3. Metanitroaniline, Fiery yellowish red; Brownish orange.
4. Paranitroaniline, Bright scarlet; " "
Base. With beta-naphthol, gives With alpha-naphthol, gives
5. Nitroparatoluidine, Orange; Very bright catechu.
6. Alpha-naphthylamine, Bluish claret red; Reddish puce.
7. Beta-naphthylamine, Turkey red; "
8. Amidoazobenzene, Red; "
9. Orthoamidoazotoluene, Yellowish claret red; "
By mixing alpha-and beta-naphthols together a variety of grenat and claret reds and browns can be obtained.
With regard to the fastness of the shades produced the following may be considered:—
Fast to Soaping.
Combination of A-Naphthol with Toluidine.
" " A-Naphthylamine.
" " B-Naphthylamine.
" " Amidoazobenzene.