8-Hydroxyquinoline is a chelating agent which has been used for the quantitative determination of metal ions. In aqueous solution 8-hydroxyquinoline has a pKₐ value of ca. 9.9 It reacts with metal ions, losing the proton and forming 8-hydroxyquinolinato-chelate complexes.

What is hydroxyquinoline used for?

Hydroxyquinoline is used to lubricate and deodorize the vagina, and to prevent the growth of bacteria. Hydroxyquinoline is often used in women who wear a vaginal pessary (a device inserted into the vagina to support pelvic organs in women with prolapsed uterus or other pelvic problems).

What is hydroxy quinoline sulfate?

Hydroxyquinoline sulfate is the active ingredient in a salve primarily used to treat cow's udders that have been cut, scraped, chapped or wind burned. The salve soothes the skin by absorbing water on the area you have applied the salve. ... When it is working, you notice that the udder softens and milk flows freely.