8-Hydroxyquinoline


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8-hydroxyquinoline

[¦āt hī¦dräk·sē′kwin·ə·lən]
(organic chemistry)
C9H6NOH White crystals or powder that darken on exposure to light, slightly soluble in water, soluble in benzene, melting at 73-75°C; used in preparing fungicides and in the separation of metals by acting as a precipitating agent. Also known as oxine; oxyquinoline; 8-quinolinol.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

8-Hydroxyquinoline

 

(also oxyquinoline, oxine); light yellow crystals with a melting point of 75°–76°C. 8-hydroxy-quinoline has the following structural formula:

Organic solvents, alkalis, and acids are good solvents for 8-hydroxyquinoline, but the compound is only slightly soluble in water. 8-hydroxyquinoline forms crystalline chelates, such as Mg(C9H6ON)2 and Al (C9H6ON)3; these are only slightly soluble in aqueous solutions, including acetic acid and ammonia. The capacity of 8-hydroxyquinoline to form chelates is used to detect and isolate a number of metals, including aluminum, zinc, cadmium, and magnesium. Some 8-hydroxyquinoline derivatives are used as fungicides, for example, the copper salt Cu(C9H6ON)2. Others, for example, Quinosol, Entero-Septol, and Yatren, are used as surface antiseptics or to kill amoebas.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
In addition, 8-hydroxyquinoline has an antifungal activity and has a synergistic reaction with [N.sup.+].
Briitting, "Preparation and characterization of blue-luminescent tris(8-hydroxyquinoline)aluminum ([Alq.sub.3])," Advanced Functional Materials, vol.
In a previous study, we reported that [Alq.sub.3] was formed on APA immersed in an ethanol solution of 8-hydroxyquinoline (HQ) at 60[degrees]C [27].
A controlled laboratory experiment was also conducted where single bud cuttings were forced in 200 mg/L 8-hydroxyquinoline citrate and 2% sucrose at 25[degrees]C under 12-hour days.
Silver nitrate (AgNO3), 8-hydroxyquinoline citrate (8-HQC), sucrose, and citric acid (CA) have been used in vase solutions to extend the longevity of cut Dendrobium Pompadour flowers [6].
Molecules of 8-hydroxyquinoline (8-HQ) are tethered to the outside of the capsules during the microencapsulation process, as shown in Figure 2.
As shown in Scheme 1, the hetarylazo dyes 3(a-f) were prepared through the diazotization of 5-phenyl-1,3,4-thiadiazol-2-amine and coupled with different coupling components such as 8-hydroxyquinoline, 2,6-diamino pyridine, N,N dimethyl aniline, 2-naphthol, resorcinol, and 4,6-dihydroxypyrimidine.
Effects of temperature, 8-hydroxyquinoline sulphate and sucrose on the vase life of cut rose flowers.
Soluble Al(III) in the solutions after culture experiments was determined using the 8-hydroxyquinoline method at pH 8.3, with butyl acetate as the extractant (Li et al.