Al-Zagoum, M. N.; Warren, C. G. published the article 《Acid reaction and ionization constants of 8-hydroxyquinoline-N-oxide》. Keywords: oxine N oxide property; acid property oxine N oxide; hydroxyquinoline N oxide; dissociation oxine N oxide.They researched the compound: 8-Hydroxyquinoline 1-oxide( cas:1127-45-3 ).Recommanded Product: 1127-45-3. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:1127-45-3) here.
The constants for the acid reactions of 8-hydroxyquinoline-N-oxide were determined at 25° and M ionic strength. The 1st ionization constant for the cation of oxine-N-oxide, H2Q+, was 0.0486 ± 0.0004. The constant for the acid reaction for the 2nd ionization of the above compound was 176 kw ± 15, where kw is the ion product of water. This constant is for the ionization of oxine-N-oxide which produces H ions and a combination of basic forms including the anion and the Na salt. The 1st ionization constant was determined by potentiometric measurements. The 2nd ionization was studied by solvent extraction methods. The reagent was synthesized by a modified K. Ramaiah and V. R. Srinivasan (1962) procedure.
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Reference:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider