueous Solutions ◽  
Atomic Force Microscope ◽  
Piezoelectric Crystal ◽  
Atomic Force ◽  
Structure Of Molecules ◽  
Optical Lever

The atomic force microscope (AFM) is an instrument that can be used to image many samples of interest in biology and medicine. Images of polymerized amino acids, polyalanine and polyphenylalanine demonstrate the potential of the AFM for revealing the structure of molecules. Images of the protein fibrinogen which agree with TEM images demonstrate that the AFM can provide topographical data on larger molecules. Finally, images of DNA suggest the AFM may soon provide an easier and faster technique for DNA sequencing.The AFM consists of a microfabricated SiO2 triangular shaped cantilever with a diamond tip affixed at the elbow to act as a probe. The sample is mounted on a electronically driven piezoelectric crystal. It is then placed in contact with the tip and scanned. The topography of the surface causes minute deflections in the 100 μm long cantilever which are detected using an optical lever.

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