disodium 2-(4,5-dibromo-6-oxido-3-oxoxanthen-9-yl)benzoate

fluorescent element (C.I.Acid Yellow 73, C.I. 45350) in sodium hydroxide solution 2 brominated, and then, with sodium salting out.

red light orange. Soluble in water for orange, with weak fluorescence, soluble in ethanol for orange, with greenish fluorescence, soluble in acetone for pink, with yellow fluorescence, soluble in chaff and four hydrogen furfuryl alcohol. The strong sulfuric acid for titian, diluted into yellow brown, and orange precipitation. In aqueous solution for countries to join sodium hydroxide red. In glycerin and liquid paraffin in good dispersion.

Standard( Silk )	Light Fastness	Soaping		Persperation Fastness	Oxygen bleaching		Fastness to seawater
		Fading	Stain		Fading	Stain	Fading	Stain
ISO	1	2