Measurement of the Rate of Reaction of Potassium Iodide with Organic Chlorides in Dilute Acetone Solution

1944 ◽  
Vol 66 (11) ◽  
pp. 1987-1988 ◽  
Author(s):  
Kenneth L. Senior ◽  
Richard R. Hetrick ◽  
John G. Miller
Keyword(s):  
Potassium Iodide ◽  
Acetone Solution ◽  
Rate Of Reaction

scholarly journals Flavin-photosensitized reactions of retinal and stilbene

1970 ◽  
Vol 120 (4) ◽  
pp. 673-681 ◽  
Author(s):  
Ann Gordon-Walker ◽  
G. K. Radda
Keyword(s):  
Triplet State ◽  
Diethyl Ether ◽  
Potassium Iodide ◽  
Substrate Concentration ◽  
Transition Energies ◽  
Photostationary State ◽  
Rate Of Reaction ◽  
Paramagnetic Ions

1. Retinol and stilbene are both isomerized when they are illuminated anaerobically in the presence of flavins. 2. Triplet quenchers (e.g. oxygen, potassium iodide and paramagnetic ions) inhibit the reaction more efficiently than they quench flavin fluorescence. At 77°C in a diethyl ether–isopentane–ethanol (5:5:2) glass retinol quenches flavin phosphorescence, but not its fluorescence. 3. For the stilbene reaction cis/trans photostationary-state mixtures are obtained with different flavins and these are linearly related to the phosphorescence transition energies of the flavins used. 4. The reaction involves the triplet state of flavin and a scheme for the reaction is suggested. 5. The dependence of the rate of reaction on substrate concentration is explicable in terms of this scheme. 6. The photobleaching of rhodopsin sensitized by flavin is also demonstrated.

scholarly journals The mechanism of the iodination of aminochromes

1967 ◽  
Vol 45 (15) ◽  
pp. 1721-1725 ◽  
Author(s):  
G. L. Mattok ◽  
D. L. Wilson
Keyword(s):  
Potassium Iodide ◽  
Molecular Iodine ◽  
Reactive Species ◽  
Base Catalysis ◽  
Ion Concentration ◽  
Zwitterionic Form ◽  
General Base ◽  
Rate Of Reaction ◽  
Reaction Proceeds ◽  
Kinetics Of

The kinetics of the iodination of several aminochromes by iodine in aqueous potassium iodide, to form the 7-iodo derivatives, have been studied. The rate of iodination is directly dependent on the concentrations of the aminochrome and iodine and varies inversely with the first power of the iodide ion concentration. The rate of reaction is independent of pH, but the reaction is subject to general base catalysis. A mechanism for the iodination of aminochromes is proposed. The reactive species are molecular iodine and the zwitterionic form of adrenochrome, and the reaction proceeds via a quinonoid intermediate. The rate-controlling process is the removal of the C-7 proton.

Experts Warn Against Taking Potassium Iodide

Ob Gyn News ◽  
2011 ◽  
Vol 46 (4) ◽  
pp. 2
Author(s):  
SHERRY BOSCHERT
Keyword(s):  
Potassium Iodide

Experts Warn Against Taking Potassium Iodide

2011 ◽  
Vol 44 (6) ◽  
pp. 5
Author(s):  
SHERRY BOSCHERT
Keyword(s):  
Potassium Iodide

Reduction of thyroid irradiation from 131-I by potassium iodide

JAMA ◽  
1967 ◽  
Vol 200 (12) ◽  
pp. 1036-1040 ◽  
Author(s):  
M. Blum
Keyword(s):  
Potassium Iodide
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