sodium 2-[3-(4-sulfonato-o-tolyliminio)-6-o-toluidino-3H-xanthen-9-yl]benzoate

Preparation

Benzo[b]thiophen-3(2H)-one or?3-Oxo-2,3-dihydrobenzo[b]thiophene-2-carboxylic acid and 1,2-Acenaphthylenedione?or partial reduction of the condensation product.

Properties and Applications

brilliant pink to brilliant yellow red. Big red powder. Slightly soluble in Xylene for yellow red. In concentrated sulfuric acid for brilliant green, dilution after red flocks. Alkaline reduction leuco for red light purple; Acid reduction leuco for orange. Used for cotton, polyester/cotton blended, wool and silk dyeing.

Standard	Ironing Fastness	Chlorine bleach	Light Fastness	Mercerized	Oxygen bleach	Soaping
						Fading	Stain
ISO	4	4	5	4-5	3	1	4-5