Reactive Yellow 4

Preparation

3-Aminonaphthalene-1,5-disulfonic acid diazo, and?m-Toluidine coupling,and then??2,4,6-Trichloro-1,3,5-triazine?(1 Moore) condensation.

Properties and Applications

red light yellow. Deep yellow powder, solubility of 40 g/L (50 ℃). Available in low temperature solid color, suitable for cold dye. High reactivity, can be in 20 to 40 ℃ in alkaline medium solid color of the fibers, alkaline hydrolysis, not resistant to acid hydrolysis. Mainly used for cotton, silk, polyamide fiber and viscose, wool fiber dyeing and can be white. Can render cloth dyed ice dye printing.

Standard	Light Fastness	Oxygen bleaching		Persperation Fastness		Soaping
		Fading	Stain	Fading	Stain	Fading	Stain
ISO	6	4-5				5