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the world > matter > chemistry > chemical tests > [noun] > reagents > other (6)
Millon's reagent1872

a clear solution of mercuric nitrate containing some nitrous acid, used in the Millon test.

orcinol1880

A colourless crystalline phenol which is obtained from orchil and other lichens, turns red on exposure to air, and is used as a reagent for pentose…

rubeanic acid1891

an orange-red crystalline solid formed by reaction of cyanogen and hydrogen sulphide, and used in analysis as a reagent to detect copper.

tetrazolium1895

(a) The ion or radical N4CH3 (+) derived from tetrazole. (b) Any of various derivatives of this, esp. triphenyl tetrazolium chloride, a reagent used…

Schiff reagent1897

Used attributively and in the possessive to designate things Schiff devised or investigated. an acid solution of fuchsin (magenta, rosaniline)…

Tollens'(s) reagent1904

Tollens'(s) reagent: a solution of ammoniacal silver nitrate and sodium hydroxide, used as a test for aldehydes with which it reacts to give a…

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