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.

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 It might be outdated or ideologically biased.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.

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References in periodicals archive

In addition, 8-hydroxyquinoline has an antifungal activity and has a synergistic reaction with [N.sup.+].

Synthesis, Characterization, and Anti-Phytopathogen Evaluation of 6-Oxychitosan Derivatives Containing N-Quaternized Moieties in Its Backbone

Briitting, "Preparation and characterization of blue-luminescent tris(8-hydroxyquinoline)aluminum ([Alq.sub.3])," Advanced Functional Materials, vol.

A Simple Incorporation Route of Tris(8-hydroxyquinoline)aluminum(III) into Transparent Mesoporous Silica Films and Their Photofunctions

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.

Grapevine mysteries revealed: research probes grape breeding, cold hardiness and canopy management

Pre-concentration of trace elements from seawater with silica immobilized 8-hydroxyquinoline. Analytical Chemistry, v.

Preparation of a chitosan-based anionic exchanger for removal of bromide, chloride, iodide and phosphate ions from aqueous solutions/Preparo de um trocador anionico a base de quitosana para remocao de ions brometo, cloreto, iodeto e fosfato de solucoes aquosas

Synthesis of 8-hydroxyquinoline derivatives as novel anti-tumor agents.

Anti-tumour and pharmacokinetics study of 2-Formyl-8-hydroxy-quinolinium chloride as Galipea longiflora alkaloid analogue

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].

Antimicrobial compounds from leaf extracts of Jatropha curcas, Psidium guajava, and Andrographis paniculata

Molecules of 8-hydroxyquinoline (8-HQ) are tethered to the outside of the capsules during the microencapsulation process, as shown in Figure 2.

Battelle acts on corrosion detection and prevention

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.

Synthesis, characterization, and biological activity of 5-phenyl-1,3,4-thiadiazole-2-amine incorporated azo dye derivatives

Effects of temperature, 8-hydroxyquinoline sulphate and sucrose on the vase life of cut rose flowers.

Quality of cut roses treated with natural products/Qualidade de rosas de corte tratadas com produtos naturais

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.

Proton release from tea plant (Camellia sinensis L.) roots induced by Al(III) under hydroponic conditions