Reactive Blue 74

Preparation

1-Amino-4-bromo-9,10-dioxo-9,10-dihydroanthracene-2-sulfonic acid and 3,5-Diamino-2,4,6-trimethylbenzenesulfonic acidcondensation, and 2,4,6-Trichloro-1,3,5-triazine condensation, then ethoxylated.

Properties and Applications

bright blue. Dark blue powder, the strong sulfuric acid for blue-black, diluted into dark blue; In nitric acid in by the blue to brown, diluted into a tan. Water solution is red light blue, with 1 Moore sodium hydroxide is still bright blue, continue to add insurance powder and warm, turn golden brown; Add a boric acid sodium to buff. 20 ℃ in the solubility of 100 g/L; 50 ℃ when solubility of 140 g/L. Colored light blue, in dye bath of iron ion in slightly turned dark; In light of copper (basically unchanged. The reactive dyes medium, promote sex differences, neutral and alkaline white are poor (1 ~ 2 grade). Suitable for cotton or viscose disseminated, roll the dye, Padding and continuous dyeing dyeing and direct, the dye printing.

Standard(cellulose)	Light Fastness	Oxygen bleaching		Persperation Fastness		Soaping
		Fading	Stain	Fading	Stain	Fading	Stain
ISO	6-7	4-5				4-5