Reactive Blue 49

Preparation

1-Amino-4-bromo-9,10-dioxo-9,10-dihydroanthracene-2-sulfonic acid and 3,5-Diamino-2,4,6-trimethylbenzenesulfonic acid?condensation, again with 2,4,6-Trichloro-1,3,5-triazine condensation, and finally 3-Aminobenzenesulfonic acid condensation.

Properties and Applications

red light blue. Blue powder, the strong sulfuric acid for red light blue; In a dilute alkali solution to blue. In 20 ℃ solubility of 200 g/L; 50 ℃ when more than 200 g/L solubility. The dyed fabric for the red light blue light. The reactive dyes low, low affinity, solid color rate is 60%. Neutral and alkaline are not suitable for white.