Edit page | Page history | Printable version

Ilosvay reagent

Sulfanilic acid 0.5, dissolved in dilute acetic acid 150, mixed with naphthylamine 1, and dissolved in boiling water 20; the blue sediment which forms is dissolved in dilute acetic acid 150; a few drops of this reagent added to water, saliva, or other fluid to be tested will produce a red colour if nitrites are present.