1 ) Naphtholation (Naphthol is dissolved in water)
2 )Impregnation (Impregnation of fabric with Naphthol )
3 ) Diazotization ( Diazo component is prepared at temp O -
5°C )
4 )Naphtholated fabric is treated with diazo component
solution
5 ) Reaction and color production by coupling
6 ) Removal of excess color from fabric surface by washing
7 ) After treatment