Preparation of stabilized and concentrated K-type liquid reactive dyes

Aiming at the existing problems of powdery dyes on dust pollution and high inorganic salt content,the article has researched the preparation of liquid reactive dyes. Using Reactive Yellow K-6G as the object of research,the content of inorganic salts was reduced through the purification of commodity dyes,the stable pH range of the liquid dye was measured,the stability of the liquid dye was enhanced by selected buffer solution,and the concentration was improved by selected organic solvent. The results showed that the stable pH range of liquid Reactive Yellow K-6G is 6-7. 5,Tris + EDTA-2Na is selected as buffer solution with a mass fraction around 5%,n-butyl alcohol,isopropanol,and N,N-dimethyl formamide may be chosen as organic solvent with a mass fraction of 10%. And by such good results will be achieved.