Cain, John Cannell, 1871-1921 · London : Macmillan · leaf 83
rochloric acid are run in, the solution is cooled, and diazotised with 7 kilos, of sodium nitrite. Diazotisa- tion is complete after several hours, when the diazo-solution is run into a solution of 18 kilos, of a-naphthylamine hydrochloride. After twelve hours, the precipitate is filtered off,… … A solution of 30-2 kilos, of acetyl-1 : 4-naphthylenediamine- 6-sulphonic acid is diazotised with 24 kilos, of hydrochloric acid and 7 kilos, of sodium nitrite and mixed with a solution of 14-3 kilos, of a-naphthylamine in 12 kilos, of hydrochloric acid (21° Be.) and 250 litres of water. The…
Dyes and dyeing
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