DIRECT PURE YELLOW 5G

Uses

Direct Yellow 8 is an organic dye used with textiles, such as polyurethane fibers and cotton-?polyurethane blends.

Preparation

2-(4-Aminophenyl)-6-methylbenzo[d]thiazole-7-sulfonic acid diazo, and 3-Oxo-N-phenylbutanamide coupling

Properties and Applications

colourful green light yellow. Soluble in water for yellow, soluble in soluble fiber element, slightly soluble in alcohol, almost insoluble in other organic solvents. For the strong sulfuric acid in bright yellow, yellow after diluted precipitation; In nitric acid solution for bright yellow; In strong hydrochloric acid partly dissolved, for orange. Apply to wool, polyamide fiber, silk dyeing and printing, also used in leather color.

Standard	Light Fastness	Soaping		Persperation Fastness	Oxygen bleaching		Fastness to seawater
		Fading	Stain		Fading	Stain	Fading	Stain
ISO	3	4		4	5		4