in 200 parts of h 2 o and 6 25 parts by volume of concentrated hcl 36 the amine in solution was diazotized according to conventional procedures at 0 u00b0 5 u00b0 c by dropping a solution of 1 73 parts of nano 2 in 30 parts of h 2 o into the solution the resulting diazonium salt solution was poured at 0 u00b0 5 u00b0 c into a solution made up of 4 5 parts of 4 hydroxy 3 methyl phenyl propionic acid in 150 parts of h 2 o and 6 0 parts by volume of a 40 naoh solution containing 1 7 parts of na 2 co 3 on completion of the reaction hcl d 1 16 was added thereto until the ph value reached 3 5 after which it was filtered and washed with h 2 o the dye which was obtained in the form of a yellow powder having the structure str3 dyes polyamide fibers yellow the levelling power of the dye being good and the general fastness excellent by operating substantially in accordance with the same procedures as are described in example 1 the dyes reported in the following table were prepared table__________________________________________________________________________ dyeing shade onexamplediazo component coupling compound nylon__________________________________________________________________________ str4 str5 yellow4 str6 str7 yellow5 str8 str9 yellow6 str10 str11 yellow7 str12 str13 yellow8 str14 str15 yellow__________________________________________________________________________ 0 5 part of the dye obtained in example 1 was suitably microground in a ball mill and accurately dispersed in water the.