Two methods for better coloring of Rhodamine b dye in industry

Rhodamine b dye CAS 81-88-9 is one of the indispensable materials in the industry, and its application effect is remarkable. How to make rhodamine b dye better coloring? Let’s take a look at the specific methods.

1. Cellulose in neutral or weakly alkaline dyeing bath will carry the surface potential, and can have specific mutual charge repulsion with basic dye anions. After participating in salt electrolyte solution, a large number of positively charged sodium ions and dye anions have corresponding relations. Adhering to charge neutrality can effectively reduce the difficulty of dyeing process and promote the outside of fiber The surface is in close contact with dye molecules.

2. It is not allowed to dye too fast in the process of adsorption. basic violet 10 participates in the electrolyte during the adsorption, which will cause the dye to gather and cause uneven dyeing. If the electrolyte participates in the process, the above situation can be prevented.

Supplementary information:

Also known as rhodamine B, basic rhodamine b extra, is a bright peach red synthetic dye. It has strong fluorescence in the solution and can be used as cell fluorescent dye, colored glass, special fireworks and firecrackers in the laboratory. It was used as a food additive before, but it was proved to be carcinogenic after experiments. Now it is not allowed to be used as food dyeing.


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Post time: Sep-11-2020