The present invention provides a method for producing 伪-hydroxyisobutyric acid amide by hydration of acetone cyanohydrin under the presence of a catalyst composed mainly of manganese oxide using a reactor in which at least two reaction regions are connected in series, the method being characterized ...
α-Hydroxy isobutyric acid is used as the complexing agent for preconcentration as well as separation of U from other interfering metal ions (Mo, V, Ti, Ni etc.). A C<sub>18</sub> reversed-phase monolithic column and α-HIBA of pH 6–7 are employed for the selective preconcentration ...
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1,2-Dihydro-3H -1,2,4-triazol-3-one 930-33-6 2-Hydroxyisobutyric Acid 594-61-6 2-Acetoxyisobutyryl Bromide 40635-67-4 3-Amino-5-methylpyrazole 31230-17-8 Acetoxyacetyl chloride 13831-31-7 2-acetoxyisobutyryl chloride 40635-66-3 Ethyl 3-aminocrotonate 626-34-6 Methyl 3-ami...
A high-performance liquid chromatographic (HPLC) method is developed for the determination of uranium (U), present at ppb levels, in seawater. α-Hydroxy isobutyric acid is used as the complexing agent for preconcentration as well as separation of U from other interfering metal ions (Mo, V, ...
PRODUCTION OF ALPHA-HYDROXYISOBUTYRIC ACID AMIDEPURPOSE: To provide the method for producing the α-hydroxyisobutyric acid amide, capable of remarkably improving the catalystic life of manganese dioxide and profitably producing the cc-hydroxyisobutyric acid amide.FUKADA ISAO...
Decomposition of α-hydroxyisobutyric acid in a nitric acid medium ☆doi:10.1016/0031-6458(70)90006-7Elsevier B.V.Petroleum Chemistry U.s.s.r
伪-Hydroxy isobutyric acid is used as the complexing agent for preconcentration as well as separation of U from other interfering metal ions (Mo, V, Ti, Ni etc.). A C18reversed-phase monolithic column and 伪-HIBA of pH 6-7 are employed for the selective preconcentration of U. Mobile ...
PURPOSE: To carry out the continuous production of the subject compound with industrial advantage, because of largely prolonged catalyst life, by allowing benzoic acid to coexist in the hydration reaction of acetone cyanohydrin in the presence of manganese dioxide catalyst.KARASAWA MINAHITO...
In addition to a -hydroxyisobutyric acid the oxidation yields a -nitratoisobutyric acid, a -nitratoisobutyraldehyde, a -hydroxyisobutyraldehyde and a -(a -hydroxyisobutyroxy)-isobutyric acid which may be converted to further a -hydroxyisobutyric acid by further oxidation and/or hydrolysis. ...