A Study on Tri-Component Mixed Salt Used as Accelerants of Reactive Dyestuffs

Three kinds of salts were selected and mixed in a cretain molar ratio based on their sodium ion.Then,they were used as accelerants of the Reactive Yellow KE-4R to dye cotton.The dyeing results showed that the fixation was 78.7% while sodium sulfate,sodium chloride and sodium citrate mixed in the molar ratio of 2∶1∶3.However,the fixation was 69.5% while the sodium ion molar concentration of sodium citrate sloution was 1/3 higher than that of the mixed salt.In addition,the fixation of mixed salt of sodium sulfate,sodium citrate and soduim acetate trihydrate in the molar ratio of 2∶3∶1 was equal to the fixation of the sodium citrate solution with the sodium ion molar concentration 1/3 higher than that of the mixed salt.The mixed salt of sodium chloride,sodium citrate and sodium acetate trihydrate possessed good accelerating effect also.The amount of the organic salt and the inorganic salt could be decreased and got the target of economy and environment-protection by mixing salt.