HYDROGEN GENERATED BY THE OXIDATION OF ALUMINUM IN A LOW CONCENTRATED AQUEOUS POTASSIUM HYDROXIDE SOLUTION UNDER VIGOROUS STIRRING

2016 ◽  
pp. 95-104 ◽  
Author(s):  
G. N. Ambaryan ◽  
A. O. Dudoladov ◽  
E. A. Meshko ◽  
M. S. Vlaskin ◽  
A. Z. Zhuk ◽  
...  
Keyword(s):  
Potassium Hydroxide ◽  
Potassium Hydroxide Solution ◽  
Hydroxide Solution ◽  
Aqueous Potassium Hydroxide

scholarly journals Morphology and photoluminescence of nanostructured oxides grown by copper passivation in aqueous potassium hydroxide solution

2017 ◽  
Vol 198 ◽  
pp. 89-92 ◽  
Author(s):  
Wojciech J. Stepniowski ◽  
Stevan Stojadinović ◽  
Rastko Vasilić ◽  
Nenad Tadić ◽  
Krzysztof Karczewski ◽  
...  
Keyword(s):  
Potassium Hydroxide ◽  
Potassium Hydroxide Solution ◽  
Hydroxide Solution ◽  
Nanostructured Oxides ◽  
Aqueous Potassium Hydroxide ◽  
Copper Passivation

DIAZOHYDROCARBONS

1950 ◽  
Vol 28b (11) ◽  
pp. 683-688 ◽  
Author(s):  
A. F. McKay ◽  
J. F. Crooker ◽  
W. L. Ott ◽  
G. W. Taylor ◽  
M. N. Buchanan
Keyword(s):  
Potassium Hydroxide ◽  
Potassium Hydroxide Solution ◽  
Hydroxide Solution ◽  
Aqueous Potassium Hydroxide ◽  
Substituted 1

1-Substituted-1-nitroso-3-nitroguanidines on treatment with aqueous potassium hydroxide solution give diazohydrocarbons. This method has been used to prepare diazomethane, diazoethane, diazo-n-propane, diazo-n-butane, diazo-n-pentane, and phenyldiazomethane. Potassium nitrocyanamide has been isolated as a by-product of this reaction.

Kinetics and mechanism of cyclization of N-(2-methoxycarbonylphenyl)-N’-methylsulphonamide to 3-methyl-(1H)-2,1,3-benzothiadiazin-4(3H)-one 2,2-dioxide

1991 ◽  
Vol 56 (8) ◽  
pp. 1701-1710 ◽  
Author(s):  
Jaromír Kaválek ◽  
Vladimír Macháček ◽  
Miloš Sedlák ◽  
Vojeslav Štěrba
Keyword(s):  
Potassium Hydroxide ◽  
Acid Catalysis ◽  
Potassium Hydroxide Solution ◽  
Hydroxide Solution ◽  
General Base ◽  
Rate Limiting Step ◽  
Limiting Step ◽  
Cyclization Kinetics ◽  
Rate Limiting ◽  
Kinetics Of

The cyclization kinetics of N-(2-methylcarbonylphenyl)-N’-methylsulfonamide (IIb) into 3-methyl-(1H)-2,1,3-benzothiadiazin-4(3H)-one 2,2-dioxide (Ib) has been studied in ethanolamine, morpholine, and butylamine buffers and in potassium hydroxide solution. The cyclization is subject to general base and general acid catalysis. The value of the Bronsted coefficient β is about 0.1, which indicates that splitting off of the proton from negatively charged tetrahedral intermediate represents the rate-limiting and thermodynamically favourable step. In the solutions of potassium hydroxide the cyclization of dianion of the starting ester IIb probably becomes the rate-limiting step.

New response to sexual characteristics

2021 ◽  
Vol 20 (9) ◽  
pp. 987-987
Author(s):  
V. G.
Keyword(s):  
Potassium Hydroxide ◽  
Sodium Hydroxide Solution ◽  
Potassium Hydroxide Solution ◽  
Test Tube ◽  
Animal Tissues ◽  
Hydroxide Solution ◽  
Sexual Characteristics ◽  
Small Test ◽  
Small Test Tube ◽  
Color Indicator

Prof. Bernatsky (Doctor. Gaz., 1924, No. 18) describes a new specific reaction to the sexual characteristics of plant and animal tissues. 1/4 of the timing is taken. test tissue, crushed in a mortar, placed in a small test tube ("port-fleur"), 1 cube of site is poured, a mixture of equal parts of 0.582% sodium hydroxide solution and 0.816% potassium hydroxide solution, the mixture is thoroughly mixed with a glass rod, and 1 a drop of a color indicator consisting of 2 hours of alcohol (95-96 ) 1% dalpy solution, 1 hour. one

Reactions of tert-Butyl Peroxy Esters, XIV. Further Observations on the Preparation of Dialkyl tert-Butylperoxy Phosphates

1975 ◽  
Vol 30 (9-10) ◽  
pp. 732-739 ◽  
Author(s):  
G. Sosnovsky ◽  
E. H. Zaret
Keyword(s):  
Potassium Hydroxide ◽  
Potassium Hydroxide Solution ◽  
Sodium Hydride ◽  
High Yield ◽  
Butyl Hydroperoxide ◽  
Tert Butyl ◽  
Tert Butyl Hydroperoxide ◽  
Aqueous Potassium Hydroxide ◽  
Butyl Peroxide

The preparation of dialkyl tert-butylperoxy phosphates (2, R = alkyl) has been achieved by the reaction of the corresponding dialkyl phosphorochloridates (1, R = alkyl) with tert-butyl hydroperoxide either in the presence of pyridine or in the presence of aqueous potassium hydroxide solution. Neither of these routes is suitable for the preparation of dialkyl tert-butylperoxy phosphates in quantity since they yield peroxyphosphates which are contaminated either with the corresponding tetraalkyl pyrophosphates or dialkyl phosphates; the contaminants cannot easily be removed by conventional means from the peroxyphosphates. The method of choice for the preparation in high yield of large quantities of pure dialkyl tert-butylperoxy phosphates involves the interaction of the corresponding dialkyl phosphorochloridate with sodium tert-butyl peroxide which has been prepared in situ from the reaction of tert-butyl hydroperoxide with sodium hydride.

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