beta-naphthylamine

[ bey-tuh-naf-thuh-luh-meen, -nap-or, especially British, bee- ]

noun

, Chemistry.

1. a white to reddish, crystalline, water-soluble, extremely toxic solid, C 10 H 9 N, used chiefly in the manufacture of azo dyes.

Word History and Origins

Origin of beta-naphthylamine¹

beta + naphthyl + amine

Example Sentences

Among them: > The Labor Department's 1973 declaration of zero tolerance levels in industry for ten widely used chemicals, including benzidine and beta-naphthylamine.

From Time Magazine Archive

As far as we know, and we have checked with all of the important technical experts in the lipstick field, beta-naphthylamine is not used in lipstick at all.

From Time Magazine Archive

The process by which beta-naphthylamine is prepared from beta-naphthol, already referred to, viz. by heating with ammonia under pressure, has been extended to the sulpho-acids of beta-naphthol, and by this means new beta-naphthylamine sulpho-acids have been prepared, and figure largely in the production of these secondary azo-colours.

From Project Gutenberg

Similarly there are two amidonaphthalenes, known as alpha- and beta-naphthylamine respectively.

From Project Gutenberg

Beta-naphthylamine, 182, 185, 187, 188. —— red, 196.

From Project Gutenberg