Vim tias tus nqi nce ntawm cov khoom siv raw aniline, cov nqi ntawm Solvent Black 5 thiab Solvent Black 7 tau nce ntau, thiab cov khoom ntawm lawv tau nruj.
Tsis tas li ntawd, tus nqi ntawm raw khoom H acid sawv.Yog li ntawd, tus nqi ntawm Disperse Black EXSF thiab Disperse Black ECO tau nce me ntsis los ntawm ib nrab ib hlis dhau los.