The synthetic dyestuffs : and the intermediate products from which they are derived (1905)
Cain, John Cannell, 1871-1921, Thorpe, Jocelyn Field, 1872-1940 · London : C. Griffen and Co. · leaf 31
1) By sulphonating an amido-compound. (2) By sulphonating a nitro-compound and subsequent reduction. (3) By nitrating a sulphonic acid and subsequent reduction. The last two methods will be first considered, and as the general operations ofnitration and sulphonation have been already discussed, the… … In carrying out the first method, both a- and /^-naphthylamine are used onthe large scale. SULPHONATION. 13 Table showing the sulphonic acids derived from a-naphthylamine bysulphonation {Heumann):—
Dyes and dyeing
Internet Archive · Getty Research Institute · Public Domain Mark 1.0. Free to use for anything.
