diazonium salt

American  

noun

Chemistry.

1. any of a group of salts of the general formula ArN 2 X, in which Ar represents an aryl group and X an anion, as benzenediazonium chloride, C 6 H 5 N(N)Cl, many of which are important intermediates in the manufacture of azo dyes.

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diazonium salt British  

noun

1. any of a class of compounds with the general formula ArN:N ^– M ⁺ , where Ar is an aryl group and M is a metal atom; made by the action of nitrous acid on aromatic amines and used in dyeing

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Etymology

Origin of diazonium salt

First recorded in 1905–10

Example Sentences

To the solution of the diazonium salt are now added 848 g. of dimethylaniline; this may be done rapidly, as the temperature does not rise appreciably.

From Organic Syntheses by Conant, James Bryant

Approximately 500 g. of cracked ice are added, and then, with mechanical stirring, the diazonium salt solution is run in as rapidly as possible.

From Organic Syntheses by Conant, James Bryant

The rapid addition of the diazonium salt solution to the sodium sulfite seems to be advantageous.

From Organic Syntheses by Conant, James Bryant

Oxyazo Compounds.—The oxyazo compounds are prepared by adding a solution of a diazonium salt to a cold slightly alkaline solution of a phenol.

From Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 1 "Austria, Lower" to "Bacon" by Various

Replacement of -NH2 by -OH:—The amine is diazotized and the aqueous solution of the diazonium salt is heated, nitrogen being eliminated and a phenol formed.

From Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4 "Diameter" to "Dinarchus" by Various