Aniline derivatives and their salts:Para chloroaniline, Ortho chloroparanitroaniline, Dichloroaniline, 2,6-dichloro paranitroaniline, 2-4-5-trichloroaniline:Benzyl ethyl aniline, Ethyl aniline, Diethylaniline, Dimethylaniline, Meta nitroaniline, Para nitroaniline:2- amino 3,5 xylne sulphonic acid, Benzyl ethyl aniline sulphuric acid, Metanillic acid (meta amino benzene sulphonic acid), Sulphanillic acid (para aminobenzene sulphonic acid para aniline sulphonic acid), Ethyl hydroxy ethylaniline, Methyl dopa (1-alpha met hyl-3, 4dihydroxyphenylaniline):Methyl dopa (1-alpha methyl-3, 4dihydroxyphenylaniline).