Desorption of Hydrolysed Reactive Dyes from Wool

The desorption of the hydrolysed forms of nine reactive dyes from wool has been examined in soap solution (ISO 2 test) and in urea-surfactant solution. It was found that the desorption of the hydrolysed dyes was slower in soap solution than in the urea-surfactant solution. After the standard 45 min of the ISO 2 washing test equilibrium was not reached, while after 60 min in urea-surfactant solution equilibrium desorption was reached with most of the hydrolysed dyes